Patent US4324593A successfully refreshed from Google Patents.
Patent US4395783A successfully refreshed from Google Patents.
US4395783A
Expired / Lapsed
US
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Method of making an artificial leg
Assignee: Vessa Ltd
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Filing: 1981-07-16
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Granted: 1983-08-02
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Expires: 2001-07-16
Abstract
Abstract An artificial leg is assembled from a thigh member and a selected one of a plurality of preformed modular endoskeletal shin members each having an identical knee support member and ankle attachment member but differing in length of shin tube. A cellular plastics cosmesis is moulded onto the shin member. A foot may be attached to the shin member with an intermediate disc bearing differentially spaced circumferential teeth on its upper and lower faces which locate in sockets in the ankle attachment member and in the foot to permit fine adjustment of the position of the foot relative to the shin member.
Inventors
- 👤 Harry Eyre
- 👤 James A. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:06
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/66; A61F2/6607; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30433; A61F2002/5007; A61F2/5044; A61F2002/5055; A61F2220/00; A61F2220/0025; A61F2220/0041
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
167 words
An assembly of a shin member and foot for an artificial leg having a disc sandwiched between said shin member and foot, the upper face of the disc and the shin member locating by engagement of a first set of circumferentially spaced teeth in a first corresponding set of sockets and the lower face of the disc and the foot locating by engagement of a second set of circumferentially spaced teeth in a second corresponding set of sockets, said second set of teeth having a different angular spacing from said first set of teeth to permit the making of fine adjustments in the positions of said shin member and foot relative to one another, and a bolt passing through a hole in said disc and locating in an internally threaded anchorage point at the base of the shin member to secure the foot to the shin member against movement longitudinally apart whereby the foot is located in a fixed predetermined angular position relative to the shin member.
Claim 2
Dependent Claim
167 words
An assembly of a shin member and foot for an artificial leg having a disc sandwiched between said shin member and foot, the upper face of the disc and the shin member locating by engagement of a first set of circumferentially spaced teeth in a first corresponding set of sockets and the lower face of the disc and the foot locating by engagement of a second set of circumferentially spaced teeth in a second corresponding set of sockets, said second set of teeth having a different angular spacing from said first set of teeth to permit the making of fine adjustments in the positions of said shin member and foot relative to one another, and a bolt passing through a hole in said disc and locating in an internally threaded anchorage point at the base of the shin member to secure the foot to the shin member against movement longitudinally apart whereby the foot is located in a fixed predetermined angular position relative to the shin member.
Claim 3
Dependent Claim
51 words
An assembly according to claim 1, wherein the foot comprises a keel member of rigid material moulded into a body of cellular plastics material, an ankle base member above the keel member and fixed to the shin member, and transverse pivot means interconnecting the keel member and the ankle base member.
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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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |