Patent US3870362A successfully refreshed from Google Patents.
US3870362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tray attachment for wheelchairs
Assignee: RVL Industries Inc
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Filing: 1973-08-29
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Granted: 1975-03-11
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Expires: 1993-08-29
Abstract
Abstract A tray which may be attached to most standard wheelchairs is disclosed which would be used by invalids or elderly people wherein the tray is constructed so that it is movable between the utilization position and the stored position which is against one of the rear large diameter wheels of the wheelchair. The storable tray is pivotally mounted to a telescoping tube which is connected to the wheelchair. When stored, the tray is pivotally rotated to the side of the wheelchair in such a position that the drive wheel thereof can still be rotated by the occupant of the wheelchair.
Inventors
- 👤 Richard L Large
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:21
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32549
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
168 words
A wheelchair tray which is attached to the arm rest member of a wheelchair, said wheelchair including a pair of side frame members, each including an arm rest portion and drive wheels rotatably attached thereto, the wheelchair tray improvement comprising in combination: a mounting tube rigidly but removably connected to one of said side frames, said tube being substantially horizontal and having an open end toward the rear of said wheelchair, an extension tube slidably and rotatably positioned in said mounting tube through said open end for telescopic movement with respect thereto, said extension tube being terminated in a swivel portion, and a tray rotatably connected to said swivel portion of said extension tube, said tray having a recessed portion, said tray resting on said arm rest portion of said frame when in a utilization position and being rotated against the side Of said drive wheel and slid rearward to such position that the drive wheel is exposed so the occupant of the wheelchair can propel the wheelchair.
Claim 2
Dependent Claim
168 words
A wheelchair tray which is attached to the arm rest member of a wheelchair, said wheelchair including a pair of side frame members, each including an arm rest portion and drive wheels rotatably attached thereto, the wheelchair tray improvement comprising in combination: a mounting tube rigidly but removably connected to one of said side frames, said tube being substantially horizontal and having an open end toward the rear of said wheelchair, an extension tube slidably and rotatably positioned in said mounting tube through said open end for telescopic movement with respect thereto, said extension tube being terminated in a swivel portion, and a tray rotatably connected to said swivel portion of said extension tube, said tray having a recessed portion, said tray resting on said arm rest portion of said frame when in a utilization position and being rotated against the side Of said drive wheel and slid rearward to such position that the drive wheel is exposed so the occupant of the wheelchair can propel the wheelchair.
Claim 3
Dependent Claim
168 words
A wheelchair tray which is attached to the arm rest member of a wheelchair, said wheelchair including a pair of side frame members, each including an arm rest portion and drive wheels rotatably attached thereto, the wheelchair tray improvement comprising in combination: a mounting tube rigidly but removably connected to one of said side frames, said tube being substantially horizontal and having an open end toward the rear of said wheelchair, an extension tube slidably and rotatably positioned in said mounting tube through said open end for telescopic movement with respect thereto, said extension tube being terminated in a swivel portion, and a tray rotatably connected to said swivel portion of said extension tube, said tray having a recessed portion, said tray resting on said arm rest portion of said frame when in a utilization position and being rotated against the side Of said drive wheel and slid rearward to such position that the drive wheel is exposed so the occupant of the wheelchair can propel the wheelchair.
Claim 4
Dependent Claim
168 words
A wheelchair tray which is attached to the arm rest member of a wheelchair, said wheelchair including a pair of side frame members, each including an arm rest portion and drive wheels rotatably attached thereto, the wheelchair tray improvement comprising in combination: a mounting tube rigidly but removably connected to one of said side frames, said tube being substantially horizontal and having an open end toward the rear of said wheelchair, an extension tube slidably and rotatably positioned in said mounting tube through said open end for telescopic movement with respect thereto, said extension tube being terminated in a swivel portion, and a tray rotatably connected to said swivel portion of said extension tube, said tray having a recessed portion, said tray resting on said arm rest portion of said frame when in a utilization position and being rotated against the side Of said drive wheel and slid rearward to such position that the drive wheel is exposed so the occupant of the wheelchair can propel the wheelchair.
Claim 5
Dependent Claim
28 words
The wheelchair tray attachment of claim 1 further comprising means for limiting the rearward movement of said tray with respect to said wheelchair when in a stored position.
Claim 6
Dependent Claim
52 words
The wheelchair tray attachment of claim 2 wherein said means for limiting said rearward movement of said tray includes a plug means positioned in said mounting tube and means secured to said plug and said extension tube for permitting a predetermined movement of said extension tube with respect to said mounting tube.
Claim 7
Dependent Claim
257 words
A wheelchair tray which is attached to an arm rest member of a wheelchair, said wheelchair including a pair of side frame members, each side frame member including an arm rest portion, a rear drive wheel rotatably attached thereto and a castered front wheel rotatably and pivotably attached thereto, said wheelchair tray improvement comprising in combination: a mounting tube rigidly but removably connected to one of said side frame members, said tube being substantially horizontal and having an open end toward the rear of said wheelchair, an extension tube slidably and rotatably positioned in said mounting tube through said open end for telescopic movement with respect thereto, said extension tube being terminated in a swivel portion, a tray rotatably attached to said swivel portion of said extension tube, said tray having a recessed portion, said tray resting on said arm rest portions of said frame when in a utilization position, and being rotatable into a substantially vertical plane parallel to and spaced from one of said wheelchair side frame members when in a storage position, said tray being movable in a rearward direction of said wheelchair to said storage position so that said recess portion exposes said drive wheel for propulsion by the occupant of said wheelchair, and means for retaining said tray in a tilted position in said vertical plane so that said castered wheel is freely pivotable and so that said portion of said tray positioned to the rear of said wheelchair is flush with or forward of the rear periphery of the drive wheel.
Claim 8
Dependent Claim
257 words
A wheelchair tray which is attached to an arm rest member of a wheelchair, said wheelchair including a pair of side frame members, each side frame member including an arm rest portion, a rear drive wheel rotatably attached thereto and a castered front wheel rotatably and pivotably attached thereto, said wheelchair tray improvement comprising in combination: a mounting tube rigidly but removably connected to one of said side frame members, said tube being substantially horizontal and having an open end toward the rear of said wheelchair, an extension tube slidably and rotatably positioned in said mounting tube through said open end for telescopic movement with respect thereto, said extension tube being terminated in a swivel portion, a tray rotatably attached to said swivel portion of said extension tube, said tray having a recessed portion, said tray resting on said arm rest portions of said frame when in a utilization position, and being rotatable into a substantially vertical plane parallel to and spaced from one of said wheelchair side frame members when in a storage position, said tray being movable in a rearward direction of said wheelchair to said storage position so that said recess portion exposes said drive wheel for propulsion by the occupant of said wheelchair, and means for retaining said tray in a tilted position in said vertical plane so that said castered wheel is freely pivotable and so that said portion of said tray positioned to the rear of said wheelchair is flush with or forward of the rear periphery of the drive wheel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |