US3761129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leg support for invalid chair
Assignee: ORTHOPEDIC LEG SUPPORT Co A CORP OF
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Filing: 1971-07-06
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Granted: 1973-09-25
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Expires: 1991-07-06
Abstract
Abstract Structure including a clamp with opposed jaws, applicable to and removable from the frame of an invalid''s chair, and an elongated cradle, for supporting the leg of a user seated in the chair with his leg extending outwardly from the chair seat, is pivoted at one end to the clamp. A locking screw is threaded through the cradle and into contact with the clamp to hold the cradle in selected angular positions relative to the clamp. When the locking screw is loosened, the cradle is disengaged automatically from the clamp jaw to swivel freely on the clamp, thus facilitating adjustment by a person in the chair or near it.
Inventors
- 👤 G Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:26
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/12; A61G5/1054; A61G5/125; A61G5/128; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
191 words
In a unit for ready application to and removal from an invalid''s chair, a clamp for gripping a chair frame member, an elongated cradle for supporting the leg of a person seated in the chair, a pivot pin mounting the cradle on said clamp for angular adjustment of the cradle on the chair, two blocks fixed to said cradle, spaced apart and spaced from said clamp, an upright plate fixed to said clamp with one side slidable vertically over one of said blocks and the other side provided with a row of ridges extending transversely of said cradle, a channel member slidable over the other of said blocks transversely of said plate and having a row of ridges opposing said plate ridges, a spring positioned between said channel member and the latter-mentioned block for biasing the ridged plate and block flange apart and thereby freeing said cradle for pivotal adjustment about said pivot pin, and a manually operable device on the other flange of said channel member for positively holding said plate and flange ridges selectively interengaged against the thrust of said spring and thereby maintaining said cradle at adjusted angles.
Claim 2
Dependent Claim
191 words
In a unit for ready application to and removal from an invalid''s chair, a clamp for gripping a chair frame member, an elongated cradle for supporting the leg of a person seated in the chair, a pivot pin mounting the cradle on said clamp for angular adjustment of the cradle on the chair, two blocks fixed to said cradle, spaced apart and spaced from said clamp, an upright plate fixed to said clamp with one side slidable vertically over one of said blocks and the other side provided with a row of ridges extending transversely of said cradle, a channel member slidable over the other of said blocks transversely of said plate and having a row of ridges opposing said plate ridges, a spring positioned between said channel member and the latter-mentioned block for biasing the ridged plate and block flange apart and thereby freeing said cradle for pivotal adjustment about said pivot pin, and a manually operable device on the other flange of said channel member for positively holding said plate and flange ridges selectively interengaged against the thrust of said spring and thereby maintaining said cradle at adjusted angles.
Claim 3
Dependent Claim
39 words
A unit as described in claim 1 in which the force-supplying means extends away from the clamp and cradle for ready manipulation by the hand of a person seated on the chair with a leg supported on the cradle.
References Cited (Backward Citations)
US980580A
Cited
US2826242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |