Patent US4336661A successfully refreshed from Google Patents.
US4336661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe insert
Assignee: Individual
•
Filing: 1980-04-21
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Granted: 1982-06-29
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Expires: 2000-04-21
Abstract
Abstract A shoe insert in the form of an envelope which is air impervious and sized to fit within the shoe of a wearer and which is composed of an upper surface and a lower surface interconnected by a side surface and a pad arranged in spanning relation within the envelope, the pad being of cushioning material and preferably having a plurality of holes arranged in a pattern extending through the pad but not through the envelope. In one preferred embodiment the envelope is closed and some air withdrawn from the envelope before it is closed to provide an air cushion. In a second preferred embodiment, the envelope has a hole through it to create an air pump and circulation effect in the shoe of a wearer.
Inventors
- 👤 Walter A. Medrano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:11
CPC Classifications
A; A43; A43B; A43B17/00; A43B17/02; A43B17/03; A43B17/08; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23943
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
185 words
A shoe insert comprising: an envelope of air impervious material, said envelope, as seen in plan, tracing the outline of a human foot; said envelope having an upper surface and a lower surface and a side surface joining said upper and lower surfaces, said outline having a heel zone, a forward zone and an intermediate zone, a flat pad of cushioning foam material in the envelope nestled betweeen the upper and lower and side surfaces; said side surface comprising a portion extending downwardly and outwardly from said top surface toward but not to said bottom surface and said side surface further comprises a portion extending upwardly from said bottom surface toward but not to said upper surface, and said downwardly extending portion having an inside surface and said portion extending upwardly having an outside surface and said upwardly and downwardly extending portions being heat-sealed at the inside surface of the downwardly extending portion and the outside surface of the upwardly extending portion to enshroud the upwardly extending portion a hole being provided through the upper surface in said intermediate zone spaced from said side surface.
Claim 2
Dependent Claim
185 words
A shoe insert comprising: an envelope of air impervious material, said envelope, as seen in plan, tracing the outline of a human foot; said envelope having an upper surface and a lower surface and a side surface joining said upper and lower surfaces, said outline having a heel zone, a forward zone and an intermediate zone, a flat pad of cushioning foam material in the envelope nestled betweeen the upper and lower and side surfaces; said side surface comprising a portion extending downwardly and outwardly from said top surface toward but not to said bottom surface and said side surface further comprises a portion extending upwardly from said bottom surface toward but not to said upper surface, and said downwardly extending portion having an inside surface and said portion extending upwardly having an outside surface and said upwardly and downwardly extending portions being heat-sealed at the inside surface of the downwardly extending portion and the outside surface of the upwardly extending portion to enshroud the upwardly extending portion a hole being provided through the upper surface in said intermediate zone spaced from said side surface.
Claim 3
Dependent Claim
21 words
The device as set forth in claim 1 wherein a hole is provided in said lower surface in said intermediate zone.
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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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |