US4033624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid wheel-chair
Assignee: Individual
•
Filing: 1976-06-02
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Granted: 1977-07-05
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Expires: 1996-06-02
Abstract
Abstract A wheeled invalid-chair has leg-supports provided with levers for an invalid seated in the chair to adjust the inclination of the leg-supports. Each leg-support comprises a carrier spar pivoted at its upper end to the chair frame and supporting a foot rest at its lower end and a leg rest intermediate its ends. The lever is hinged to the carrier-spar, and can be swung from a position along-side the carrier-spar to engage an abutment provided by the rounded upper end of the carrier spar for adjusting the pivotal position of the leg support relative to the frame by pulling on the lever. A locking mechanism is connected between each leg support and the frame for locking the leg-support in the adjusted position.
Inventors
- 👤 Wilhelm Meyer Jun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:02
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/12; A61G5/1054; A61G5/125; A61G5/127; A61G5/128; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A wheeled invalid-chair comprising a frame, and leg-supports, said leg-supports each having a carrier-spar with upper and lower ends, pivot means connecting said upper end of said carrier-spar to said frame to pivot relative thereto about a horizontal axis, a foot rest plate carried by said carrier-spar at said lower end thereof, an actuating lever and hinge means connecting said lever to said carrier-spar at a position spaced from said horizontal axis, said frame having abutment means engageable by said lever for pivoting said leg support about said axis to adjust the position thereof relative to said frame.
Claim 2
Dependent Claim
98 words
A wheeled invalid-chair comprising a frame, and leg-supports, said leg-supports each having a carrier-spar with upper and lower ends, pivot means connecting said upper end of said carrier-spar to said frame to pivot relative thereto about a horizontal axis, a foot rest plate carried by said carrier-spar at said lower end thereof, an actuating lever and hinge means connecting said lever to said carrier-spar at a position spaced from said horizontal axis, said frame having abutment means engageable by said lever for pivoting said leg support about said axis to adjust the position thereof relative to said frame.
Claim 3
Dependent Claim
54 words
A wheeled invalid-chair as claimed in claim 1, wherein said frame has for each carrier-spar a supporting member and a supporting fork is attached to said support member, said pivot means is supported by said fork, and said carrier-spar has an upper end portion which is bent forward and connected to said pivot means.
Claim 4
Dependent Claim
60 words
A wheeled invalid-chair as claimed in claim 2, wherein said lever has opposite ends, said hinge means connects one said end of said lever to said spar in the region of the bend in said carrier-spar and underneath said pivot means, and said actuating lever having a longitudinal edge which forms a bearing surface for engagement with said abutment means.
Claim 5
Dependent Claim
36 words
A wheeled invalid-chair as claimed in claim 3, wherein the abutment means lies in the region of said pivot means and is formed by said upper end of said carrier-spar, which said end is rounded off.
Claim 6
Dependent Claim
62 words
A wheeled invalid-chair as claimed in claim 1, wherein said actuating lever is a tube or rod having opposite ends, said hinge means connects one said end to said carrier-spar for pivotal movement about a horizontal axis, and comprises a pivot and a bracket fixed to the carrier-spar and carrying said pivot, the other said end of said lever having a handle.
Claim 7
Dependent Claim
43 words
A wheeled invalid-chair as claimed in claim 3, wherein said actuating lever has a rest position in which said lever extends parallel with said carrier-spar, and said hinge means lies between said pivot means and said supporting member, and underneath said supporting fork.
Claim 8
Dependent Claim
76 words
A wheeled invalid-chair as claimed in claim 3, wherein locking means is connected between said carrier-spar and said supporting member for locking the leg-support in position relative to said frame, said locking means comprising a sliderod hinged to said carrier-spar, a guide sleeve attached to said supporting member said sliderod extending slidably through said guide sleeve and means for locking said sliderod to said guide sleeve for locking the leg-support in position relative to said frame.
Claim 9
Dependent Claim
16 words
A wheeled invalid-chair as claimed in claim 1, wherein said actuating lever is made from metal.
Claim 10
Dependent Claim
33 words
A wheeled invalid-chair as claimed in claim 1, wherein a leg rest is supported on said carrier-spar intermediate the ends thereof, and means are provided for adjusting the height of said leg rest.
Claim 11
Dependent Claim
40 words
A wheeled invalid-chair as claimed in claim 9, wherein the leg rest is a concave plate, a sleeve supports said plate on said carrier-spar, and said height adjusting means comprises a ring which is adjustable in position along said carrier-spar.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |