Patent US4484780A successfully refreshed from Google Patents.
US4484780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leg rest hanger
Assignee: WA THOMPSON & Co Ltd A Co OF NEW ZEALAND
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Filing: 1981-10-14
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Granted: 1984-11-27
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Expires: 2001-10-14
Abstract
Abstract The invention relates to a structure that may very simply be fitted to and removed from a wide variety of patterns of wheelchair. The structure supports a leg rest that may be a simple horizontal foot rest for a person sitting in a conventional position, be tilted so as to lift the toes in relation to the heels, may support a rigid leg, or be tilted to the vertical so as not to obstruct a person moving from sitting in the wheelchair to standing on the ground. The foot rest projects forward a lesser distance than does the conventional footrest.
Inventors
- 👤 Chadwick B. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:11
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/12; A61G5/1054; A61G5/128; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
128 words
A leg rest hanger for use with a wheelchair having cross-bracing members under the wheelchair seat, a connector which comprises a bolt having a projecting head, for joining the cross-bracing members and supporting the leg rest hanger, and side frame members under the seat, said leg rest hanger comprising: side arms for extending to said side frame members to fix the lateral positon of the leg rest hanger with respect to the wheelchair; a foot rest supported and fixed laterally by said leg rest hanger upon which the lower limbs of an occupant of the wheelchair may be rested; and an aperture in said hanger for receiving the head of said bolt to secure the hanger to the connector and allow removal of the hanger from the wheelchair.
Claim 2
Dependent Claim
128 words
A leg rest hanger for use with a wheelchair having cross-bracing members under the wheelchair seat, a connector which comprises a bolt having a projecting head, for joining the cross-bracing members and supporting the leg rest hanger, and side frame members under the seat, said leg rest hanger comprising: side arms for extending to said side frame members to fix the lateral positon of the leg rest hanger with respect to the wheelchair; a foot rest supported and fixed laterally by said leg rest hanger upon which the lower limbs of an occupant of the wheelchair may be rested; and an aperture in said hanger for receiving the head of said bolt to secure the hanger to the connector and allow removal of the hanger from the wheelchair.
Claim 3
Dependent Claim
22 words
A leg rest hanger as claimed in claim 1 wherein the foot rest comprises a foot plate partially surrounded by a rim.
Claim 4
Dependent Claim
48 words
A leg rest hanger as claimed in claim 1 wherein the footrest is pivotable between an operative position in which it is adapted to support the occupant's lower limbs, and a retracted position in which the space normally occupied by the occupant's lower limbs is left substantially clear.
Claim 5
Dependent Claim
22 words
A leg rest hanger as claimed in claim 1 wherein the position of the foot rest in its operative position is adjustable.
Claim 6
Dependent Claim
34 words
A leg rest hanger as claimed in claim 1 wherein the side arms are adjustable in length whereby the foot rest hanger is adapted to be fitted to a variety of patterns of wheelchair.
Claim 7
Dependent Claim
29 words
A leg rest hanger as claimed in claim 1 wherein said connector further comprises guide means to facilitate the insertion of the head of the bolt into the aperture.
Claim 8
Dependent Claim
19 words
A wheelchair as claimed in claim 6 wherein said guide means comprises a V-shaped member located on said bolt.
Claim 9
Dependent Claim
26 words
A wheelchair as claimed in claim 6 wherein said guide means is provided with a stabilising means to hold the guide means in a guiding position.
Claim 10
Dependent Claim
21 words
A wheelchair as claimed in claim 6 wherein said guide means comprises a conical shaping of the head of the bolt.
Claim 11
Dependent Claim
117 words
A wheelchair, comprising: a seat; cross-bracing members under the seat; a connector comprising a bolt having a projecting head for joining the cross-bracing members; side frame members under the seat; a leg rest hanger supported by said connector, comprising; side arms extending to said side frame members to fix the lateral position of the leg rest hanger with respect to the wheelchair, a foot rest supported and fixed laterally by said leg rest hanger upon which the lower limbs of an occupant of the wheelchair may be rested; and an aperture in said hanger for receiving the head of said bolt to secure the hanger to the connector and allow removal of the hanger from the wheelchair.
Claim 12
Dependent Claim
117 words
A wheelchair, comprising: a seat; cross-bracing members under the seat; a connector comprising a bolt having a projecting head for joining the cross-bracing members; side frame members under the seat; a leg rest hanger supported by said connector, comprising; side arms extending to said side frame members to fix the lateral position of the leg rest hanger with respect to the wheelchair, a foot rest supported and fixed laterally by said leg rest hanger upon which the lower limbs of an occupant of the wheelchair may be rested; and an aperture in said hanger for receiving the head of said bolt to secure the hanger to the connector and allow removal of the hanger from the wheelchair.
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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) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |