US4760651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-ventilating shoe pad having shoe-lift effect
Assignee: Individual
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Filing: 1987-01-29
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Granted: 1988-08-02
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Expires: 2007-01-29
Abstract
Abstract A shoe pad includes an air-blowing compression chamber provided in the central space, a protruding tongue plate provided on the end portion of the pad to serve as a shoe-lift and plural concave slots or guide holes formed in the protruding tongue plate for circulating air passages, so that the shoe pad may be put into any shoe to enforce the air circulation in a shoe.
Inventors
- 👤 Chi Pon-Tzu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:13
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/06; A43B7/08; A43B7/081; A43B7/14; A43B7/1405; A43B7/1455; A43B7/146
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
152 words
A shoe pad adapted to fit in a shoe comprising: an upper plate having air vents formed therethrough, a lower plate and a pleated side wall circumferentially disposed between said upper and lower plates, defining an oblique wedge-shaped pocket body serving as an air-blowing chamber; a spring added between said upper and lower plates; a tongue plate protruding on a rear end portion of said upper plate; and plural guide slots each concave downwardly from said upper plate serving as passages of the air circulating in said air-blowing chamber and each said air vent of said upper plate formed in said guide slot, the improvement which comprises: said tongue plate formed on the rear portion of said upper plate having plural concave slots longitudinally formed on the back portion of said tongue plate communicated with said air-blowing chamber, said tongue plate formed as a shoe-lift for helping the wearing of said shoe.
Claim 2
Dependent Claim
152 words
A shoe pad adapted to fit in a shoe comprising: an upper plate having air vents formed therethrough, a lower plate and a pleated side wall circumferentially disposed between said upper and lower plates, defining an oblique wedge-shaped pocket body serving as an air-blowing chamber; a spring added between said upper and lower plates; a tongue plate protruding on a rear end portion of said upper plate; and plural guide slots each concave downwardly from said upper plate serving as passages of the air circulating in said air-blowing chamber and each said air vent of said upper plate formed in said guide slot, the improvement which comprises: said tongue plate formed on the rear portion of said upper plate having plural concave slots longitudinally formed on the back portion of said tongue plate communicated with said air-blowing chamber, said tongue plate formed as a shoe-lift for helping the wearing of said shoe.
Claim 3
Dependent Claim
34 words
A shoe pad according to claim 1, wherein said tongue plate is formed with plural air circulating passages therein adapted to direct air from shoe opening into said air-blowing chamber of said shoe pad.
References Cited (Backward Citations)
US3097438A
Cited
FR594172A
Cited
FR826665A
Cited
FR1155947A
Cited
US3180039A
Cited
US4215492A
Cited
GB2165439A
Cited
US4602441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |