Patent US4867259A successfully refreshed from Google Patents.
US4356643A
Expired / Lapsed
US
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Non-slip footwear
Assignee: Individual
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Filing: 1980-11-28
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Granted: 1982-11-02
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Expires: 2000-11-28
Abstract
Abstract A footwear having an underside of the sole thereof covered by a friction pad comprised of interlaced or intertwisted, relatively stiff nylon fibers woven through a backing liner secured to the sole underside, while the lower, outer surface of the pad thus formed, serves to engage a slippery surface without possible slipping.
Inventors
- 👤 Adelbert L. Kester
- 👤 George Spector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:39
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A non-slip footwear, comprising in combination a shoe or the like including an upper, a sole and a heel at a bottom thereof, and a matted friction pad affixed under said sole and heel said pad being made of U-shaped strands of nylon stiff fibers woven through a backing liner affixed to said sole and heel and lower ends of said fibers, extending downward wherein an underside of said sole and heel to which said friction pad is affixed, are contoured with cleats said pad being similary contoured when mounted on said sole and heel presenting a contoured fiber surface for contact with a walking surface and wherein said pad fits between said cleats to interlock therewith.
Claim 2
Dependent Claim
117 words
A non-slip footwear, comprising in combination a shoe or the like including an upper, a sole and a heel at a bottom thereof, and a matted friction pad affixed under said sole and heel said pad being made of U-shaped strands of nylon stiff fibers woven through a backing liner affixed to said sole and heel and lower ends of said fibers, extending downward wherein an underside of said sole and heel to which said friction pad is affixed, are contoured with cleats said pad being similary contoured when mounted on said sole and heel presenting a contoured fiber surface for contact with a walking surface and wherein said pad fits between said cleats to interlock therewith.
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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) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |