US3986501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for alleviating foot-drop
Assignee: Individual
•
Filing: 1975-09-15
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Granted: 1976-10-19
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Expires: 1995-09-15
Abstract
Abstract Apparatus for alleviating foot-drop having a rigid vertical member which is curved and arched to conform to the rear of the calf of the human leg. The bottom of the vertical member has a cup-like shape to conform to the heel of the foot without extending under the heel. A V-strap member is connected at the top of the vertical member for the purpose of insertion at the shoe near the dorsum portion of the foot for lifting the dorsum of the foot when the heel is raised.
Inventors
- 👤 Jerome G. Schad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:04
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/0102; A61F5/0104; A61F5/0111; A61F5/0113; A61F5/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
191 words
Apparatus for alleviation of human foot-drop for use with a heel, rear of a calf and a shoe comprising: a. a rigid vertical member having a longitudinal axis, a top portion and a bottom portion, the member is curved concavely throughout its longitudinal axis to conform to a shape of the rear of the calf, the member is arched along the longitudinal axis from the bottom to the top to conform to an arc of the rear of the calf in the leg from a bottom of a heel platform of the shoe to a point along the rear of the calf, the bottom portion of the member is cupped to conform to the heel without extending under the heel, the bottom portion is intended to be inserted against the heel and into the shoe between the heel and the shoe; and b. a V-strap member having two ends each fastened at opposite sides near the top of the vertical member, the strap is intended to be connected to the shoe at a dorsum portion of a foot forming a V shape with a vertex near the dorsum of the foot.
Claim 2
Dependent Claim
191 words
Apparatus for alleviation of human foot-drop for use with a heel, rear of a calf and a shoe comprising: a. a rigid vertical member having a longitudinal axis, a top portion and a bottom portion, the member is curved concavely throughout its longitudinal axis to conform to a shape of the rear of the calf, the member is arched along the longitudinal axis from the bottom to the top to conform to an arc of the rear of the calf in the leg from a bottom of a heel platform of the shoe to a point along the rear of the calf, the bottom portion of the member is cupped to conform to the heel without extending under the heel, the bottom portion is intended to be inserted against the heel and into the shoe between the heel and the shoe; and b. a V-strap member having two ends each fastened at opposite sides near the top of the vertical member, the strap is intended to be connected to the shoe at a dorsum portion of a foot forming a V shape with a vertex near the dorsum of the foot.
Claim 3
Dependent Claim
15 words
The apparatus as recited in claim 1 wherein the V-strap member is an elastomer material.
Claim 4
Dependent Claim
58 words
The apparatus as recited in claim 1 including a circumferential strap having one end connected at the top portion at one side of the vertical member for the purpose of partially encircling a front of the calf and attaching the other end of the circumferential strap to the opposite side of the vertical member at its top portion.
Claim 5
Dependent Claim
17 words
The apparatus as recited in claim 1 wherein the bottom portion is narrower than the top portion.
Claim 6
Dependent Claim
33 words
The apparatus as recited in claim 1 wherein the top portion has a curved portion which is arched away from that portion which is intended to engage the rear portion of the calf.
Claim 7
Dependent Claim
44 words
The apparatus as recited in claim 1 including a means positioned near the bottom portion of the vertical member and on the opposite side of the portion which engages the heel for preventing the vertical member from slipping between the heel and the shoe.
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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |