Patent US2303927A successfully refreshed from Google Patents.
US4633598A
Expired / Lapsed
US
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Insole for shoe
Assignee: Nippon Rubber Co Ltd
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Filing: 1984-09-14
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Granted: 1987-01-06
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Expires: 2004-09-14
Abstract
Abstract An insole for use in athletic shoes comprises an upper layer, a lower layer laminated on the upper layer, and a shock-absorptive foamed material layer laminated on the underside of the lower layer at least at the heel portion. The upper layer has a hardness of 30°-50°, and the lower layer has a hardness of 50°-70°. The shock-absorptive foamed material layer has a hardness of 50°-80°.
Inventors
- 👤 Yoshiharu Moronaga
- 👤 Junji Izumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:51
CPC Classifications
A; A43; A43B; A43B17/00; A43B17/003; A43B17/006; A43B13/00; A43B13/38; A43B13/40; A43B17/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
An insole for shoes, said insole comprising: an upper layer formed of an elastic foamed material having a 12.5°-28° shore A hardness; a lower layer formed of an elastic foamed material having a 28°-47° shore A hardness, said lower layer being laminated on a lower surface of said upper layer; and a shock-absorptive foamed material layer having a 28°-63° shore A hardness, said shock-absorptive foamed material layer being laminated on a lower surface of said lower layer at the heel portion; the heel portion increases in hardness from said upper layer to said lower layer and increases in hardness from said lower layer to said shock-absorptive foamed material layer.
Claim 2
Dependent Claim
109 words
An insole for shoes, said insole comprising: an upper layer formed of an elastic foamed material having a 12.5°-28° shore A hardness; a lower layer formed of an elastic foamed material having a 28°-47° shore A hardness, said lower layer being laminated on a lower surface of said upper layer; and a shock-absorptive foamed material layer having a 28°-63° shore A hardness, said shock-absorptive foamed material layer being laminated on a lower surface of said lower layer at the heel portion; the heel portion increases in hardness from said upper layer to said lower layer and increases in hardness from said lower layer to said shock-absorptive foamed material layer.
Claim 3
Dependent Claim
111 words
An insole for shoes, said insole comprising: an upper layer formed of an elastic foamed material having a 12.5°-28° shore A hardness; a lower layer formed of an elastic foamed material having a 28°-47° shore A hardness, said lower layer being laminated on a lower surface of said upper layer; a shock-absorptive foamed material layer having a 28°-63° shore A hardness, said shock-absorptive foamed material layer being laminated on the a lower surface of said lower layer only at the heel portion; and the heel portion increases in hardness from said upper layer to said lower layer and increases in hardness from said lower layer to said shock-absorptive foamed material layer.
Claim 4
Dependent Claim
111 words
An insole for shoes, said insole comprising: an upper layer formed of an elastic foamed material having a 12.5°-28° shore A hardness; a lower layer formed of an elastic foamed material having a 28°-47° shore A hardness, said lower layer being laminated on a lower surface of said upper layer; a shock-absorptive foamed material layer having a 28°-63° shore A hardness, said shock-absorptive foamed material layer being laminated on the a lower surface of said lower layer only at the heel portion; and the heel portion increases in hardness from said upper layer to said lower layer and increases in hardness from said lower layer to said shock-absorptive foamed material layer.
Claim 5
Dependent Claim
111 words
An insole for shoes, said insole comprising: an upper layer formed of an elastic foamed material having a 12.5°-28° shore A hardness; a lower layer formed of an elastic foamed material having a 28°-47° shore A hardness, said lower layer being laminated on a lower surface of said upper layer; a shock-absorptive foamed material layer having a 28°-63° shore A hardness, said shock-absorptive foamed material layer being laminated on the a lower surface of said layer at least at the heel portion; and the heel portion increases in hardness from said upper layer to said lower layer and increases a hardness from said lower layer to said shock-absorptive foamed material layer.
Claim 6
Dependent Claim
111 words
An insole for shoes, said insole comprising: an upper layer formed of an elastic foamed material having a 12.5°-28° shore A hardness; a lower layer formed of an elastic foamed material having a 28°-47° shore A hardness, said lower layer being laminated on a lower surface of said upper layer; a shock-absorptive foamed material layer having a 28°-63° shore A hardness, said shock-absorptive foamed material layer being laminated on the a lower surface of said layer at least at the heel portion; and the heel portion increases in hardness from said upper layer to said lower layer and increases a hardness from said lower layer to said shock-absorptive foamed material layer.
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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) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |