US3859991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leg brace
Assignee: SUDBURY ENGINEERING
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Filing: 1973-11-02
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Granted: 1975-01-14
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Expires: 1993-11-02
Abstract
Abstract A leg brace of the drop-foot type having a calf band joined by two generally parallel rods to a shoe clamp.
Inventors
- 👤 Peter Theodores
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:13
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/0102; A61F5/0104; A61F5/0111; A61F5/0113
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
139 words
A leg brace, comprising: a. a band adapted to be attached to the calf of the user, b. a clamp consisting of two parts each having a flange for engagement with an edge of the sole of the shoe of the user and of means for drawing the parts together to clamp the sole between the flanges, and c. a pair of bowed rods of springy material each having a first end attached to the band and a second end fixed to the clamp, so that the band and clamp are resiliently connected, the first end being attached to the band by a connection structure which rigidly fixed the position of the first end with respect to the band and said connection structure including means which allows selective adjustment of the position either longitudinally or transversely of the rod.
Claim 2
Dependent Claim
139 words
A leg brace, comprising: a. a band adapted to be attached to the calf of the user, b. a clamp consisting of two parts each having a flange for engagement with an edge of the sole of the shoe of the user and of means for drawing the parts together to clamp the sole between the flanges, and c. a pair of bowed rods of springy material each having a first end attached to the band and a second end fixed to the clamp, so that the band and clamp are resiliently connected, the first end being attached to the band by a connection structure which rigidly fixed the position of the first end with respect to the band and said connection structure including means which allows selective adjustment of the position either longitudinally or transversely of the rod.
Claim 3
Dependent Claim
34 words
A leg brace as recited in claim 1, wherein the clamp has a rearward edge and a forward edge, and the rods are attached to the clamp in the vicinity of the forward edge.
Claim 4
Dependent Claim
55 words
A leg brace as recited in claim 1, in combination with a shoe wherein the sole of the shoe has a heel, the heel has a forward edge, and the flange extends rearwardly of the forward edge of the heel and engages the sole of the shoe rearwardly of the forward edge of the heel.
Claim 5
Dependent Claim
33 words
A leg brace as recited in claim 1, in combination with a shoe wherein the clamp is provided with spikes which extend downwardly from the clamp away from the sole of 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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |