Claims
- 1. A back support assembly for a wheelchair having a spaced pair of canes, said back support assembly comprising a pair of cane clamps and a back support which has a right side and a left side each independently attached to an upper and lower adjusting bracket together joined to a mounting arm having a spaced pair of C-shaped recesses that each receive one of a pair of mounting posts projecting inwardly from a cane bracket that along with a cane collar forms one of said cane clamps, and wherein the position of the mounting posts relative the a plane defined by the pair of canes can be varied, and the mounting arm further includes a releasable lock which secures the mounting arm on the mounting posts.
- 2. A back support assembly as set forth in claim 1 wherein the back support comprises upper and lower rigid back shells each of which include upholstery.
- 3. A back support assembly as set forth in claim 2 wherein the upper and lower rigid back shells are joined to each other by a hinged connection.
- 4. A back support assembly as set forth in claim 3 wherein the hinged connection is a locking connection so that the relative angle of the shell can be locked at a desired angle.
- 5. A back support as assembly set forth in claim 3 wherein the hinged connection is a resilient hinged connection so that the shells are able to flex relative to each other.
- 6. A back support assembly as set forth in claim 1 wherein the position of the cane brackets can be varied with respect to the plane defined by the pair of canes to define the seat depth.
- 7. A back support assembly as set forth in claim 6 wherein the cane bracket is joined to the cane collar by a sliding connection.
- 8. A back support assembly as set forth in claim 7 wherein the sliding connection is a dovetail connection.
- 9. A back support assembly as set forth in claim 1 wherein the position of the one of the two mounting posts can be varied in the cane bracket so as to change the angle of incline of the back support.
- 10. A back support assembly as set forth in claim 1 wherein each mounting arm includes a locking pawl which secures one of said mounting posts in a mounting recess.
- 11. A back support assembly as set forth in claim 10 where a unitary trigger simultaneously engages both of the locking pawls to enable the back support to be removed from the cane clamps.
- 12. A back support as set forth in claim 2 wherein a back shell includes a cut out hand hold.
Parent Case Info
[0001] This patent application is based upon U.S. Provisional Application Serial No., 60/330,261, Filed Oct. 18, 2001.
[0002] The invention relates generally to back supports for use on wheelchairs, and more particularly to a back support which is adjustable independently with respect to seat depth, seat width, the back height above the seat, and the angle of incline with respect to a plane defined by the wheel chair canes to which the back support is mounted. This back support has a convenient release mechanism that permits the back support assembly to be removed from the mounting hardware so that the wheelchair can be folded for transport, or storage. The back is easily remounted on the mounting hardware without having to reset the various modes of adjustment.
Provisional Applications (1)
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Number |
Date |
Country |
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60330261 |
Oct 2001 |
US |