US 8,602,163 B2Grant
Ladder safety apparatus
Issue Date:2013-12-10
•12 Claims
•9 Drawing Sheets
Abstract
A ladder safety apparatus and methods of using the same are disclosed. An example ladder safety apparatus includes a stabilizer bar for a top portion of a ladder, the stabilizer bar configured to rest on a roof top. The ladder safety apparatus also includes a balance rail for the top portion of the ladder to provide handles for a user climbing onto the roof top. The ladder safety apparatus also includes an attached strap to connect adjacent the roof top for securing the ladder.
Metadata
Inventor
- Don M. Davis, Jr.
Application Information
Application Number:US 13/223,261
Filing Date:2011-08-31
Priority Date:2010-12-23
Art Unit:3634
Classifications
IPC:
E06C7/18
Patent Drawings (9 sheets)
Description
Priority Claim
[0001] This application claims priority to U.S. Provisional Patent Application No. 61/426,876 titled “Ladder Rooftop Safety Apparatus” of Don Morris Davis Jr., filed on Dec. 23, 2010.
Background
[0002] Individuals often use ladders to access high or steep roof areas. Ascending and descending the ladder can be dangerous, particularly with conventional ladders which may be unstable and limited by the amount of weight these ladders can handle.
[0003] For example, if the top portion of the ladder is not extended high enough past the edge of the roof, the ladder may become disengaged from the side edge of the roof (or fascia). In addition, leaning the ladder on the fascia or gutters may cause scratching of the fascia and/or gutters as the user climbs the ladder.
[0004] Extending the top portion of the ladder past the edge of the roof can pose an additional safety concern, because the user has to dismount the ladder onto the roof top by climbing up and over the top portion of the ladder, or going around on the side of the top portion of the ladder.
[0005] In addition, if the user does not have a helper to hold and steady the ladder while the user is climbing, the ladder can slide sideways and endanger the safety of the user climbing on the ladder. Traditional ladders may also pivot at the point of contact with the ground and/or “kick” the bottom of the ladder out, causing the ladder to be unstable.
Brief Description of the Drawings
[0006] FIG. 1 is a perspective view of an example ladder safety apparatus as it may be attached to a top portion of a ladder.
[0007] FIG. 2 is an illustration showing the example ladder safety apparatus as it may be used on a roof top.
[0008] FIG. 3 is a perspective view of the example adjustable ladder safety apparatus as it may be adjusted.
[0009] FIG. 4 is a perspective view of another example adjustable ladder safety apparatus.
[0010] FIG. 5 is a side view of an example rotator cuff which may be used to adjust an angle of rotation of a balance rail for a ladder safety apparatus.
[0011] FIG. 6 a-d show further examples of the ladder safety apparatus.
Detailed Description
[0012] Many individuals do jobs where the individual has to access a high or steep roof top, and then descend after the job is complete. Conventional ladders tend to be unsafe and unstable, and are also limited by the weight these ladders can handle. The top portion of the ladder that extends past the edge of the roof top can be a particular safety concern. If the ladder begins to sway, it is possible that the individual could fall and be seriously injured or worse. It is not always possible to have another individual steady the ladder while the user climbs on the ladder. Even if someone tried to steady the ladder, the ladder can still slide due to leveraging effects.
[0013] The ladder safety apparatus disclosed herein provides users with an easier and safer method for accessing a roof top. The apparatus may be used by homeowners and professionals who use ladders to climb onto step or high roofs. For example, roofers, inspectors, insurance adjusters, and contractors all use extension ladders on a regular basis.
[0014] The ladder safety apparatus disclosed herein helps the user climb safely up the ladder onto the roof top, and then descend. The ladder safety apparatus affords stability, reducing the ladder from moving, and provides hand rails for the user.
[0015] Before continuing, it is noted that as used herein, the terms “includes” and “including” mean, but is not limited to, “includes” or “including” and “includes at least” or “including at least.” The term “based on” means “based on” and “based at least in part on.”
[0016] FIG. 1 is a perspective view of an example ladder safety apparatus 10 as it may be attached to a top portion 12 of a ladder 14. The ladder safety apparatus 10 may be made of aluminum or fiberglass or other material which is sufficiently lightweight to be used in the ladder environment, but sufficiently strong to provide the desired support.
[0017] The ladder safety apparatus 10 may include a stabilizer bar 16 for the top portion 12 of the ladder 14. The stabilizer bar 16 is configured to rest on a roof top (see, e.g., FIG. 2 ). In an example. The stabilizer bar 16 may be about 16 inches or less (at least the width of the ladder) to 48 inches wide (or more, based on application). However, the exact specifications may vary based on design considerations.
[0018] A balance rail 18 extends up above the top portion 12 of the ladder 14 and provides handles 20 for a user climbing onto the roof top. An opening is formed between the handles 20 so that the user can climb between the handles and onto the rooftop, without having to climb up and over or around the top portion 12 of the ladder 14.
[0019] The stabilizer bar 16 can be removably mounted to the ladder 14. In an example, U-clamps may be used to fasten the stabilizer bar to the ladder 14. Other examples are also contemplated, including semi-permanent and more permanent attachments. The stabilizer bar may extend substantially perpendicular from the ladder, although this not required in other embodiments where different angles are desired. The balance rail 18 can be formed as part of, or mounted to the stabilizer bar 16.
[0020] It is noted that the stabilizer bar 16 and the balance rail 18 may be attachable/detachable to the ladder. In another example, the stabilizer bar 16 and the balance rail 18 may be permanently attached to the ladder.
[0021] The stabilizer bar 16 may include footings 22a and 22b. The balance rail 18 may also include footings 24a and 24b. The footings may be configured to substantially conform to a portion of the roof top. For example, the footings may be made of a pliable material, such as rubber. Soft materials can also reduce or altogether prevent damage to the roof top. The footings may also provide better traction on wet or slippery roof tops.
[0022] The ladder safety apparatus 10 may also include an attached strap 26 to connect adjacent the roof top for securing the ladder. The attached strap 26 may be permanently connected to the ladder safety apparatus 10 so that the attached strap 26 does not get lost, or left behind on the ground when the user climbs up the ladder 14. In an example, the attached strap 26 may be a flexible cord and may include a hook for connecting to the fascia and/or gutter.
[0023] FIG. 2 is an illustration showing the example ladder safety apparatus 10 as it may be used on a roof top 28. It can be seen in FIG. 2 that the stabilizer bar 16 and the balance rail 18 are configured to maintain the ladder separated and apart from the roof top 28, gutters 30, and fascia 32 without touching the gutters 30 and the fascia 32. For example, the stabilizer bar 16 and the balance rail 18 each have two legs that contact the roof top 28, thus maintaining the edge of the ladder 14 away from the edge of the roof top 28.
[0024] FIG. 3 is a perspective view of the example ladder safety apparatus 10 as it may be adjusted. FIG. 3 shows various adjustments which can be made. For example, the ladder safety apparatus 10 may include extensions 34 for the balance rails 18. The extensions 34 may be telescoped in and out of balance rails 18 in the direction illustrated by arrow 35 to adjust the handrail for contact with different slope roof tops and also accommodate the angle of the ladder 14 relative to the ground.
[0025] The ladder safety apparatus 10 may also include extensions 36 for the balance rail 18. The extensions 36 may be telescoped in and out of the balance rails 18 in the direction illustrated by arrow 37 to adjust a height of the balance rail 18 above the top portion 12 of the ladder 14. It is noted that both handrails may include telescoping extensions 34 and 36, although only one of each of the extensions 34 and 36 is shown telescoping in FIG. 3 .
[0026] Before continuing, it is noted that the telescoping extensions described herein may include pin holes and pins. For example, the pin 38 may be removed from pin hole 40 so that the balance rail 18 can be raised and lowered. When the balance, rail 18 is located at the desired height, the pin 38 can be reinserted through the pin hole 40. A cotter pin 42 may be used to secure the pin 38. Other embodiments are also contemplated. For example, the pin 38 may be threaded and a nut may be attached to the pin 38. Or the pin hole 40 may be threaded. Spring-based pins (e.g., provided inside the extensions) may also be used, wherein the spring-based pins are pushed in to allow the balance rail 18 to move up and down, and then the spring-based pins automatically expand into the pin hole 40 for securement. Yet other embodiments may also be employed.
[0027] The stabilizer bar 16 may include extensions 44 to adjust distance between the ladder 14 and the roof top. The extensions 44 may be telescoped in and out of the stabilizer bars 16 in the direction illustrated by arrow 45 to adjust the distance.
[0028] The stabilizer bar 16 may also be configured with an adjustable width. In an example, pin 46a may be removed from the corresponding pin hole so that the stabilizer bar 16 can be pulled apart and pushed together in the direction illustrated by arrow 47a. In another example, pin may be removed from the corresponding pin hole 46b so that the end of the stabilizer bar 16 can be pulled apart and pushed together in the direction illustrated by arrow 47b.
[0029] It is noted that both end portions of the stabilizer bar 16 may include telescoping extensions, although only one of each of the extensions is shown telescoping in FIG. 3 .
[0030] FIG. 4 is a perspective view of another example adjustable ladder safety apparatus 10′. In this example, the stabilizer bar 16′ is rotatable relative to the ladder 14′ to adjust an angle of the stabilizer bar 16′ for different slope roofs. For example, the stabilizer bar 16′ may include at least a portion which is tube-shaped so that the footing 24′ can be rotated in the directions illustrated by arrow 48′. Multiple pin holes 50 may be provided so that the end of the stabilizer bar 16′ can be secured at the desired angle.
[0031] FIG. 5 is a side view of an example rotator cuff 51 which may be used to adjust an angle of rotation (e.g., in the direction of arrow 52) of a balance rail 18″ for a ladder safety apparatus. The rotator cuff 51 may be used to adjust an angle of the balance rail 18″ for different slope roofs. The pin and pin hole configuration is also illustrated in FIG. 5 , for locking the end portion of the balance rail 18″ in different positions. For example, the end portion of the balance rail 18″ is shown in a first position 54, and it can also be seen two other positions 54a and 54b which the end portion can be moved to and locked in place. Other locking mechanisms can also be used to maintain the end portion of the balance rail 18″ at the desired position.
[0032] It can be seen that the adjustable portions of the ladder safety apparatus 10 and 10′ enable a stabilizer bar having at least three degrees of freedom to rest on different types of roof tops. That is, the stabilizer bar can be adjusted in the direction of arrow 45 (FIG. 3 ), arrows 47a and 47b (FIG. 3 ), and rotated in the direction of arrow 48′ (FIG. 4 ).
[0033] It can also be seen that the adjustable portions of the ladder safety apparatus 10 and 10′ enable a balance rail with at least two degrees of freedom. That is, the balance rail can be adjusted in the direction of arrows 35 and 37 (FIG. 3 ), and rotated in the direction of arrow 52 (FIG. 5 ).
[0034] FIG. 6 a-d show further examples of the ladder safety apparatus. In The ladder safety apparatus 110 includes balance rails 118 with handles 120, and stabilizer bar 116. Other components may be similar to those already described above, and therefore the description of these components is not repeated here.
[0035] In the example shown in FIG. 6 a, the ladder safety apparatus 110 attaches to the ladder with attachment system 160, including telescoping arms 161a-b and 162a-b. Arms 161a and 162a are shown in a collapsed position so that the attachment system 160 may fit between adjacent rungs on the ladder. The arms may then be extended, as shown by arms 161b and 162b to fit securely between the adjacent ladder rungs, thereby securing the ladder safety apparatus to any desired position on the ladder. Once extended, arms 161b and 162b may be secured in any suitable manner, e.g., using the pin and hole locking mechanism illustrated in FIG. 6 a, or other suitable locking mechanism.
[0036] The example shown in FIG. 6 b is similar to that shown in FIG. 6 a, except that the arms 161a-b′ and 162a-b′ form a channel which can be fitted around the legs of the ladder for additional securement.
[0037] The example shown in FIG. 6 c is similar to that shown in FIGS. 6 a and 6b, except that the arms 161a-b″ and 162a-b″ are substantially L-shaped, and can be fitted on the legs of the ladder. In addition, the attachment system 160″ shown in FIG. 6 c includes U-clamps 165″ which can be used to connect the ladder safety apparatus 110″ to the ladder (instead of, or in addition to the pin securement shown in FIGS. 6 a and 6b).
[0038] FIG. 6 d shows a cross-sectional plan view taken from 170″ and looking down at the top of the attachment system 160″. The Figure illustrates an telescoping configuration wherein the arm 161a″ fits inside of the arm 162a″.
[0039] Before continuing, it should be noted that the examples described above are provided for purposes of illustration, and are not intended to be limiting. Other devices and/or device configurations will also be readily apparent to those having ordinary skill in the art after becoming familiar with the teachings herein.
[0040] A method of using the ladder safety apparatus discussed above may include adjusting a stabilizer bar on a ladder to rest the stabilizer bar on a roof top without the stabilizer bar and the ladder touching a gutter and fascia. The method may also include adjusting a balance rail for the top portion of the ladder to provide handles for a user climbing up the ladder to the roof top. The method may also include providing a strap to connect the ladder safety apparatus adjacent the roof top for securing the ladder.
[0041] The operations shown and described herein are provided to illustrate example implementations. It is noted that the operations are not limited to any particular ordering. Still other operations may also be implemented with the apparatus disclosed herein.
[0042] By way of illustration, further operations may include rotating the stabilizer bar relative to the ladder safety apparatus, extending legs from the stabilizer bar, and/or extending legs from the balance rail to adjust a height of the handles. In addition, a width of the stabilizer bar may be changed, wherein a width of the balance rail changes with changing width of the stabilizer bar.
[0043] It is noted that the examples shown and described are provided for purposes of illustration and are not intended to be limiting. Still other examples are also contemplated.
Claims
The invention claimed is:
1. A ladder safety apparatus comprising:
a stabilizer bar for a top portion of a ladder, the stabilizer bar having separate footings configured to receive downward pressure when resting with one footing on each side of the ladder on a roof top;
a balance rail for the top portion of the ladder to provide handles for a user ascending or descending the ladder, the balance rail having a first handle mounted on one end to a first side of the stabilizer bar and having a first footing on the other end of the first handle, the balance rail having a second handle mounted on one end to a second side of the stabilizer bar and having a second footing on the other end of the second handle, the first and second footing of the balance rail configured to receive downward pressure when resting on the roof top with one footing on each side of the ladder, wherein the stabilizer bar and the balance rail are attachable/detachable to the ladder using an attachment system, the attachment system including two telescoping arms movable independent of each other from a collapsed position so that the attachment system fits between adjacent rungs on the ladder, and the telescoping arms separately extend one at a time to fit securely between the adjacent rungs, thereby securing to any desired position on the ladder, wherein the telescoping arms are substantially rectangular in shape to match side rails of a ladder and include locking pins to maintain the telescoping arms in an extended position.
2. The apparatus of claim 1, wherein the stabilizer bar is configured to extend substantially perpendicular from the ladder when the apparatus is mounted on the ladder.
3. The apparatus of claim 1, wherein the separate footings, the first and second footings are configured to conform to a portion of the roof top and prevent the ladder from slipping on the roof top and marking the roof top.
4. The apparatus of claim 1, wherein the stabilizer bar and the balance rail are configured to maintain the ladder apart from the roof top, gutters, and fascia without touching the gutters and the fascia to prevent the ladder from scratching the gutters and fascia when the apparatus is mounted on the ladder.
5. The apparatus of claim 1, further comprising a slidably telescoping extension for each of the feet of the balance rail to adjust the handrail for contact with the roof top.
6. The apparatus of claim 1, further comprising a slidably telescoping extension for the balance rail to adjust a height of the balance rail.
7. The apparatus of claim 1, further comprising a rotator cuff to adjust an angle of the balance rail for different slope roofs.
8. The apparatus of claim 1, wherein the stabilizer bar rail has an adjustable width.
9. The apparatus of claim 1, further comprising an extension for the stabilizer bar to adjust distance between the ladder and the roof top.
10. The apparatus of claim 1, wherein the stabilizer bar is rotatable relative to the ladder to adjust an angle of the stabilizer rail for different slope roofs.
11. The apparatus of claim 1, wherein the stabilizer bar and the balance rail both include telescoping portions.
12. The apparatus of claim 1, wherein the stabilizer bar and the balance rail each have two legs.
Patent Citations (22)
| Patent | Date | Inventor | Cited By |
|---|---|---|---|
| US2881028(A) | 1959-04-01 | Baird | Examiner |
| US4061203(A) | 1977-12-01 | Spencer et al. | Applicant |
| US4359138(A) | 1982-11-01 | Kummerlin et al. | Examiner |
| US4502566(A) | 1985-03-01 | Wing | Examiner |
| US5121814(A) | 1992-06-01 | Southern | Examiner |
| US5131494(A) | 1992-07-01 | Heifetz | Examiner |
| US5242031(A) | 1993-09-01 | Ashley | Examiner |
| US5941343(A) | 1999-08-01 | Kelsey | Applicant |
| US6012546(A) | 2000-01-01 | Bee et al. | Examiner |
| US6394229(B1) | 2002-05-01 | Hastreiter | Applicant |
| US6533069(B1) | 2003-03-01 | Couillard | Examiner |
| US6745869(B2) | 2004-06-01 | Garrett | Examiner |
| US6851518(B1) | 2005-02-01 | Walker | Applicant |
| US7066299(B1) | 2006-06-01 | Fleming | Examiner |
| US7322442(B2) | 2008-01-01 | Clark et al. | Applicant |
| US8235175(B1) | 2012-08-01 | Feldhaus | Examiner |
| US2005/0023084(A1) | 2005-02-01 | Lazarus | Examiner |
| US2005/0211501(A1) | 2005-09-01 | Maiorano | Examiner |
| US2008/0190692(A1) | 2008-08-01 | Feik | Examiner |
| US2009/0000868(A1) | 2009-01-01 | Gaines | Examiner |
| US2010/0230208(A1) | 2010-09-01 | Hsiao et al. | Applicant |
| US2011/0247895(A1) | 2011-10-01 | Smith | Examiner |