Patent US3890650A successfully refreshed from Google Patents.
US3890650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial foot for leg prostheses
Assignee: IPOS GmbH and Co KG
•
Filing: 1974-08-02
•
Granted: 1975-06-24
•
Expires: 1994-08-02
Abstract
Abstract An artificial foot made of synthetic materials with an integrally cast metallic base plate having a forward downwardly depending offset portion of a unique configuration, the rear end of the base plate being supported by a tab.
Inventors
- 👤 Jan Prahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:04
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/66; A61F2002/5007; A61F2002/6614; A61F2002/6657
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
An artificial foot made of foamed synthetic materials that are foamed within a mold, for leg prostheses, characterized by a metallic base plate disposed in the area of the sole of the foot within the foamed foot member, a forwardly extending portion of said metallic base plate defining a downwardly depending offset portion, the configuration of said offset portion of said base plate adapted to the roll-off motion of the ball of the foot, said offset portion secured to a forefoot core made of a homogeneous plastic material, the configuration of said forefoot core corresponding to the shape of the point of the foot, and a rearwardly extending portion of said metallic base plate supported by a portion of a tab made of a homogeneous plastic material, said tab being disposed within the heel portion of the foot.
Claim 2
Dependent Claim
138 words
An artificial foot made of foamed synthetic materials that are foamed within a mold, for leg prostheses, characterized by a metallic base plate disposed in the area of the sole of the foot within the foamed foot member, a forwardly extending portion of said metallic base plate defining a downwardly depending offset portion, the configuration of said offset portion of said base plate adapted to the roll-off motion of the ball of the foot, said offset portion secured to a forefoot core made of a homogeneous plastic material, the configuration of said forefoot core corresponding to the shape of the point of the foot, and a rearwardly extending portion of said metallic base plate supported by a portion of a tab made of a homogeneous plastic material, said tab being disposed within the heel portion of the foot.
Claim 3
Dependent Claim
48 words
An artificial foot as in claim 1, further characterized by a recess in a rearward portion of the foot, said recess extending from the top surface of said artificial foot down to the upper surface of the metallic base plate and adapted to receive articulation and attachment members.
Claim 4
Dependent Claim
24 words
An artificial foot as in claim 2, further characterized in that said forefoot core and said tab are made of a homogeneous elastomer material.
Claim 5
Dependent Claim
41 words
An artificial foot as in claim 3, further characterized in that the foot body is integrally foamed of a cellular resilient material about the functional core of the foot consisting of said metallic base plate, said forefoot core and said tab.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |