US 4,635,998 AGrant
Fold-Away Chair
Issue Date:1987-01-13
•1 Claims
•2 Drawing Sheets
Abstract
A fold-away chair capable of being pivoted from a position of use to a fully collapsed position. The chair has a combined seat bottom and a rear leg assembly, a seat back assembly, a pair of front legs, a pair of arm rests, and levers to facilitate folding. The combined seat bottom and rear leg assembly comprises a pair of laterally spaced side rails having a transverse load-bearing member at the front ends. When the chair is in its position of use, this load-bearing member bears upon a transverse load-bearing member connecting the front legs. Pins connect the front legs to the forward ends of the side rails to lock the chair in its position of use. When these pins are removed, the chair may be folded to collapsed position.
Metadata
Assignee
- Willsboro Wood Products
Inventor
- William S. Hickey
Application Information
Application Number:US 7915217
Filing Date:1985-10-25
Priority Date:1985-10-25
Art Unit:357
Classifications
IPC:
A47C 400
Field of Search:
29739;35;31
Patent Drawings (2 sheets)
Description
This invention relates generally to chairs and refers more particularly to a fold-away chair capable of being pivoted from a position of use to a collapsed position.
Summary of the Invention
The fold-away chair of this invention comprises a combined seat bottom and rear leg assembly, a seat back, front legs, a pair of arm rests, and a pair of levers to facilitate folding.
The combined seat bottom and rear leg assembly comprises laterally spaced side rails having front seat bottom portions and rear leg portions with seating connecting the front seat bottom portions. A transverse load-bearing member connects the front ends of the front seat bottom portions of the rails.
The front legs are pivoted to the front ends of the seat bottom portions of the side rails. A second load-bearing member connects the front legs.
The seat back has upper and lower transverse bars. The rear ends of the arm rests are pivoted to the upper transverse bar. The front ends of the arm rests are pivoted to the upper ends of the front legs.
The levers are pivoted to the ends of the lower transverse bar of the seat back and also to the rear leg portions of the side rails.
When the chair is in its position of use with its front legs substantially vertical, the load-bearing member carried by the side rails bears upon the load-bearing member carried by the front legs, and the lower transverse bar of the seat back bears upon the rear leg portions of the side rails. The chair can be folded to a collapsed position in which the front legs are substantially horizontal and extend parallel to the side rails.
Other objects and features of the invention will become more apparent as the following description proceeds, especially when considered with the accompanying drawings.
Brief Description of the Drawings
FIG. 1 is a perspective view of a chair constructed in accordance with the invention and shown in its position of use.
FIG. 2 is a side elevational view of the chair shown in FIG. 1.
FIG. 3 is a top plan view.
FIG. 4 is a fragmentary front elevational view.
FIG. 5 is a side elevational view showing the chair in a partially folded position in solid lines, and showing it folded further towards collapsed position in broken lines. The seat back is also shown in the position of use in dot-dash lines.
FIG. 6 is a side elevational view of the chair shown fully collapsed.
FIG. 7 is a top plan view of the chair as it appears in its collapsed position.
Detailed Description
Referring now more particularly to the drawings, the chair comprises a combined seat bottom and leg assembly 10, a seat back assembly 12, a front leg assembly 14, a pair of arm rests 16 and 18, and a lever assembly 20.
The combined seat bottom and rear leg assembly 10 comprises a pair of laterally spaced parallel side rails 22 and 24. Rails 22 and 24 are flat board-like members. When the chair is supported on a horizontal surface in its position of use shown in FIGS. 1 and 2, the rails are disposed in vertical planes and are inclined downwardly from the front ends to the rear ends where they contact the supporting surface. The rear leg portions 26 of the rails extend from the rear ends to about the mid point of the rails and the front seat bottom portions 28 extend from about the mid point to the front ends of the rails. A plurality of spaced transverse slats 30 are secured to the upper edges of the front seat bottom portions 28 of the rails to connect the rails together and to provide a supporting seat for the chair occupant. A transverse load-bearing member 32 extends across the front of the chair and connects the front ends of the front seat bottom portions 28 of the side rails. This transverse load-bearing member 32 is a flat plate like member which is disposed in a vertical plane when the chair is supported on a horizontal surface in its position of use.
The front leg assembly 14 comprises a pair of laterally spaced parallel front legs 34 and 36. These front legs 34 and 36 are disposed vertically when the chair is supported on a horizontal surface in its position of use. Pivots 38 provided by nut and bolt assemblies connect the front legs near the midpoint of their lengths to the front ends of the seat bottom portions 28 of the rails 22 and 24. These pivots 38 extend transversely of the chair and are disposed on a common horizontal axis. A transverse load-bearing member or bar 40 connects the front legs 34 and 36 just below the mid points in the length thereof. In the position of use of the chair, the load-supporting bar 40 of the front leg assembly 14 is directly beneath the load-bearing member 32 across front of the side rails so that the load-bearing member 32 engages and bears upon the load-bearing bar 40 to transmit the weight of the person occupying the chair to the legs. It will be noted that the load-bearing member 32 is recessed where indicated at 42 to provide finger clearance when either folding the chair to its position of use or to its collapsed position.
The seat back assembly 12 comprises a plurality of laterally spaced longitudinal slats 44 connected near the midpoint by a transverse bar 46. The longitudinal slats are also connected near their lower ends by a transverse bar 48 and near the upper ends by a transverse bar 50.
The arm rests 16 and 18 are in the form of elongated flat board-like members which extend parallel to one another and, in the position of use of the chair when supported on a horizontal surface, extend generally horizontally or perhaps with a slight downward and rearward slope. An elongated rib 54 extends lengthwise of each arm rest, being secured to the under surface thereof. A transverse rib 56 is also secured to the under surface of each arm rest in a position spaced slightly forwardly of the rib 54 to provide a space or slot 58. Each leg 34, 36 has a laterally outwardly extending plate or rib 60 secured to the upper end portion thereof which fits into the slot 58 of the arm rest to stabilize the chair when it is in the upright position of use.
The rear ends of the arm rests are pivoted to the seat back assembly 12 by means of aligned transverse pins 61 connecting the ribs 54 to the ends of the transverse bar 46. The front ends of the arm rests are pivoted to the front leg assembly by means of aligned transverse pins 62 connecting the upper ends of the legs 34 and 36 to the front ends of the rib 54 of the arm rests.
The lever assembly 20 comprises a pair of parallel levers 64 and 66. The levers are pivoted at 67 at one end to the ends of the lower transverse bar 48 of the seat back assembly, and are pivoted at 69 at the opposite ends to the rear leg portions 26 of the side rails at about the mid-point in the length thereof.
Pins 70 extend through the front legs 34 and 36 near the pivots 38 and into the front ends of the seat bottom portions 28 of the side rails to lock the chair in its position of use shown in FIGS. 1 and 2. These pins are removable and when removed permit the chair to be folded to its collapsed position.
The construction of the chair and the arrangement and relationship of the pivots 38, 61, 62, 67 and 69 is such that in the position of use of the chair on a horizontal surface shown in FIGS. 1 and 2, the levers 64 extend in a forwardly and upwardly direction and the seat back 12 extends upwardly and rearwardly with its lower transverse bar 48 engaging and bearing upon the rear leg portions 26 of the side rails 22 and 24 near the front seat bottom portions 28 thereof.
In order to fold the chair from its position of use to the fully collapsed position of FIGS. 6 and 7, the upper part of the seat back assembly 12 may be grasped and a foot placed upon one of the rear leg portions 26 near the point where it engages the ground or supporting surface. Then by pushing forwardly, the seat back assembly 12 may be moved to an intermediate vertical position, during which time the chair will move towards a partially folded condition as seen in solid lines in FIG. 5. In this intermediate position, the transverse bar 48 at the lower end of the seat back assembly 12 is still in engagement with and bears upon the rear leg portions 26 of the side rails. Continued forward pressure on the seat back assembly 12 causes the chair to fold to a fully collapsed position shown in FIGS. 6 and 7, during which time the levers 64 and 66 swing to the vertical position shown in broken lines in FIG. 5 and continue swinging to the upwardly and rearwardly extending position of FIG. 6 in the fully collapsed position. When the chair is fully collapsed, the front legs 34 and 36 are substantially paralled to the side rails 22 and 24. A person may find that when collapsing the chair, it may be helpful at the same time to grasp the front of the seat bottom portion. Clearance 42 for the fingers makes it easy to grasp the front of the chair in this manner. The chair can be easily unfolded and returned to its position of use by a reverse swinging of the seat back assembly 12.
Claims
I claim:
1. A fold-away chair adapted to be pivoted from a position of use to a collapsed position, comprising a combined seat bottom and rear leg assembly, a seat back assembly, a front leg assembly, a pair of arm rests, and a lever assembly to facilitate folding, said combined seat bottom and rear leg assembly comprising laterally spaced side rails having front seat bottom portions and rear leg portions, transverse slats connecting the front seat bottom portions of said side rails, a first transverse load-bearing member connecting the front ends of the front seat bottom portions of said side rails, said front leg assembly comprising laterally spaced front legs, first means pivoting said front legs near their midpoints to the front ends of the seat bottom portions of said side rails, a second transverse load-bearing member connecting said front legs beneath said first pivot means, said seat back assembly comprising longitudinal slats connected near their midpoints by an upper transverse bar and connected near their lower ends by a lower transverse bar, each arm rest having an elongated rib secured to the underside thereof and extending lengthwise thereof from a point near the rear end of said arm rest to a point short of the front end thereof, each arm rest having a second rib secured to the underside thereof spaced forwardly of the front end of said elongated rib to define a transverse slot, each front leg having a transverse plate at the upper end thereof, second means pivoting the rear ends of the longitudinal ribs of said arm rests to said upper transverse bar of said seat back assembly and third means pivoting the front ends of said longitudinal ribs to the upper ends of said respective front legs, said lever assembly comprising a pair of levers, fourth means pivoting one end of said levers to the ends of said lower transverse bar of said seat back assembly, fifth means pivoting the other ends of said levers to the rear leg portions of said side rails between the ends thereof, releasable pins engaging said front legs and the front ends of the seat bottom portions of said rails to lock said chair in its position of use in which, when said chair is supported on a horizontal surface, said front legs are substantially vertical and their transverse plates extend into said transverse slots, said combined seat bottom and rear leg assembly slopes downwardly from front to rear, said first load-bearing member bears upon said second load-bearing member at a point well below said transverse slats of said combined seat bottom and rear leg assembly, and said lower transverse bar of said seat back assembly bears upon the rear leg portions of said side rails, said chair being foldable when said pins are released to a collapsed position in which, when said chair is supported on a horizontal surface, said front legs are substantially horizontal and extend generally parallel to said side rails.
Patent Citations (9)
| Patent | Date | Inventor | Cited By |
|---|---|---|---|
| US1896455 | 1933-02-01 | McCulloh | |
| US2222296 | 1940-11-01 | Luiken | |
| US2468491 | 1949-04-01 | Dorschner | |
| US2490884 | 1949-12-01 | Rau | |
| US2600626 | 1952-06-01 | Ellingson | |
| US2650652 | 1953-09-01 | Watson | |
| CAX1089750 | 1980-11-01 | ||
| FRX999695 | 1951-10-01 | ||
| GBX500634 | 1939-02-01 |