US4490928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mid-sole of a shoe
Assignee: Mizuno Corp
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Filing: 1983-07-22
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Granted: 1985-01-01
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Expires: 2003-07-22
Abstract
Abstract A mid-sole comprises a sole body of resilient foam material and a horseshoe-shaped rigid synthetic resin plate placed on the upper surface of the heel section of the sole body along the periphery thereof. At least one leg extends downwardly from the underside of the plate adjacent the inside portion of the heel section over its thickness to prevent the inner portion from inclining inwardly when a load is imposed on the inner portion of the heel section.
Inventors
- 👤 Yukio Kawashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:45
CPC Classifications
A; A43; A43B; A43B17/00; A43B13/00; A43B13/38; A43B13/41
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
A mid-sole of a shoe comprising a sole body of resilient foam material, and a horseshoe-shaped rigid synthetic resin plate of a desired width having a first portion thereof longer than a second portion thereof and said plate being positioned along the periphery of the upper surface of a heel section of the sole body; said plate including at least one leg secured to said plate and extending downwardly from the under surface of the first portion of the plate a distance equal to the thickness of the heel section, and said at least one leg being embedded in the sole body.
Claim 2
Dependent Claim
102 words
A mid-sole of a shoe comprising a sole body of resilient foam material, and a horseshoe-shaped rigid synthetic resin plate of a desired width having a first portion thereof longer than a second portion thereof and said plate being positioned along the periphery of the upper surface of a heel section of the sole body; said plate including at least one leg secured to said plate and extending downwardly from the under surface of the first portion of the plate a distance equal to the thickness of the heel section, and said at least one leg being embedded in the sole body.
Claim 3
Dependent Claim
26 words
A mid-sole of a shoe in accordance with claim 1 wherein said at least one leg is narrower in width than said rigid synthetic resin plate.
Claim 4
Dependent Claim
19 words
A mid-sole of a shoe in accordance with claim 1 wherein said leg is made of rigid synthetic resin.
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) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |