Retaining Clips for Office Furniture Partition

The invention relates to an upright partition, for use in a modular office furniture system, having an open internal frame inward of removable cladding panels within which cables, wires and electrical power conduits may be enclosed.

The use of modular office furniture systems is currently very wide spread in modern office interior design. The advantages of using partitions in a modular office system include increased efficiency in the use of space and individual offices with permanent walls may be largely eliminated in open office designs. As a result, a tenant of leased commercial space may minimize the cost of leasehold improvements, and may occupy and vacate premises rapidly through assembly and disassembly of modular components.

Conventionally a partition comprises an interior hollow rectangular frame constructed of roll formed sheet metal channel sections welded together in a rigid assembly. Electrical wiring and communication cables are accommodated in the hollow interior of the partitions, and are passed between partitions through holes punched in the webs of frame members. Partitions are connected together at their vertical end frame members into various geometric office maze patterns and cladding panels are hung on the frames to enclose and conceal the supporting frames and wiring.

Commonly the vertical frame members have a series of longitudinally spaced slots within which dogs extending from the cladding panels are engaged. In a like manner shelves, desktop brackets, filing cabinets and other components of the modular office furniture system are hung on the partitions to complete the modular furniture assembly.

The fabrication of conventional partition frames often involves several operations which require special tooling and machine setups. For example, where frame members are constructed of formed sheet metal channels, openings for wiring, notches for connections to other frame members and slots for hanging accessories are punched in a flat sheet metal blank. The blank is then bent into a channel shape in a rollforming operation, or on a brake press. The formed channels are then fitted together in a jig and welded at rigid connections.

It will be apparent that where different sized frame members are used and where the configuration of members vary, numerous machine setup modifications must be made. Production may involve the preparation of a number of different frame member configurations each of which may require separate inventory, machine setups, production scheduling and drawings. Therefore it is desirable to simplify the design of frame members as much as possible to minimize production costs, inventory requirements, and provide maximum flexibility in manufacturing scheduling.

It is also desirable to minimize the use of welding as a means for connecting frame components. The heat from welding can distort metal frames, and a further manufacturing step may be required to straighten metal frames which have become twisted, or cambered through the welding process. In addition, welding thin sheet metal frames may require relatively highly skilled workers, and quality control supervision.

A welded metal frame is for all practical purposes, impossible to modify after fabrication. An improperly fabricated welded metal frame must be scrapped and very little of the material can be salvaged for reuse. If a purchaser of a partition system wishes to modify the furniture layout, whole partitions cannot be modified easily. Therefore modification plans are restricted to the rearrangement of existing partitions, or purchasing new partitions of different dimensions.

Despite the above disadvantages however, welded metal partition frames remain the most commonly used type since the strength is high and manufacturing cost is low compared to conventional alternatives.

A significant recent development in partition design relates to the increasing demands being put on office furniture to accommodate various communication devices such as computers, telephones, facsimile machines, printers and the like.

In order to accommodate the increasing number of electrical and communication wires required in most modern office environments, wire or cable raceways through the hollow interior of partitions have been provided. The common conventional location for such a raceway is at the base or cap of a partition.

The individual conventional partitions each have a raceway or several raceways which communicate with each other when assembled in a modular partition wall. The raceway also commonly communicates with the electrical system of the occupied building through vertical power poles which extend up through the drop ceiling of the building office space or through monuments and access openings in the floor of the office space.

U.S. Pat. No. 4,133,153 to Hage describes a typical conventional partition raceway. The base portion of the Hage partition is essentially a hollow accessible beam within which electrical and communication wiring can be placed. The conventional partition frame is connected to the top of the hollow beam forming the cable raceway.

U.S. Pat. No. 5,038,539 to Kelly et al describes another example of a partition system which may accommodate cables at the base and at the cap of a conventional partition system. The vertical frame members are not modified in such a system but rather the cables are passed over the vertical frame members around their outward edges. This type of system may accommodate limited numbers of relatively thin cables retaining them within the space occupied by the cladding panels.

An alternative conventional method of passing wires between frames is described in U.S. Pat. No. 4,535,577 to Tenser et al. In this conventional system openings are made in the web section of vertical frame members. The electrical and communication wiring are threaded through the web openings. Therefore wires are not visible but are entirely concealed by the cladding panels. An advantage of this system is that the outward edges of vertical frame members remain completely clear. Accordingly the attachment of other components of modular office furniture systems is not impeded by cables overlapping the openings upon which shelves and other components are hung.

A distinct disadvantage of such a system is the need to thread cables through the openings. When installing, moving or maintaining computers or other office equipment, it may become frequently necessary to install and remove the cables. Increased labour costs and wear on the cables results from such a system. However since the web portion of the frame member contributes minimally to the strength of the frame member, providing such openings does not reduce the strength of the frame significantly.

Since most office equipment is operated on the top of a desk or table, current partition designs often include what is known as a "waist-line" waist height cable raceway. Electrical receptacles and various wires are accommodated at waist height thereby eliminating wires which hang down from table top to "base-line" receptacles located at the bottom of a partition. Use of a waist-line raceways simplifies installation and maintenance of equipment by eliminating the need for the installer to crawl under furniture to access a base-line cable raceway and electrical receptacles. The use of a waist height raceway also generally reduces the length of cables required between devices all located at a table top elevation.

An open interior partition system is sold under the trade mark OPTIMA by Design Finish Studio of Israel. This conventional partition is constructed of vertical sheet metal channel posts with pairs of horizontal round tubes. The pairs of horizontal tubes at each of their ends are inserted into specially designed molded plastic end connectors. The plastic connectors are snap-locked into the interior throat of the vertical channel posts to complete a rigid connection. The partition accommodates wires and cables within its interior by threading wires etc between the pairs of tubes and through openings punched in the webs of the vertical post channels.

This type of partition remains at a disadvantage since special molded connectors must be used, and the wires must be threaded between partitions through openings in the web of the posts.

Threading of wires through openings increases the time and effort required to install, remove and maintain office equipment, and increases wear on the outer insulated surfaces of the wiring, thereby reducing its service life.

However in such a conventional partition, since the entire internal space is open, between pairs of horizontal tubes, wires and cables may be accommodated at any level within an individual partition in the interior behind removable panels. Additionally, the panels are coupled to the horizontal beams with resilient tabs, rendering the entire internal cavity easily accessible through removable panels.

Therefore it is desirable to provide a partition which may easily accommodate electrical and communication cables preferably at any height in a manner which simplifies the installation, removal and maintenance of such equipment.

Also it is desirable to protect and conceal wiring and receptacles as much as possible behind cladding panels while maintaining the structural integrity of the partition frame.

The simplification of frame construction may result in significant cost savings in respect of the type of fabrication machinery used in manufacturing, savings in inventory costs, and enhancement of production scheduling.

The invention addresses the disadvantages of the prior art in a novel manner through the provision of an upright partition for use in a modular office furniture system.

The partition of the invention has a frame which is open within its interior providing clearance for wires and cables enclosed between cladding panels on the frames exterior. The frame is simply constructed of vertical posts and horizontal beams connected together at rigid overlapping joints. Saddle brackets are used to secure rounded tubular beams to square tubular posts with screws or rivets. The overlapping of beams on the posts provides a rigid connection and also defines a wire accommodating raceway between adjacent partitions. The raceway is defined outward of the outward post faces inward of the cladding panels and preferably at least to the beam outer faces.

Therefore, it will be apparent that by simply cutting posts and beams to length, and connecting them with such brackets and screws, a partition frame may be quickly fabricated. Preferably the partitions are assembled in a factory environment and shipped to the customer. If desired however, the partitions may be shipped to the site in compact bundles reducing the bulk and cost of transportation. The partitions then may be assembled and erected at their final location. The ability to disassemble and reassemble the partition frames also aids the purchaser in moving the partitions to new premises and adds flexibility in redesigning their office layout.

Preferably, the beams are paired together at spaced apart elevations with the post located between beams of the pair. Therefore, the wires may pass between paired beams within the interior of the partition and may be passed over the outward surface of the posts between adjacent partitions. The cladding panels are coupled to the beams with resilient clips such that all panels are easily removable to provide access to the interior of the partition. Wires may pass between adjacent partitions over the outward face of the posts and enclosed inward of the panels. The overlapping of the beams spaces the panels away from the posts thereby providing an adequately sized cable raceway bounded by the beams outwardly and at top and bottom, and bounded inwardly by the adjacent post.

Accordingly the invention specifically provides: an upright partition for use in a modular office furniture system, the partition comprising: a frame comprising: two vertical posts each having outward opposing faces defining spaced apart parallel forward and rearward planes; a plurality of horizontal beams, at least one beam in each said plane, each beam having an inward face and an outward face, the inward face of each beam being connected to one said outward face of an associated post in an overlapping moment resisting connection; and a plurality of cladding panels each connected to one said beam; whereby an internal cavity is defined inward of the outward faces of said beams, and a raceway is defined outward of said outward post faces and inward of the outward faces of said beams.

In another aspect, the present invention provides, in a modular office furniture system comprising a plurality of rectangular, upright partitions, a securing assembly for securing together two partitions end-to-end in a straight line; the partitions each having a rectangular frame having two vertical, rectangular end posts, each end post having an end face and an opposing inner face, the end face defining an end surface of a partition; each end post having a first aperture in its end face and a second aperture in its inner face, the first and second apertures being in vertical alignment with each other and being horizontally centered on each end post; the securing assembly securing together two end posts of adjacent partitions with the end faces of the two end posts abutting, the apertures in the two end posts being in alignment to define a horizontal guideway through the two end posts; said securing assembly comprising: an elongated fastener element having two cylindrical threaded ends and an enlarged intermediate portion therebetween, the fastener element being inserted into the guideway with its enlarged intermediate portion received against rotation in the first apertures in the end faces of the two posts; and two sleeve nut means threaded onto the threaded ends of the fastener element, each sleeve nut means comprising a head and a circular sleeve, the sleeve of each sleeve nut means being rotatably received in the second aperture in the inner face of one of the two end posts, the head of each sleeve nut means abutting the inner face of one of the two end posts.

Preferably, the enlarged intermediate portion of the fastener element and the first apertures in the end faces of the two end posts have a regular, polygonal shape and the intermediate portion is closely received against rotation in the first apertures of the two end posts. More preferably the second apertures are of the same size and polygonal shape as the first apertures, the preferred shape being square.

Preferably, the securing assembly of claim 1, wherein the elongated fastener element has conical portions between its enlarged intermediate portion and the two cylindrical ends for ease of insertion of the fastener element into the apertures.

In yet another aspect, the present invention provides, in a modular office furniture system comprising a plurality of rectangular, upright partitions, a connecting system for securing together two partitions at a preselected angle to each other, the preferred angle being 90.degree.; the partitions each having a rectangular frame having two vertical, rectangular end posts, each end post having an end face and an opposing inner face, the end face defining an end surface of a partition; each end post having a first aperture in its end face and a second aperture in its inner face, the first and second apertures being in vertical alignment with each other and being horizontally centered on each end post; the connecting system securing together two end posts of adjacent partitions, the end faces of the two ends posts being at the preselected angle to each another; the connecting system comprising: a modular connecting bracket having two vertical end flanges and a horizontal bight therebetween, each end flange having a hole and being secured to the end face of one of the two end posts with its hole in substantial vertical and horizontal alignment with the first and second apertures of one of the two end posts to form a guideway through the flange and the apertures, the bight extending between the flanges and extending forwardly from the end faces of the two end posts; and a bolt inserted into each guideway and securing the flanges to the end faces of the end posts, the bolt being retained by a nut.

In a preferred embodiment, the bolt means comprises a head, a lower threaded portion and an enlarged intermediate portion therebetween, the head abutting one flange of the connecting bracket, the intermediate portion received against rotation in the flange hole and the first aperture in the end face; and the nut comprises a sleeve nut threaded onto the threaded end of each bolt, each sleeve nut comprising a head and a circular sleeve, the sleeve of each sleeve nut being rotatably received in the second aperture in the inner face of one of the two end posts, the head of each sleeve nut means abutting the inner face of one of the two end posts.

Preferably, the enlarged intermediate portion of each bolt and the first apertures in the end faces of the two end posts have a regular, polygonal shape, and more preferably the second apertures are of the same size and polygonal shape as the first apertures, the preferred shape being square. It is also preferred that the bolt additionally comprises a conical portion between the lower threaded portion and the enlarged intermediate portion to ease insertion of the bolt through the post apertures and the flange hole.

In yet another aspect, the present invention provides, in a modular office furniture system comprising a plurality of rectangular, upright partitions, a system for securing together three partitions at a preselected angle of 90.degree.; the partitions each having a rectangular frame having two vertical, rectangular end posts, each end post having an end face and an opposing inner face, the end face defining an end surface of a partition; the system comprising: a connecting system as described above securing together an end post of a first partition and an end post of a second partition with a first modular connecting bracket, the end faces of the end posts being at 90 degrees to each other; and a connecting system as described above securing together an end post of the second partition and an end post of a third partition with a second modular connecting bracket, the end faces of the end posts being at 90 degrees to each other; one vertical flange of the first connecting bracket and one vertical flange of the second connecting bracket being secured to the end face of one end post of the second partition by one bolt; the first and second modular connecting brackets being identical to each other.

In yet another aspect, the present invention provides, in a modular office furniture system comprising a plurality of rectangular, upright partitions, a system for providing a decorative end covering on a partition; the partition having a rectangular frame comprising two vertical end posts and a plurality of horizontal beams arranged in pairs, each beam extending between and connected to the two end posts and having hollow, open ends proximate the end posts, the beams of each pair being connected to opposite sides of the end posts, the partition having at least two pairs of beams, one pair proximate its bottom and one pair proximate its top; the system comprising: at least two cover plate supports provided on an end of the partition, each cover plate support having an end plug inserted into the open ends of one pair of beams and securing the cover plate support to the partition, each cover plate support extending outwardly from the ends of a pair of beams and having upper and lower surfaces provided with upper and lower cover plate connectors, respectively; and at least one cover plate providing a decorative appearance to an end of the partition, each cover plate extending vertically between two cover plate supports, the cover plate having an upper end secured to the lower cover plate connector of a first cover plate support and a lower end secured to the upper cover plate connector of a second cover plate support.

In yet another aspect, the present invention provides, in a modular office furniture system comprising a plurality of rectangular, upright partitions, a system for providing a decorative end covering on the converging ends of two partitions; the ends of the partitions converging at a preselected angle of 90 degrees; the partitions each having a rectangular frame comprising two vertical end posts and a plurality of horizontal beams arranged in pairs, each beam extending between and connected to the two end posts and having hollow, open ends proximate the end posts, the beams of each pair being connected to opposite sides of the end posts, each partition having at least two pairs of beams, one pair proximate its bottom and one pair proximate its top; a first partition of the two partitions having two pairs of beams in vertical alignment with respective pairs of beams of a second partition; the system comprising: at least two triangular cover plate supports, each extending horizontally between, and secured to, the converging ends of the partitions, each cover plate support having a first end plug inserted into the open ends of a pair of beams of the first partition and extending horizontally outwardly therefrom, and having a second end plug inserted into the open ends of a vertically aligned pair of beams of the second partition and extending horizontally outwardly therefrom, each cover plate support having upper and lower surfaces provided with upper and lower cover plate connectors, respectively; and at least one cover plate providing a decorative appearance to the converging ends of the two partitions, each cover plate extending vertically between two triangular cover plate supports, the cover plate means having an upper end secured to the lower cover plate connectors of a first triangular cover plate support and a lower end secured to the upper cover plate connector of a second triangular cover plate support.

In yet another aspect, the present invention provides in a modular office furniture system comprising a plurality of rectangular, upright partitions, a system for providing a decorative end covering on the converging ends of three partitions; the ends of adjacent partitions converging at a preselected angle of 90 degrees; the partitions each having a rectangular frame comprising two vertical end posts and a plurality of horizontal beams arranged in pairs, each beam extending between and connected to the two end posts and having hollow, open ends proximate the end posts, the beams of each pair being connected to opposite sides of the end posts, each partition having at least two pairs of beams, one pair proximate its bottom and one pair proximate its top; each partition of the three partitions having two pairs of beams in vertical alignment with respective pairs of beams of each other partition of the three partitions; the system comprising: at least two rectangular cover plate supports, each extending horizontally between, and secured to, the converging ends of the partitions, each cover plate support having an end plug inserted into the open ends of a vertically aligned pair of beams of each of the three partitions, each cover plate support having upper and lower surfaces provided with upper and lower cover plate connectors, respectively; and at least one cover plate providing a decorative appearance to the converging ends of the three partitions, each cover plate extending vertically between two rectangular cover plate supports, the cover plate having an upper end secured to the lower cover plate connector of a first rectangular cover plate support and a lower end secured to the upper cover plate connector of a second rectangular cover plate support.

In yet another aspect, the present invention provides, in a modular office furniture system comprising a plurality of rectangular, upright partitions, a system for providing a decorative covering over a gap between converging ends of four converging partitions; the converging ends of adjacent partitions converging at a preselected angle of 90 degrees; the partitions each having a rectangular frame comprising two vertical end posts and a plurality of horizontal beams arranged in pairs, each beam extending between and connected to the two end posts and having hollow, open ends proximate the end posts, each partition having at least two pairs of beams, one pair proximate its bottom and one pair proximate its top; a first partition having one pair of beams in vertical alignment with a pair of beams of each other partition, the vertically aligned pair of beams of the first partition being proximate the top of the first partition; the system comprising: a rectangular horizontal cover plate extending between, and secured to, the converging end of each partition, the cover plate having an end plug inserted into the open ends of a vertically aligned pair of beams of each partition and an upper decorative surface.

In yet another aspect, the present invention provides an upright partition for use in a modular office furniture system, the partition comprising: a frame comprising: two vertical end posts and a plurality of horizontal beams arranged in pairs, each beam extending between and connected to the two end posts and having hollow, open ends proximate the end posts, the beams of each pair being connected to opposite sides of the end posts, the partition having at least two pairs of beams, including an uppermost pair of beams proximate an upper end of the partition; a pair of cladding panels forming a decorative outer covering over at least the upper portion of the partition, each cladding panel extending vertically between a beam of the uppermost pair and a beam of another pair of beams along one side of the end posts, each cladding panel being secured at its top to a beam of the uppermost pair.

In yet another aspect, the present invention provides, in a modular office furniture system comprising a plurality of rectangular, upright partitions, a system for attaching cladding panels to a frame of a partition; the partition having a rectangular frame comprising two vertical end posts, a plurality ,of horizontal beams arranged in pairs, each beam having inward and outward faces and extending between and connected to the two end posts, the beams of each pair being connected to opposite sides of the end posts, and a plurality of cladding panels extending vertically between pairs of beams and forming a decorative covering of the partition; the system comprising: a plurality of modular panel retaining clips securing the cladding panels to the partition, each panel clip secured between a pair of beams and having side surfaces received in a tight friction fit against the inward faces of the pair of beams, each panel clip having at least one panel securing means to which a cladding panel is releasably secured.

Further aspects of the invention will become apparent upon review of the following detailed description of the preferred embodiment of the invention.

In order that the invention may be readily understood, a preferred embodiment of the invention will be described by way of example with reference to the accompanying drawings in which:

FIG. 1 shows a frontal perspective elevation view of an assembled modular office furniture partition wall including multiple vertical partitions, with a central partition having a modified utility access panel;

FIG. 2 is a frontal perspective view, of the wall of FIG. 1, with the upper and lower cladding panels removed to reveal the internal partition frame;

FIG. 3 illustrates an elevation view of adjacent vertical posts, of the wall of FIG. 1, showing two abutting partitions with their supporting feet and horizontal beam frame members;

FIGS. 4, and 5 are sectional plan views along lines 4--4 and 5--5 of FIG. 3;

FIG. 6 is a sectional elevation view along line 6--6 of FIG. 5;

FIG. 7 is a sectional elevation view along line 7--7 of FIG. 1 showing the structure of the utility access panels with electrical power bus, and cable hanger;

FIG. 8 is a sectional plan view along line 8--8 of FIG. 7;

FIG. 9 is a sectional plan view along line 9--9 of FIG. 7;

FIG. 10 is an isometric detail view of a typical saddle bracket connection joining a horizontal beam to a vertical post in an overlapping rigid connection;

FIG. 11 is a perspective view of the connection between four adjacent partition frame posts in an X-shaped configuration;

FIG. 12 is an exploded view of the component parts of the connection shown in FIG. 11;

FIG. 13 is an exploded perspective view of the toggle clamp used to connect adjacent frames together; and

FIG. 14 is a detail elevation view of an installed toggle clamp.

FIG. 15 is a sectional, exploded perspective view of a connecting system of the present invention for securing together two partitions end-to-end.

FIG. 16 is a sectional, perspective view of the connecting system of FIG. 15 securing together the vertical end posts of two partitions.

FIG. 17 is a sectional, exploded perspective view of a connecting system of the present invention for securing together three partitions at a preselected angle.

FIG. 18 is a plan view of the connecting system of FIG. 17 securing together the vertical end posts of three partitions.

FIG. 19 is a plan view illustrating a connecting system, similar to that shown in FIGS. 17 and 18, securing together the vertical end posts of four partitions.

FIG. 20 is a sectional, exploded perspective view illustrating a first stage in providing a decorative end covering on a partition according to the present invention, wherein an end plug is inserted into a pair of horizontal beams.

FIG. 21 is a rear perspective view of the end plug shown in FIG. 20.

FIG. 22 is a sectional, exploded perspective view illustrating a second stage in providing a decorative end covering on a partition according to the present invention, wherein a single cover plate retainer is connected to the end plug to provide a single cover plate support.

FIG. 23 is a rear perspective view of the single cover plate retainer shown in FIG. 22.

FIG. 24 is a sectional, perspective view illustrating the assembled single cover plate support of FIG. 23.

FIG. 25a is a sectional, exploded perspective view illustrating the attachment of single cover plates to a partition provided with four single cover plate supports as shown in FIG. 24.

FIG. 25b is a sectional plan view showing the manner in which a single cover plate is connected to the resilient spring connector of the single cover plate support shown in FIG. 24.

FIG. 25c is a sectional plan view showing the resilient spring connector of FIG. 25a having snapped into engagement with the single cover plate support.

FIG. 26 is a sectional, perspective view illustrating three partitions according to the present invention converging at an angle of 90 degrees and connected together by brackets.

FIG. 27 is a sectional, exploded perspective view illustrating a first stage in a system for providing a decorative covering over the converging ends of the partitions shown in FIG. 26.

FIG. 28 is a top plan view of a dual cover plate retainer used in the system for providing a decorative covering over the converging ends of the partitions shown in FIG. 26.

FIG. 29 is a side elevation view of the dual cover plate retainer of FIG. 28.

FIG. 30 is a top plan view of a triple cover plate retainer used in the system for providing a decorative covering over the converging ends of the partitions shown in FIG. 26.

FIG. 31 is a rear elevation view of the triple cover plate retainer of FIG. 30.

FIG. 32 is a sectional, exploded perspective view illustrating a second stage in providing a decorative covering over the converging ends of the partitions shown in FIG. 26.

FIG. 33 is a sectional perspective view illustrating the completed decorative covering over the converging ends of the partitions shown in FIG. 26.

FIG. 34 is a sectional, exploded perspective view illustrating a system according to the present invention for providing a decorative covering over a top gap between the converging ends of four partitions.

FIG. 35 is a sectional perspective view illustrating the first stage in a system according to the present invention for hanging cladding panels on a partition using modular panel clips.

FIG. 36 is a sectional perspective view illustrating the modular panel clip of FIG. 35 installed between a pair of horizontal beams.

FIG. 37 is an exploded perspective view of the modular panel clip of FIG. 35.

FIG. 38 is a sectional perspective view of a partition according to the present invention provided with cladding panels and decorative end and top coverings.

FIG. 39 is sectional elevation view along line 39--39 of FIG. 38.

FIG. 40 is a perspective view of a modular panel clip of FIG. 39.

FIG. 41 is an end elevation view of a partition according to the present invention having a simplified cladding panel according to the present invention.

Office partition walls are assembled from adjacent rectangular partitions as shown in FIG. 1. A partition is generally clad with panels 5 and 7. The panels 5 and 7 are constructed of a painted sheet metal cover which may be filled with sound absorbing insulation and covered with sound absorbing fabric or other materials. Upper and lower panels 5 may be fitted with windows, or screens if desired. Adjustable legs 4 are provided to level the partition wall along its length.

The novel construction of the partition frame is illustrated in FIG. 2. Upper and lower panels 5 have been removed leaving only the central panels 5 and 7 behind which electrical conduits, communication wires etc. are housed. Accordingly, upper and lower panels 5 may be wholly eliminated, or in part, from the partition frames if the interior designer wishes to present a more open office atmosphere. Furniture components such as desk tops, shelves, and cabinets can be suspended from the posts 1 of the partition frame independently whether or not a design includes the uppermost and lowermost cladding panels 5.

The frames of the partition are very simply constructed of two vertical posts 1 and horizontal beams 2. The beams 2 are preferably arranged in parallel pairs on both sides of the posts 1. Pairing of the beams 2 strengthens the frame and allows use of standard panel dimensions.

The beams 2 are connected to outward opposing front and rear faces of each post 1 in an overlapping moment resisting connection.

FIG. 10 shows the preferred means by which the posts 1 and beams 2 are connected in an overlapping rigid manner. The beams 2 are shown as tubular in transverse section having a "racetrack" sectional shape. The tubular beams 2 have an arcuate upper portion and an arcuate lower portion with a straight intermediate portion between. The arcuate upper and lower portions are preferred by semicircular. This section is advantageous in that the section is easily drawn or extruded from metals such as steel and aluminum or from plastic. The section has a relatively high moment of inertia to resist torsion and flexure, and can be easily connected to the posts 1 and panels 5, as shown.

The beams 2 and posts 1 are connected, as shown in the typical connection detail of FIG. 10, with brackets 3 having a saddle portion 20 of internal profile mating the external profile of the beams 2. The brackets 3 also include flange portions 21 above and below the saddle portion 20. The flange portions 21 lie over and are connected to the outward forward or rearward face 22 of the associated posts 1. In the embodiment shown in FIG. 10, the flange portions 21 are perforated and the bracket 3 is connected to the post 1 with self tapping screws 23. Other conventional means may also be used such as rivets, bolts, spot welding or puddle welding (not shown).

The cladding panels 5 include resilient clips (26 and 27 in FIG. 6) for releasably coupling each panel 5 between associated parallel upper and lower pairs of beams 2. In the preferred embodiment illustrated, the cladding panels 5 are positioned outward of, overlying and coupled to the beams 2. Due to the thickness of the saddle portion 20 of the brackets 3 shown in FIG. 10, a gap is present between the beams 2 and the adjacent top or bottom edge of the panels 5.

The partition is formed from an open gridwork of posts 1 and beams 2. As a result, the partition has an open interior cavity which advantageously permits the passage of wires and cables generally indicated as 32.

As seen in FIG. 6 the cavity is made up of a vertically extending central post space 40 together with horizontally extending raceways 41 adjacent and open to the central post space 40.

The central post space 40 is defined between the posts 1, that is between a forward plane including the forward face of each post 1 and a rearward plane including the rearward face of each post 1. The central post space 40 extends vertically between the spaces, parallel forward and rearward planes and between interior faces of the posts 1. The central post space 40 extends continuously vertically throughout the height of the partition and is open upwardly to above the top of the partition and is open downwardly to below the lowest beam 2 of the partition.

A plurality of raceways 41 extend horizontally between the beams 2 outward of and respective of the forward or rearward planes. The raceways 41 extend the full width of each partition and are open at each end to beyond the exterior end faces of the posts 1.

The raceways 41 are inward of the panels (5 and 7) and preferably extend forwardly and rearwardly from the respective forward or rearward plane at least the thickness of the beams 2.

The raceways 41 are open on their inner sides to the central post space 40 over the entire distance between the posts 1. Whereas the central post space 40 ends at the interior end faces of the posts 1, the raceways 41 provide for a passageway for cables 32 horizontally past the posts 1 outward of the posts 1 inward of the panels 5, 7.

Similarly the central post space 40 provides a passageway for cables 32 vertically past the beams 2 inward of the beams 2 and inward of the panels 5, 7. With the raceways 41 and central post space 40 in communication, the cavity permits cables 32 to be passed vertically through the portion between the posts 1 inside the beams 2 and horizontally across a partition and between adjacent partitions in the raceways outside the posts 1, between the beams 2 and inside the panels 5, 7. In the context of FIG. 2, with a plurality of corresponding panels 5 removed, a continuous raceway 41 will extend along the entire width of the three joined partitions into which cables 32 may easily be laid.

Referring to FIGS. 3 through 9, the details of construction of the partition frame are illustrated. In the embodiment illustrated the posts 1 are hollow structural square steel tubes. The posts 1 include a vertical series slots 24 in their outward forward and rearward faces. The slots 24 are used to adjustably and removably support hanger means for suspending various furniture components upon the posts 1 of each partition.

Adjacent posts 1 of adjacent partition frames are connected with releasable securing means in the form of toggle clamps 25 as shown in FIG. 3.

Adjustable height legs 4 are provided at the base of each post 1 to support the partition frame, and level the assembled partition wall on the supporting floor surface.

Preferably the beams 2 are arranged in parallel pairs, with one beam 2 of each pair being connected to the outward opposing faces of each vertical post 1. The pairs of beams 2 are vertically spaced from other pairs of beams 2 at uniform vertical intervals.

The panels 5, as shown in FIG. 6, are releasably coupled between associated parallel upper and lower beams 2 with resilient clips 26 and 27. The lower resilient clip 26 rests upon the upper arcuate curved surface of the lower beam 2. The upper resilient clip 27 has an inward leading lip 28 which guides the upper clip 27 over the lower semicircular rounded surface of the upper beam 2 in order to resiliently engage the upper beam 2.

FIG. 9 shows a sectional view in the plan which illustrates further details of the clips 26 and 27. Advantageously the clips 26, 27 are formed of plastic together with a panel bulkhead 29 which closes and masks both ends of the panel 5.

FIG. 9 shows that between ends of adjacent panels 5 there is a vertical gap of width "g" provided. The gap "g" enables the insertion of the hanger means 30. The hanger 30 has an inward end which has inward facing dogs 31 to co-act with selected slots 24 in the outward face of the posts 1. The inward end of the hanger 30 is bent in an offset S-shape in order that the cladding panels 5 cover over the slots 24 and the inward end of the hanger 30. As a result, the slots 24 and associated offset parts of the hanger 30 are not visible when the panels 5 are installed. The hangers 30 extend outwardly from the posts through gap "g" and may be used in known manner to support furniture components such as desktops, shelves, cabinets and the like.

A particularly advantageous feature of the partition according to the invention relates to the capacity to accommodate cables and wires 32 in a novel fashion having regard to the interior cavity comprising the central post space 40 and the raceways 41 described earlier. While many different configurations may be adopted to pass cables and wires 32 between partitions and into and out of the interior cavity, one preferred embodiment is illustrated. Referring to FIG. 7, FIG. 7 shows a portion of a raceway indicated and referred to as raceway 41b, underneath an upper panel indicated as 5b, adapted to carry horizontally extending communication wires 32b and another portion of the same raceway indicated and referred to as raceway 41a, underneath recessed panel 7 adapted to carry horizontally extending electrical cables 32a. As shown in FIG. 7, in a preferred embodiment, the intermediate panels 5 may be used to house communication wires 32b for computers and other office equipment. Intermediate panels 5a maybe used to house electrical power outlets 8, an associated electrical power bus 33 and associated electrical power cables 32. Since such wires 32b, cables 32a and power bus 33 are commonly required to be hidden, the embodiment of FIG. 2 shows the intermediate panel 5b and recessed panel 7 remaining installed, whereas the other panels 5 are removed.

In FIG. 7 in dotted outline, an optional cladding panel 5a is shown installed over recessed panel 7. The recessed panel 7 has an upper portion 7a which is inwardly upwardly recessed so as to not extend forwardly beyond the faces of the post 1 in order to provide space for vertical passage of the wires 32b from the raceway 41b to equipment which is external to the partition panels 5. Passing the wire 32b in raceway 41b downward adjacent the upper portion of recessed panel 7 and then out under the panel 5b effectively and simply masks the entry of wires 32b into the partition.

Above the recessed panel 7, wires 32b are accommodated within a cable support tree 34. The cable support tree 34 is attached with screws to an inner end face of an adjacent post 1. The tree 34 comprises a vertical member with vertically spaced apart series of laterally extending cable support arms 35. As drawn, the tree 34 has support arms 35 extending into raceway 41b on the right side only, for clarity. However, it will be understood that arms 35 may advantageously be provided on the left side as well. A modified cable support arm 36 includes an outward extension to engage supporting rods 37 secured to the rear of the removable cladding panel 5b. The removable panel 5b may be removed by pushing the bottom edge inward, which pivots the panel 5 about the boss 44 below the panel center line to snap the top rod 37 out of engagement with the top modified arm 36. While the cable support trees are shown attached to each post, depending on the width of a panel 5, additional support trees 34 may be provided inserted between the posts 1 supported by the beams 2.

Advantageously, as best illustrated, in FIG. 7 wires 32b pass along the entire width of each partition and between adjacent partitions via horizontal cable raceway 41b. The raceway 41b as illustrated is of depth "d.sub.1 " is bounded by the outward face of the post 1 and panel 5b, and of height "h.sub.1 " bounded vertically by the horizontal beams 2 of two vertically spaced apart pairs of beams 2.

The lower portion 7b of the recessed panel 7 covers an electrical bus 33. Electrical power cables 32a are shown to pass horizontally to buses 33 in adjacent panels via raceway 41a. Raceway 41a is illustrated as having depth "d.sub.2 " and height "h.sub.2 ". The buses 33 are fixed to the posts 1 or beams 2 and include electrical outlets 8 on each side. To ensure the safety of the installation, the recessed panel 7 is connected to the posts 1 and the bus assembly with screws or other relatively permanent connectors. Accidental access to live electrical components is avoided therefore.

Electrical outlets 8 are accommodated by merely punching holes in the appropriate locations through the lower portion of the recessed panel 7. If access to the electrical bus 33 and electrical outlets 8 is not required, an optional cladding panel 5a (as shown in dotted outline in FIG. 7) may be installed over the recessed panel 7 in order to provide an uninterrupted finished appearance. Alternatively, the power bus 33 component may be eliminated entirely from that partition.

The optional cladding panel 5 may be conveniently stored within the cavity of the partition, behind an upper panel 5 for example, if access to the electrical outlets 8 and recessed panel 7 is desired.

The central post space 40 provides vertical passage throughout the entire height of the partitions other than where blocked by the bus 33. FIG. 7 schematically illustrates a length of electrical cable 32a extending to one end of bus 33, past the bus 33 up the central post space 40 from below the lowermost beams 2, to up to the height of the cable tree 34. As illustrated, between the panels 7 the central post space 40 has been narrowed to a vertical duct 40a of depth at least as great as the thickness of cable 32. Panels 7 need not be recessed inside the forward and rearward faces of the posts 1. When electrical power is accessed at floor level, the central post space 40 may be used to pass cables 32a upwardly from a power source in the floor and the bus 33. When electrical power is accessed from ceiling level, conventional power poles may be used which communicate with upper portions of the central post space 40 downwardly to the bus 33.

Electrical cables 32a are preferably armored in metal, and pass across the entire width of a partition and between adjacent partitions through the horizontal raceway 41a. Commercially available modular buses 33 are preferably used having outlets on both sides with pigtail conduits 32a for interconnection in lengthwise series along the length of the assembled partition wall.

Therefore the specific combination of the upper raceway 41b and the lower cable raceway 41a, and central post space 40 of the partition provide convenient means to house cables 32a and wires 32b hidden from view behind removable panels 5b and recessed fixed panel 7. All cables 32a and wires 32b may pass easily between adjacent partitions within the cable raceways 41a or 41b between the vertical posts 1 and exterior cladding panels 5 and 7.

Preferably the intermediate panel 5b which covers the cable supporting tree 34 is positioned immediately above desktop height. The recessed panel 7 is positioned immediately below desktop height. Since the raceways 41a and 41b pass on the outward surface of the posts 1, slots 24 which support hanger brackets 30 cannot be accessed in the immediate area of the raceways 41a or 41b when cables or wires 32 are to be housed within the raceways. However, this feature is not particularly disadvantageous, since in general, hanger brackets 30 are positioned above desktop height for shelves and filing cabinets, whereas hangers 30 are positioned below desktop height to support desks, and filing cabinets.

Therefore hangers 30 in the immediate area above desk top height are not generally required. If a design calls for hangers 30 in that specific location, it is a very simple matter to position the cable tree 34 at a higher or lower panel 5 location. Since the entire internal cavity 40 of the partition is open, wires 32b and cables 32a may be relocated anywhere within the interior cavity 40 of the partition to meet the requirements of a specific design.

FIGS. 11 and 12 show the details of the connection between four adjacent partitions in an X-shaped pattern. It will be apparent that connections of two or three adjacent panels in L-shaped or T-shaped patterns or between panels in other than 90.degree. orientation can be accomplished in an analogous manner.

The leading hook-shaped ends of the toggle clamps 25 extend through slots in the posts 1 and engage a slotted opening 13 in the X-shaped connector 14. Upturned legs 15 are pressed against the lateral surface of the posts 1 and clamped securely. Further securement of the connection may optionally be provided by bolting arrowhead-shaped connectors 16 to connector 14 with the end inserts 16a of each connectors telescopically received within the interior of the open ends of the associated tubes 2. The arrowhead connectors 16 include mating apertures in order to bolt them to the X-shaped connector 14.

It has been found by experimentation that only one X-shaped connector 14 need be used at the mid-height level to securely connect four adjacent frames. Additional strength may be achieved if necessary in specific circumstances by providing additional X-shaped connectors 14 as shown in FIG. 11. Preferably though, only one X-shaped connector 14 need be used, and for additional stability and strength arrow-head connectors 16 may be used without connector 14. In this case disks 42 are used as a vehicle to which to secure adjacent arrow-head connectors 16 inserted into the interior of each pair of beams 2 throughout the height of the partition. The use of relatively expensive toggle clamps 25 therefore can be minimized without sacrificing the strength of the connection.

In order to secure abutting partitions together in a straight run, a single toggle clamp 25 may preferably be used. As shown in FIGS. 3 and 9, the pairs of beams 2 at the top and bottom of the abutting partitions may be joined together with inserts 43 which are force fit within the open ends of abutting beams 2 and span across between abutting beams 2.

The individual partitions in accordance with the present invention have been found to have surprisingly great strength and rigidity on an individual basis. When partitions are joined together end to end with inserts 43 received in the open ends of abutting beams 2 the combined partitions have yet increased and surprising strength and structural integrity.

In order to fabricate partitions, and assemble partitions in accordance with the invention, the following method of production is followed.

The posts 1 and beams 2 are cut to length from mill stock lengths according to the desired finished dimensions of the partition. Elongate slots 24 are cut into each of the two outward faces of each post 1. Elongate slots 46 to accommodate toggle clamps 25 are also cut in the side faces of each post 1. Holes for screws to attach the saddle brackets 3 are drilled in the outward face of each post 1, and holes are drilled in the side faces of each post 1 near their base to receive self-tapping screws which secure the legs 4 in place.

Beams 2 and posts 1 are then electrostatically coated. The painting operation is carried out by painting posts 1 and beams 2 hung side by side in parallel within an electrostatic painting booth. Compared to the painting of a relatively open welded frame, the painting of posts 1 and beams 2 before assembly is more efficient.

In general, it is more efficient to assemble the partitions in a high production factory environment using jigs, workstations, specialized tools, and handling equipment. The assembled frames may then be shipped to a site for erection.

However, an advantage of the partition design is that, if desired, the frames of the partitions may be constructed on site using simple tools and relatively unskilled labour. The posts 1, beams 2, saddle brackets 3, feet 4, panels 5 and 7, and other components may be packaged in cartons or compact bundles for transport to a site.

Two posts 1 are laid down on one outward face parallel to each other. A jig is preferably used in factory assembly to speed up assembly however it will be understood that a jig is not necessary since the predrilled holes for the saddle brackets 3 will ensure proper spacing and alignment of beams 2 and posts 1 when assembled on site. Beams 2 are overlapped upon the outward face of the posts 1. Saddle brackets 3 are positioned over the ends of the beams 2 and are secured in place with self-tapping screws 23 using a power screwdriver. The partially assembled frame is then turned over and the second beam 2 of each parallel pair of beams 2 is secured to the opposite outward face of each post in a like manner.

As shown in FIGS. 3 and 5, legs 4 have a cast metal body 4a with a slotted clip 4b upon which the bottom edge of the post 1 is positioned and an upper flange 4c through which self-tapping screws are driven to secure the leg body to the side face of each post 1 base. The cast body also includes a vertical threaded bore to house a threaded shaft 4d. The lower end of the shaft 4d is pivotally connected to a foot base, thereby providing height adjustment to level the partition on uneven floor surfaces.

The assembled frames are erected and connected together in the desired pattern through the use of toggle clamps 25. When X-shaped, T-shaped, L-shaped or other frame connections are desired, as shown in FIGS. 11 and 12, slotted connectors 14 and arrowhead connectors 16 are used to complete a rigid assembly.

To join posts of two partitions together in a straight run, as best shown in FIG. 14, the arm 44 and hook 45 of the toggle clamp 25 is inserted through aligned elongate slots 46 in the side faces of the posts 1. The hook 45 engages the side face 47 of the second post 1 remote from the remaining body of the clamp 25. From the exploded view of FIG. 13, it will be apparent that when the clamp handle 48 is rotated 90 degrees, the abutting cam faces 49 and 50, and 51 and 52 co-act to clamp the posts 1 between the hook 45 and the shoulder face 53.

The cable trees 34 are installed throughout the length of partition wall to be served by office equipment.

Modular electrical buses 33 is installed in the desired locations. Electrical power cables 32a are run from a power source vertically up or down the partition of one interior cavity to one bus 33 location and the horizontally through the raceway 41b across the width of that partition and to adjacent partition. Recessed panels 7 are secured to the cable trees 34 with self-tapping screws.

Furniture components, such as desktops, shelves, filing cabinets etc., are suspended from the posts 1 upon hanger brackets 34 by inserting the dogs 31 of the hangers 34 into the slots 24 of the posts 1. Panels 5 are then resiliently coupled to the beams 2 where desired, covering over the slots 24 and the inward ends of the hangers 30.

Office equipment such as computers, facsimile machines, telephones, printers, modems, ICU servers etc. are installed within the office space often supported upon the shelves or desktop components. Wires are passed between equipment external to the partition panels 5 and the cable tree 34 housed within the internal cavity 40 of the partition frame.

Wires 32b and cables 32a, are passed between adjacent partitions through the raceway 41b and supported at intervals along the length of the partition wall upon the cable trees 34. The armored electrical power cables 32a are passed through the raceway 41a. When all wires 32a have been installed, the rods 37 of cover panel 5b are engaged upon the modified support arms 36 of the cable trees 34 to enclose the wires 32b within the interior cavity of the partitions.

The partition described above therefore provides a simple construction for a partition. Rigid connections between the posts 1 and beams 3 are readily provided by the simple means attaching brackets 3 at the appropriate levels. The partitions may be substantially fabricated by simply cutting beams 2 and posts 1 to the appropriate length. The partitions may be shipped to the site in knocked-down bundles, and erected on site using simple tools and relatively unskilled labour. The customer may easily disassemble and reassemble the partitions during moving or when rearranging the office layout.

Cables 32a and wires 32b and electrical bus 33 are conveniently housed within the hollow interior cavity of the partition. Wires 32b and electrical power cables 32a are readily accessible behind removable panels 5a and 5b. The need to thread such wires and cables 32 through openings in the posts 1 is eliminated by the provision of two outward raceways 41a and 41b. As a result the installation, removal and maintenance of office equipment is simplified, and wires and cables 32a and 32b are not subjected to the level of wear occasioned through use of conventional partition designs.

Only the intermediate cladding panels 5a and 5b are required in most cases, as shown in FIG. 2, to cover the electrical bus 33 and wires and cables 32a and 32b. The remaining upper and lower panels 5 may optionally not be provided if desired, thereby further reducing the cost of the partition wall. The surface finish and connection detail design may be undertaken to result in an exposed structural "high tech" look which is relatively inexpensive and is currently popular in architectural and interior design.

A very simply constructed partition is provided which meets the increasingly onerous requirements for accommodating the numerous electrical and communication cables 32 of modern office equipment.

In the preferred embodiments, as shown in FIG. 6, the panels 5 have an end cap, indicated as 100, with an inner edge 102 such that raceway 41 is defined between edge 100 and the outer face of the posts 1. The panels 5 need not have such end caps 100. Avoidance of the end caps 100 can increase the depth of the raceways 41.

In the preferred illustrated embodiment, the cladding panels 5 have been shown to overlap and be outward of the beams 2. It is to be appreciated that the cladding panels 5 may be provided to not overlap the beams 2 but to be between the beams 2 with the panels 5 being open at their ends and in effect hollow to define the horizontal raceways within the panels 5 between the beams 2.

Although this disclosure has described and illustrated certain preferred embodiments of the invention, it is to be understood that the invention is not restricted to these particular embodiments. For example, the beams 2 and posts 1 may be constructed of any commonly available section, or of specially fabricated sections through extrusion, such as: hollow rectangular tubes, square tubes, round tubes, oval tubes, extruded members, drawn tubes, channel members, I-beam members, and angle members. The panels 5 as well may be constructed having an external cover made of various commonplace materials such as: roll formed sheet metal; extruded aluminum; extruded plastic; fiberboard; and fabric. Therefore, the invention includes all embodiments which are functional or mechanical equivalents of the specific embodiments and features that have been described and illustrated herein.

FIGS. 13 and 14 show a first securing assembly for securing together two partitions end-to-end in a straight line.

A second, more preferred securing assembly 110 is shown in FIGS. 15 and 16 for securing together two partitions in accordance with the present invention having rectangular frames with vertical, rectangular end posts 1. For clarity, FIGS. 15 and 16 illustrate only small portions of two vertical, rectangular end posts 1 belonging to adjacent partitions. However, it is to be understood that each end post 1 forms part of a rectangular, upright partition.

The posts 1 each have an inner face 132, an end face 134, and two side faces 136. Each end face 134 defines an end surface of its associated partition. The posts 1 are joined with their respective end faces 134 abutting.

Each post 1 has a square aperture 140 in its inner face 132 and a square aperture 142 in its end face 134. FIG. 15 does not show the entire apertures 140 and 142 but for clarity shows the posts 1 as being cut off through the apertures 140 and 142.

As shown in FIG. 15, the securing assembly 110 comprises an elongated fastener element 114 having two cylindrical threaded ends 116 and an enlarged intermediate portion 118 therebetween. Fastener element 114 has conical portions 120 forming a transition between intermediate portion 118 and threaded ends 116.

The securing assembly 110 also comprises two sleeve nuts 122. Each sleeve nut 122 comprises a head 124 and a sleeve 126 having a threaded interior 128 adapted to thread onto a threaded end 116 of fastener element 114. The head 124 of sleeve nut 122 is provided with a depression 130 adapted to receive a fastening tool. FIG. 15 shows a particularly preferred hexagonal depression 130 adapted to receive a fastening tool with a hexagonal bit, such as an allen wrench.

The posts 1 are joined as follows. Firstly, the posts 1 are roughly aligned so that the apertures 142 in their end faces 134 are in rough vertical and horizontal alignment. Then, a first sleeve nut 122 is threaded on to a first threaded end 116 of fastener element 114. The second threaded end 116 of fastener element 114 is inserted through the aperture 140 of a first post 1 until enlarged intermediate portion 118 becomes received in apertures 142 of both posts 1 and the sleeve 126 of the first sleeve nut 122 becomes received in an aperture 140 of the first post 1 with the head of the first sleeve nut 122 abutting the inner face of first post 1.

The securing assembly 110 is then completed by sliding second sleeve nut 122 into aperture 140 of the second post 1 and threading the second sleeve nut 122 onto the second threaded end 116 of fastener element 114. The sleeve nuts 122 are then tightened using a fastening tool until end faces 134 abut one another and the heads 124 of sleeve nuts 122 are received against inner faces 132, as shown in FIG. 16.

As the apertures 142 in the end faces 134 of posts 1 are sized and shaped to receive the enlarged intermediate portion 118 against rotation, rotation of either sleeve nut 122 will result in tightening of the securing assembly. It is also greatly preferred that, as shown in FIGS. 15 and 16, the apertures 142 and the enlarged intermediate portion 118 have the same square shape and are closely sized to have the same cross-sectional shape as the intermediate portion 118. This results in the insertion and tightening of the fastener element 114 in the apertures 142 drawing the posts 1 into precise horizontal and vertical alignment.

The conical portions 120 of fastener element 114 assist in sliding element 114 through apertures 140 and 142 and particularly in assisting in aligning the posts 1 in initial insertion of the fastener element 114.

The aperture 140 in the inner face 132 of each post 1 is sized and shaped to rotatably receive the sleeves 126 of the sleeve nuts 122. Apertures 140 are small enough to prevent heads 124 of the sleeve nuts 122 from passing therethrough but large enough to allow enlarged intermediate portion 118 of fastener element 114 to pass therethrough.

Although FIGS. 15 and 16 show the apertures 142 and intermediate portion 118 of fastener element 114 as being square, it is to be understood that that apertures 142 and the intermediate portion 118 may independently be of any shape as long as intermediate portion 118 is retained against rotation in apertures 142 and preferably provide complementary surfaces for locating the posts 1 into alignment. More preferably, aperture 142 and intermediate portion 118 have the same regular polygonal shape, i.e. all sides of the polygon being of the same length. This allows for ease of insertion of the enlarged intermediate portion 118 into apertures 142.

It is also preferred that the inner face 132 and outer face 134 of each post 1 have apertures 140 and 142 of identical shape and size. Further, it is preferred that apertures 140 and 142 be centered midway between side faces 136 of each post 1 and be aligned vertically. The identical size, shape and placement of holes 140 and 142 makes the inner and end faces 132 and 134 of each post 1 reversible, simplifying assembly of the partitions.

In the embodiment of FIGS. 15 and 16, the end faces 134 of each post 1 are preferably drawn together with or without the spaces indicated as 43 in FIG. 3.

FIGS. 11 and 12 illustrate a first connecting system for securing together two or more partitions at preselected angles to one another.

FIGS. 17 to 19 illustrate a second, more preferred, system for securing two or more partitions at an angle to each other. FIG. 17 shows three identical rectangular, vertical end posts 1a, 1b and 1c. Each end post 1 forms a part of a rectangular frame of a rectangular, upright partition however for convenience, all details of the partitions, except for the end posts 1, are omitted in FIGS. 17 to 19.

The end faces 134 of posts 1 are shown in FIG. 17 as being at a preselected angle of 90.degree. to one another, that is with the preselected angle between the end faces 134 of posts 1a and 1b being 90.degree. and the preselected angle between the end faces 134 of posts 1b and 1c being 90.degree..

The connecting system of FIGS. 17 to 19 utilizes a plurality of modular connecting brackets 144. As best seen in FIG. 17, each bracket 144 comprises two vertical end flanges 148 connected by a central horizontal bight portion 150. The bracket 144 is constructed so that the angle between the vertical planes containing the end flanges 148 is the same as the preselected angle between the end faces 138 of adjacent posts 1, that is 90.degree..

FIG. 17 illustrates a particularly preferred connecting bracket 144 having a horizontal bight portion 150 which is flat, has the same width as flanges 148 and describes a 90.degree. arc between the end flanges 148.

FIG. 17 shows posts 1a and 1b in the process of being joined to one another at the preselected angle of 90.degree. by one modular connecting bracket labelled 144a. The end flanges 148a of connecting bracket 144a abut against the end faces 134 of the respective posts 1a and 1b. The central horizontal bight portion 150a of bracket 144a extends outwardly from, and generally forms a L-shape between, the end faces 134 of respective posts 1a and 1b.

FIG. 17 also shows a second modular connecting bracket 144b in position to join posts 1b and 1c to one another at the preselected angle of 90.degree.. One end flange 148b of bracket 144b is shown as abutting a flange 148a of bracket 144a against the end face 134 of post 1b.

The connecting system also comprises bolts 152 and nuts 154 to secure each end flange 148 to an end face 134 of a post 1.

Each flange 148 is secured by passing a bolt 152 through an aperture 156 in flange 148, and through aperture 142 in end face 134 of post 1. The bolt 152 comprises a head 158 and a shank 160, the shank 160 having a lower, cylindrical threaded portion 162 onto which nut 154 is threaded and an upper enlarged portion 164 which is received against rotation in the apertures 142 and 156 in post 1 and flange 148, respectively. Preferably, a conical portion 166 is provided on the shank 160 between threaded portion 162 and enlarged portion 164 to assist in inserting bolt 152 through apertures 156 and 142.

FIG. 17 shows the aperture 142 and the enlarged portion 164 having a preferred square shape, with aperture 142 being shaped and sized to permit enlarged portion 164 of shank 160 to be closely received against rotation in aperture 142 in post 1. It is to be understood that apertures 142 and 156 and enlarged portion 164 may be of any shape as long as enlarged portion 164 is received against rotation in one or both of apertures 142 and 156.

As discussed above in reference to FIGS. 15 and 16, the apertures 142 and 144 of post 1 are preferably of the same shape and size and are preferably horizontally centered in the respective faces of the posts 1. This permits preferred interchangeability of the inner and end faces 132 and 134, respectively. Also, the apertures 140 and 142 of adjacent posts 1 are preferably vertically aligned so that the bracket 144 extends horizontally between adjacent posts 1.

The apertures 156 in flanges 148 are preferably in the form of vertically elongated slots. This permits the brackets 144 to be shifted vertically by a small amount relative to aperture 142 in post 1, to permit more than one flange 148 to be connected to a single post through a single pair of apertures 142 and 144 in each post 1.

Preferably, the brackets 144 are connected to posts 1 with their end flanges 148 extending vertically upwards to allow for easier installment of bolts 152.

FIG. 18 is a top plan view showing how the three vertical posts 1a, 1b and 1c of FIG. 17 are joined together by two identical modular connecting brackets 144a and 144b having the orientation as shown in FIG. 17, i.e. with both brackets 144a and 144b having flanges 148a and 148b, respectively, extending upwardly and with bracket 144a connecting posts 1a and 1b, and bracket 144b connecting posts 1b and 1c.

Similarly, FIG. 19 illustrates a connecting system for securing together four partitions at a preselected angle of 90.degree., the connecting system of FIG. 19 utilizing four identical modular connecting brackets 144 to secure the end posts 1 of four adjacent partitions spaced from and at a preselected angle to one another. In FIG. 19, the four vertical end posts 1 are labelled 1a, 1b, 1c and 1d, with the brackets similarly numbered 144a, 144b, 144c and 144d. Each end post 1 has vertical flanges 148 of two different modular connecting brackets 144 secured to its end face 134. In FIG. 19, each bracket 144 has one end flange 148 abutting against the end face of a post 1 and the other flange 148 abutting against a flange 148 of another bracket 144. This arrangement is necessary in a connecting system having four identical modular connecting brackets 144. In an alternate arrangement, (not shown), four partitions are secured together at a preselected angle 90.degree. using only three modular connecting brackets 144. This is done merely by eliminating any one of the modular connecting brackets 144 shown in FIG. 19.

FIGS. 20 to 25c illustrate a preferred system for installing a decorative cover plate on the end surface 140 of a rectangular, upright partition in accordance with the present invention.

The preferred cover plate connecting system shown in FIGS. 20 to 25c has a two part cover plate support 222, comprising separate end plug 178 and a cover plate retainer 200. The end plugs 178 are connected to the partition first and are therefore described first below.

FIGS. 20 and 21 illustrate a preferred end plug 178 and its insertion into the open ends 172 of a pair of horizontal beams 2. The end plug 178 is generally U-shaped and comprises a pair of parallel legs 180 adjoining a horizontal bight portion 182. The end plug 178 is preferably integrally molded from a resilient, yet rigid, plastic material. The legs 180 are adapted to be securely received in the open ends 172 of beams 2 and preferably comprise a plurality of adjacent, vertical ribs 184 connected by horizontal webs 186. The ribs 184 are shaped and sized to be closely received in the open ends 172 of horizontal beams 2. The legs 180 are inserted into open ends 172 until all ribs 184 are received inside beam 2 and stop 188 abuts the end face 190 of beam 2.

The bight 182 of end plug 178 preferably comprises a forwardly facing convex portion 192 and a flat horizontal portion 194 behind convex portion 192, extending between legs 180. The horizontal portion 194 has a pair of shoulders 196 adapted to abut the end face 134 of post 1 when legs 180 are fully inserted into beams 2, leaving a vertical slot 198 (shown in FIG. 22) extending laterally between the horizontal portion 194 of bight 182 and the end face 138 of post 1, and extending longitudinally between the shoulders 196. The fully inserted end plug 178 is shown in FIG. 22.

FIGS. 22 and 23 illustrate the second component of the cover plate support, namely cover plate retainer 200.

FIG. 22 illustrates cover plate retainer 200 as having a convex outer surface, and a hollow inner surface having a connecting mechanism 202 to attach the cover plate retainer 200 to the end plug 178. The cover plate retainer 200 has an upper surface comprising a bulbous plug connector 204, a lower resilient spring connector 206 and a lip 208 between connectors 204 and 206, the lip 208 extending about the outer periphery of cover plate retainer 200.

As shown in FIG. 23, connecting mechanism 202 comprises a vertical snap connector 210 having downwardly extending legs 212 which are adapted to slide vertically into the vertical slot 198 between the end face 134 of post 1 and the horizontal portion 194 of end plug 178. The legs 212 are retained in place by shoulders 214 which snap into secured engagement with flat horizontal portion 194 of end plug 178.

FIG. 23 shows connecting mechanism 202 further comprising a support 216 provided between each leg 212 and the inside of cover plate retainer 200. Each support member 216 has a slot 218 shaped to receive the convex portion 192 of bight 182 when cover plate retainer 200 snaps into engagement with end plug 178.

The cover plate retainer 200 may be integrally formed from a single piece of resilient, rigid plastic. However, the legs 212, and at least the tips 220 of spring connector 206 are preferably formed from thin, resilient pieces of metal such as aluminum.

FIG. 24 illustrates one assembled cover plate support 222 attached to the end face 134 of post 1. The cover plate support 222 comprises an end plug 178 and a cover plate retainer 200. The cover plate retainer 200, having had its vertical snap connector 210 inserted into vertical slot 198, is securely attached to end plug 178.

As shown in FIG. 24, the resilient spring connector 206 of cover plate retainer 200 extends forwardly of the bight 182 of end plug 178.

FIG. 25a illustrates a preferred manner in which a decorative covering may be provided over the end surface 138 of a partition by connecting a plurality of cover plates 224 to cover plate supports 222. The partition 168 shown in FIG. 25a has four pairs of parallel horizontal beams 2 and therefore has four cover plate supports 222, which have been numbered 222a, 222b, 222c and 222d for convenience.

The lowermost cover plate support 222a has been assembled "upside down" compared to the others by inserting the legs 212 of cover plate retainer 200 upwardly into vertical slot 198. Therefore, cover plate support 222a has its bulbous plug connector 204 facing downwardly and its resilient spring connector 206 facing upwardly. Remaining cover plate supports 222b, 222c and 222d are assembled as shown in FIGS. 22 to 24 with bulbous plug connector 204 facing upwardly.

As shown in FIG. 25a, each cover plate 224, labelled 224a, 224b and 224c, is a thin, planar member which has a convex, C-shaped transverse cross-section providing wrap around corners 226, and with the convex shape of cover plate 224 defining an inner cavity 228. The wrap around corners 226 are adapted to allow each cover plate 224 to both form a snap connection with the resilient spring connectors 206 and to slidingly engage a bulbous plug connector 204 of a cover plate support 200.

Lower most cover plate 224a is in position to be snapped into engagement with resilient spring connectors 206 of cover plate supports 222a and 222b in the manner shown in FIGS. 25b and 25c.

FIGS. 25b and 25c are cross-sectional views in a horizontal plane through a spring connector 206 and a cover plate 224, showing the spring connector 206 and cover plate 224 in isolation. FIG. 25b shows cover plate 224 being pressed against spring connector 206 in the direction of arrows A, with wrap around corners 226 of cover plate 224 forcing tips 220 of spring connector 206 to bend inwardly in the direction of arrows B.

Cover plate 224 is pressed in the direction of arrows A until tips 220 bend sufficiently to snap into wrap around corners 226 as shown in FIG. 25c. Resilient tips 220 then return to their original, unbent configuration and spring connector 206 becomes securely engaged inside cavity 228 of cover plate 224.

The intermediate cover plate 224b is shown as being partially installed, with its lower end having been slid downwardly over the upper bulbous plug connector 204 (not shown) of cover plate support 222b. The plug connector 204 is shaped and sized to be securely received in cavity 228 of cover plate 224b.

Once the lower end of cover plate 224b has been slid over plug connector 204 of cover plate support 222b as described above, the upper end of cover plate 224b is pivoted toward cover plate support 222c and snapped into engagement with its resilient spring connector 206, as described above with reference to cover plate 224a.

FIG. 25a illustrates an uppermost cover plate 224c having been installed between cover plate supports 222c and 222d. The lower end of cover plate 224c has been slid into engagement with plug connector 204 (not shown) of cover plate support 222c and the upper end of cover plate 224c has been snapped into engagement with resilient spring connector 206 (not shown) of uppermost cover plate support 222d. As shown in FIG. 25a, the forwardly extending horizontal lips 208 of cover plate supports 222c and 222d are preferably flush with the installed cover plate 224.

As shown in FIG. 25a, the bulbous plug connector 204 of uppermost cover plate support 222d is exposed at the upper terminal end of the decorative end covering on the end surface 138 of partition 168. Similarly, the bulbous plug connector 204 of lowermost cover plate support 222a will be exposed, facing downwardly, at the lower terminal end of the end covering after attachment of lowermost cover plate 224a. The exposed smoothly rounded surfaces of the bulbous plug connectors 204 provide a decorative appearance to the upper and lower terminal ends of the decorative end covering on partition 168.

In addition, the upper surface of the partition 168 shown in FIG. 25a is provided with a top cover plate 230 being generally convex and positioned on top of the uppermost pair of horizontal beams 2. The plug connector 204 of uppermost cover plate support 222d is preferably flush with the upper surface of top cover plate 230 and provides a smooth transition between the decorative end covering on the end surface 138 of the partition 168 and the top cover plate 230 on the top surface of the partition 168.

In a modular office furniture system comprising a plurality of partitions according to the present invention, it is frequently desirable to have two or more partitions meeting at a preselected angle in a manner as shown in FIGS. 17 to 19. The present invention provides a system for forming a decorative covering over the converging ends of two or three partitions having ends converging at a preselected angle. Reference is made to FIGS. 26 to 34 describing such a system.

FIG. 26 illustrates three partitions 232, 234 and 236 according to the present invention having ends converging at a preferred preselected angle of about 90.degree., as measured between adjacent partitions. The partitions shown in FIG. 26 are each identical to those described above, having vertical, rectangular end posts 1 and pairs of horizontal beams 2. The end posts 1 of the respective partitions 232, 234 and 236 are labelled 1a, 1b and 1c for convenience.

End posts 1b and 1c are of identical height and are both greater in height than end post 1a. Preferably, as shown in FIG. 26, the pairs of horizontal beams 2 are spaced apart a constant distance D, with each partition having a pair of beams 2 proximate its top and a pair of beams 2 proximate its bottom. The constant spacing D between the pairs of beams 2 allows vertical alignment of adjacent partitions.

FIG. 26 shows the three posts 1a, 1b and 1c being joined by two modular connecting brackets 144a and 144b of the type shown in FIG. 17. When the posts 1 are viewed in a plan view, they have an orientation identical to that shown in FIG. 18, with the modular connecting brackets 144a and 144b connecting the three posts 1 to one another.

After the three partitions 232, 234 and 236 have been secured together at the preselected angle by modular brackets 144, the next step in providing a decorative covering is to insert end plugs 178 into the open ends 172 of each pair of horizontal beams 2 as illustrated in FIG. 20. FIG. 27 shows the partitions of FIG. 26, however with end plugs 178 inserted into the ends 172 of each pair of beams 2.

FIG. 27 labels the three levels of horizontal beams 2 as A, B and C from top to bottom. At level A, there are two partitions 234 and 236 intersecting at 90.degree. to one another.

A cover plate support is formed at level A, comprising the end plugs 178 at level A and a dual cover plate retainer 238. As shown in the top plan view of FIG. 28, dual cover plate retainer 238 is generally triangular, having two substantially straight sides 240 converging at 90.degree., each straight side 240 adapted to abut the end faces 134 of posts 1b and 1c, and a third, convex side 241. As shown in side elevation FIG. 29, each straight side 240 has a downwardly extending vertical snap connector 242 which is preferably identical to that shown in FIG. 23 and is preferably connected to the cover plate retainer 238 in the same manner as shown in FIG. 23. The vertical snap connector 242 preferably has two downwardly extending legs 244 and is adapted to snap into engagement with an end plug 178 by insertion of the legs 244 of each snap connector 242 into a slot 198, as described above with reference to snap connector 210 of cover plate retainer 200.

The upper surface 246 of dual cover plate retainer 238 is provided with two bulbous plug connectors 248, each plug connector 248 extending along substantially the entire length of a straight side 240. These bulbous connectors 248 are preferably identical in shape and size to plug connector 204 described above.

Extending downwardly from the lower surface 250 of dual cover plate retainer 238 is a resilient spring connector 252 similar in shape to that shown in FIGS. 22 and 23. The spring connector 252 of dual cover plate retainer 238 extends along substantially the entire convex side 241 and preferably has the same convex shape as convex side 241.

Returning to FIG. 27, a cover plate support is provided at level B comprising three end plugs 178 and a triple cover plate retainer 256.

The triple cover plate retainer 256 is shown in the top plan view of FIG. 30 as having a generally square shape, with three substantially straight sides 258 and a fourth, concave side 260. As shown in FIG. 31, each of the straight sides 258 is provided with a vertical snap connector 262 having downwardly extending legs 264, vertical snap connector 262 preferably being identical to that shown in FIG. 23. The legs 264 of each snap connector 262 are inserted into a slot 198 between an end plug 178 and a post 1.

The triple cover plate retainer 256 has an upper surface 266 provided with three bulbous plug connectors 268, each extending along substantially the entire length of a straight side 258. The bulbous plug connectors 268 preferably have the same size and shape as bulbous plug connector 204. The triple cover plate retainer 256 has a lower surface 270 which is provided with a resilient spring connector 272 extending along substantially the entire length of concave side 260 and having the same concave shape as side 260.

At lowermost level C of FIG. 27, a cover plate support is formed from a triple cover plate retainer 256 and three end plugs 178, as in level B. However, in level C, the triple cover plate retainer 256 is reversed so that its vertical snap connectors 262 are directed upwardly and inserted into slots 198 formed by end plugs 178 so that the resilient spring connector 272 is extending upwardly. This is analogous to the reversing of single cover plate support 222a shown in FIG. 25a

FIG. 32 illustrates the partitions of FIG. 17 but with the assembled cover plate supports at levels A, B and C installed on partitions 232, 234 and 236.

To provide a decorative covering over the converging ends of partitions 234 and 236 between levels A and B, a double cover plate 276 is provided between the cover plate supports of level A and level B. The double cover plate 276 has a similar configuration to the single cover plate 224 shown in FIG. 25a, having a substantially convex, C-shaped transverse cross-section with wrap around corners 278. The double cover plate 276 is however wider than the single cover plate 224.

The double cover plate 276 is installed by first securing its lower end to the bulbous plug connectors 268 on the upper surface 266 of triple cover plate retainer 256 at level B. For convenience, the bulbous plug connectors 268 of triple cover plate retainer 256 at level B are labelled 268a, 268b and 268c in FIG. 32.

The double cover plate 276 slidingly engages only plug connectors 268b and 268c, the wrap around corners 278 of double cover plate 276 sliding down over and engaging end points P of plug connectors 268b and 268c, points P being shown in FIG. 30.

The remaining bulbous plug connector 268a on the upper surface 266 of triple cover plate retainer 256 does not engage a cover plate but rather provides a decorative transition between the triple cover plate retainer 256 and the top surface of partition 232, which may preferably be provided with a top cover plate (not shown) similar to that shown in FIG. 25a.

Then, in a similar fashion to single cover plate 224 shown in FIG. 25a, the upper end of double cover plate 276 is snapped into secure engagement with resilient spring connector 252 of dual cover plate retainer 238 at level A. The forward lip 254 of dual cover plate retainer 238 is preferably flush with the outer surface of installed double cover plate 276.

FIG. 32 also illustrates a triple cover plate 280 to be joined between the triple cover plate retainers 256 at levels B and C. Because the triple retainer 256 at intermediate level B has its resilient spring connector 272 directed downwardly and triple cover plate retainer 256 at lowermost level C has its resilient spring connector 272 directed upwardly, the upper and lower ends of triple cover plate 280 are simply snapped into secured engagement with the resilient spring connectors 272 of the triple cover plate retainers 256 at levels B and C, respectively. The triple cover plate 280 is secured in a similar manner as single cover plate 224a described above with reference to FIG. 25a.

Like single cover plate 224 and double cover plate 276, triple cover plate 280 has wrap around corners 282. However, unlike cover plates 224 and 276, triple cover plate 280 preferably has a concave shape so that it does not substantially extend out of the plane of partitions 232 and 236.

As in the case of cover plate retainers 200 and 238, triple cover plate retainer 256 has an outwardly extending lip 274 which, when the triple cover plate 280 is installed, is preferably flush with the outer surface of triple cover plate 280.

FIG. 33 illustrates the partitions of FIG. 32 but with the double cover plate 276 and triple cover plate 280 installed on the converging partitions 232, 234 and 236.

FIG. 34 illustrates part of a modular office furniture system in accordance with the invention comprising a plurality of rectangular, upright partitions wherein the ends of four partitions 284, 286, 288 and 290 of the present invention converge with the angle between adjacent partitions being 90.degree.. Partitions 284, 286, 288 and 290 have identical construction, comprising vertical, rectangular end posts 1 and a plurality of pairs of horizontal beams 2.

When four partitions meet as shown in FIG. 34, no vertical cover plates are used to cover the ends of the partitions since the ends of the panels 284, 286, 288 and 290 face toward one another. However, a quadruple horizontal cover plate 292 is provided to cover the top gap between the converging ends of the partitions 284, 286, 288 and 290.

In order to secure quadruple cover plate 292 to the ends of the converging partitions 284, 286, 288 and 290, end plugs 178 are first inserted in the open ends 172 of horizontal beams 2 as shown in FIG. 34 and as discussed above.

As shown in FIG. 34, the upper surface 294 of cover plate 292 is substantially square in shape, having four identical substantially straight sides 296, each of which abuts an end face 134 of a post 1 of a respective partition when cover plate 292 is installed. The upper surface 294 is provided with four bulbous plug connectors 298, each of which extends along substantially the entire length of a side 296. The bulbous plug connectors 298 are preferably identical in shape to the bulbous plug connector 204 described above.

The quadruple cover plate 292 is secured to end plugs 178 in an identical manner as that discussed above with reference to cover plate retainers 200, 238 and 256. Each side 296 of horizontal cover plate 292 is provided with a downwardly extending vertical snap connector 300 comprising two legs 302 which snap into engagement with the vertical slot 198 in an identical manner as that discussed above.

Reference is now made to FIGS. 35 and 36 which illustrate one type of preferred modular panel clip 314 according to the present invention useful for coupling cladding panels to a partition. Panel retaining clip 314 is secured between a pair of horizontal beams 2 by firstly, inserting panel clip 314 between beams 2 with its front surface 316 and its rear surface 318 (not shown) substantially parallel to beams 2, as shown in FIG. 35. Panel retaining clip 314 is then rotated by 90.degree. about vertical axis A, shown in FIG. 35, to adopt the orientation shown in FIG. 36, which shows panel retaining clip 314 securely engaged between two beams 2 with its front surface 316 facing end post 1 and transverse to the horizontal beams 2.

As seen in FIG. 35 each beam 2 of partition 304 has a substantially flat inward face 306, a substantially flat outward face 308 opposite the inward face 306, a smoothly rounded upper surface 310 and a smoothly rounded lower surface 312.

As shown in FIG. 36, side surfaces 320 of panel clip 314 form a tight friction fit with horizontal beams 2 to securely retain clip 314 in the position shown in FIG. 36. Side surfaces 320 each have an upper engaging portion 322 which engages the upper surface 310 of a beam 2, a side engaging portion 324 which engages the inward face 306 of a beam 2, and a lower engaging portion 326 which engages the lower surface 312 of a beam 2.

FIG. 36 shows panel clip 314 having a pair of upper resilient arms 328 extending outwardly above beams 2 adapted to securely retain a top cover plate 230, the same as top cover plate 230 shown in FIG. 25a. Top cover plate 230 has a generally C-shaped convex transverse cross-section with wrap around corners 332. Top cover plate 230 is installed by pressing it down over resilient arms 328 until tips 334 of resilient arms 328 snap into engagement with wraparound corners 332, becoming securely engaged therein. This is analogous to the securing of single cover plate 224 discussed above with reference to FIGS. 25a, 25b and 25c. To retain top cover plate 230 in place on top of partition 304, it is to be understood that at least two panel retaining clips 314 must be provided, one clip 314 preferably positioned proximate each end of a pair of beams 2.

FIG. 36 also shows panel clip 314 as having a pair of lower legs 336, each extending under and outwardly of a beam 2. These lower legs 336 function to retain a cladding panel, as more fully discussed below.

As shown in FIG. 37, panel clip 314 preferably comprises an upper section 338 and a lower section 340, which may preferably be easily connected and disconnected. The provision of separate, connectable sections enhances the modularity of panel clips of the present invention. Different sections can be joined together to build panel clips having various functions.

Sections 338 and 340 have respective flat vertical mating surfaces 342 and 344 adapted to abut one another, with upper horizontal mating ledge 346 and lower horizontal mating ledge 348 of upper section 338 abutting upper horizontal mating ledge 350 and lower horizontal mating ledge 352 of lower section 340, respectively.

To retain upper section 338 and lower section 340 against movement relative to one another when they are connected, a key 354 is provided on upper section 338 which is closely received in keyhole 356 in lower section 340.

FIG. 38 illustrates a side perspective view of a partition 358 according to the present invention, partition 358 being joined end to end with another partition 359, preferably in the manner discussed above with reference to FIGS. 15 and 16.

FIG. 39 is a schematic cross-sectional end view through partition 358 along line 39--39 in FIG. 38. Partition 358 comprises end posts 1 and four pairs of horizontal beams 2. FIG. 39 illustrates five different configurations of clips adapted to secure different elements to the partition. These five clips are from top to bottom:

clip 360 between beams 2a;

clip 370 between beams 2b;

clip 390 secured to inner faces of the posts 1;

clip 410 secured between beams 2c; and

clip 422 secured between beams 2d.

Each of the clips are formed from two sections snap fitted together in the same manner as the clip 314 shown in FIG. 37, however with different sections which have different purposes as will become apparent.

Secured to the uppermost pair of beams 2a of partition 358 is a first panel retaining clip 360 having an upper section 338 identical to that shown in FIG. 37 with upwardly extending resilient arms 328 to retain a top cover plate 330 (not shown). Lower section 362 of clip 360 is adapted to retain an upper end of a pane of glass 364, having a slot 366 in which glass 364 is received.

The second panel retaining clip 370 retained between horizontal beams 2b comprises an upper section 372 and lower section 340. The upper section 372 retains the lower end of pane of glass 364 in slot 374 identical to slot 366 in lower section 362 of clip 360. The lower section 340 of clip 370 is identical to the lower section 340 of panel clip 314 shown in FIG. 37. The lower section 340 has lower legs 336 adapted to engage and retain the upper end of a cladding panel as is described below.

As shown in FIGS. 38 and 39, two decorative sashes 368, each of which is an elongate, thin sheet-like cover member, are provided at the upper and lower edges of glass 364 to conceal the clips 360 and 370 and cover the gap between the pairs of beams 2a and 2b, respectively. As shown in FIG. 38, sash 368 preferably extends into and is retained in snap fit in slots 366 and 374 of clips 360 and 370, respectively.

The third panel retaining clip 390 is shown in FIG. 39 as being located between pairs of beams 2b and 2c to secure the lower end of a cladding panel and the upper end of a cladding panel as described below. This panel clip 390 is shown in isolation in FIG. 40. Like panel clip 314, clip 390 may comprise separate upper and lower sections which are snap fitted together. Panel clip 390 is not retained between a pair of horizontal beams 2 and therefore does not have a side surface shaped to secure the retaining clip 390 between a pair of beams 2. Rather, retaining clip 390 has a hole 392 through which a screw (not shown) may preferably be provided to secure panel clip 390 to the inner face of a vertical post, such as an end post 1. Clip 390 has an upper section 391 and a lower section 393. The upper section 391 is adapted to engage a lower end of a cladding panel as is described later. The lower section has a head 394 and a pair of outwardly and upwardly extending arms 396. A downwardly inclined slot 398 is formed between head 394 and each arm 396. The lower section 393 has legs 402 adapted to engage the upper end of a cladding panel.

Clip 410 between beams 2c has an upper section 395 having a head 394 and arms 396 identical to those of upper section 391 of clip 390 adapted to receive the lower end of a cladding panel. Clip 410 has a lower section 397 having lower legs 336 identical to those of lower section 340 of clip 370 and adapted to receive an upper end of a cladding panel.

Clip 422 between beams 2d has an upper section 399 having a head 394 and arms 396 identical to those of upper section 391 of clip 390 and adapted to receive a lower end of a cladding panel. Clip 422 has a lower section 411 specialized for coupling between the post 1 and a cast metal body 4a carrying adjustable legs 4. The clip 422 is not retained in place only by beams 2d. Rather, it is provided with a slot 432 which fits over cast metal body 4a between threaded shaft 4d and upper flange 4c, shown in FIG. 3.

The securement of the cladding panels to the partition through use of the clips in now described with reference to FIG. 39. FIG. 39 shows two cladding panels 5b and 5 similar to the cladding panels shown in FIG. 1. Each cladding panel 5b, 5 carries on its rear surface two vertically extending coupling brackets 401, one located near each end of the panel and adapted for releasable engagement with two correspondingly spaced clips carried on the partition.

For example, cladding panel 5 is shown in FIG. 39 as extending between lowest clip 422 and clip 410 with the coupling bracket 401 of the panel 5 engaging the upper section 399 of clip 422 and the lower section 397 of clip 410.

As shown, the bracket 401 has near its lower end a downwardly extending leg 400 which is adapted to fit into slot 398 between head 394 and an arm 396 on the upper section 399 of clip 422. The bracket 401 has near its upper end a resilient arm 384 which extends rearwardly below a slot 378 having an upper wall 380 and a lower wall 382. The arm 384 ends at an upwardly extending tip 386. The arm 384 is adapted to snap engage under lower legs 336 on the lower section 397 of clip 410 when the legs 336 are received in slot 378.

Both panels 5 and 5b shown in FIG. 39 have similar coupling brackets 401 and each is adapted to be releasably coupled by engagement with similar slots 398 and legs 336 carried on different of the clips. Panel 5 is shown in FIG. 39 in a position secured to the partition. Panel 5b is shown in an intermediate position ready to either be removed or secured. As seen, the leg 400 on the bracket 401 of panel 5b is received in slot 398, with the leg 400 engaging head 394 of the upper section 391 of clip 390 so that the panel 5b is retained in this intermediate position. From this position the panel 5b can be snapped into engagement by pushing its upper end towards the partition to snap arm 384 under leg 336 of clip 370. Alternatively, from this position the panel 5b can be removed by lifting upwardly. While not shown in FIG. 39, another panel 5a as shown in FIG. 1 may be provided with its bracket 401 to be coupled to the upper section 395 of clip 410 and the lower section 393 of clip 390 in the same manner as panels 5 and 5b.

FIG. 39 illustrates a system for coupling of recessed panel 7 utilizing clip 390 which has a specialized lower section 393 to engage the upper end of panel 7 as follows. The lower section 393 of clip 390 has forwardly and rearwardly pivotable legs 402. Left leg 402a shown in FIG. 39 is pivoted forwardly and right leg 402b is shown as being unpivoted, or vertical. Finger tabs 403 are preferably provided on each leg 402 to allow legs 402 to be gripped for pivoting. When the legs 402 are vertical, a narrow slot 404 is formed between the leg 402 and the side surface 406 of clip 390. This narrow slot 404 is adapted to receive the upper end of recessed cladding panel 7 in a tight friction fit.

The upper end of cladding panel 7 is inserted into slot 404 as follows. One leg 402 of clip 390 is pivoted away from its vertical position and the upper end of cladding panel 7 is pushed upwardly against the side surface 406 of clip 390, preferably until it abuts end wall 408. When the cladding panel 7 is in this position, leg 402 is pivoted back to its vertical position to securely retain the upper end of cladding panel 7 in slot 404.

Reference is now made to FIG. 41, which shows an alternate cladding panel 434 which may act as a replacement for panels such as 5. Panel 434 is a simplified panel comprising a thin sheet of metal which hangs from an uppermost pair of horizontal beams 2a of a partition 436 to the next pair of beams 2b, to provide an economical, simple cladding panel. The upper end 438 of cladding panel 434 is shaped to hook over the upper surface 310 of a beam 2a and also has a horizontal tip 440 extending inwardly between pair of beams 2a. When two such panels 434 are installed on opposite sides of partition 436, as shown in FIG. 41, tips 440 meet between beams 2a to provide a top covering for partition 436.

Cladding panel 434 preferably extends downwardly proximate the plane of the outward faces 308 of the horizontal beams 2a to the lower pair of beams 2b. Cladding panel 434 preferably has an inwardly extending lower end 442 which engages the outward face 308 of a beam 2b.

Cladding panel 434 is preferably made from an inexpensive material such as sheet metal, which may preferably be perforated to provide a decorative appearance. Although FIGS. 20 to 34 illustrate end covering systems for partitions having pairs of horizontal beams, it is to be appreciated that similar end covering systems may be provided for partitions not having pairs of horizontal beams as shown in FIGS. 20 to 34. For example, an end covering system may be provided wherein cover plate retainers, similar to those shown in FIGS. 20 to 34, are secured directly to the end faces of the end posts of the partitions, for example, by screws. Such a system would not require end plugs such as end plugs 178 shown in FIGS. 20 to 34 and could be used in a partition not having pairs of horizontal beams. The cover plate retainers directly attached to the end posts would preferably have bulbous plug connectors and resilient spring connectors as shown in FIGS. 20 to 34 and would preferably secure the cover plates in an identical manner as that shown in FIGS. 20 to 34.

Although FIG. 1 illustrates a partition having a simplified decorative end covering, it is to be understood that a decorative end covering such as that shown in FIGS. 25 and 38 could be provided on the partition shown in FIG. 1.

Although the invention has been described in connection with certain preferred embodiments, it is not intended that it be limited thereto. Rather, it is intended that the invention cover all alternate embodiments as may be within the scope of the following claims.