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US4557060A Expired / Lapsed US ⏱️ 0.0 years remaining

Insole with exchangeable reliant pieces

Assignee: Mizuno Corp
•
Filing: 1983-06-24
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Granted: 1985-12-10
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Expires: 2003-06-24
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Abstract

Abstract An insole for a sports shoe comprises an insole body of foam synthetic resin having recesses formed therein at the forefoot and heel areas. Corresponding pieces are of material having higher durometer hardness than that of the insole body and inserted in the recesses to provide good properties required for various kinds of sports.

Inventors

  • 👤 Yukio Kawashima

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 13:53
CPC Classifications
A; A43; A43B; A43B17/00; A43B17/14; A43B13/00; A43B13/02; A43B13/12; A43B3/00; A43B3/0036; A43B3/0047; A43B5/00

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 223 words
An insole for a shoe, said insole comprising: a body made of one of thermoplastic and thermosetting foam synthetic resin, said body including a heel area and a forefoot area having a top surface and a bottom surface, two recesses defined by said body located on one of the top surface and the bottom surface of said body, one of said two recesses being located at said heel area of said body and being spaced from the sides of said body, the other of said two recesses being located at a forefoot area of said body and extending laterally to opposed side edges of said body, two reslient members having a different durometer hardness than that of said body, said two resilient members being complementary in shape to said two recesses for frictionally engaging said two recesses, and said body includes a projection spaced from the peripheral edge of said one of said two recesses and projecting into said one recess, the resilient member complementary in shape to said one of said two recesses defines a hole frictionally engaging said projection, said body also includes two wedges, each wedge extending from opposed lateral edges of said other of said two recesses and the resilient member complementary in shape to said other of said two recesses defining two notches frictionally engaging said two wedges.
Claim 2
Dependent Claim 223 words
An insole for a shoe, said insole comprising: a body made of one of thermoplastic and thermosetting foam synthetic resin, said body including a heel area and a forefoot area having a top surface and a bottom surface, two recesses defined by said body located on one of the top surface and the bottom surface of said body, one of said two recesses being located at said heel area of said body and being spaced from the sides of said body, the other of said two recesses being located at a forefoot area of said body and extending laterally to opposed side edges of said body, two reslient members having a different durometer hardness than that of said body, said two resilient members being complementary in shape to said two recesses for frictionally engaging said two recesses, and said body includes a projection spaced from the peripheral edge of said one of said two recesses and projecting into said one recess, the resilient member complementary in shape to said one of said two recesses defines a hole frictionally engaging said projection, said body also includes two wedges, each wedge extending from opposed lateral edges of said other of said two recesses and the resilient member complementary in shape to said other of said two recesses defining two notches frictionally engaging said two wedges.
Claim 3
Dependent Claim 47 words
An insole as described in claim 1, wherein said two resilient members are one of several pairs of resilient members, each pair of resilient members having different elasticity and hardness than another pair of resilient members for changing the properties of the insole according to its use.
Claim 4
Dependent Claim 45 words
An insole as described in claim 1, wherein said body includes a projection spaced from the peripheral edge of said one recess and projecting into said one recess, the resilient member complementary in shape to said one recess defining a hole frictionally engaging said projection.
Claim 5
Dependent Claim 43 words
An insole as described in claim 1, wherein said body includes two wedges, each wedge extending from opposed lateral edges of said other recess and the resilient member complementary in shape to said other recess defining two notches frictionally engaging said two wedges.

References Cited (Backward Citations)

US1741419A Cited
US1907136A Cited
US2046732A Cited
US2088902A Cited
US2928193A Cited
US3594929A Cited
US4364188A Cited
US4408402A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-12-09 1989-06-10 1989-12-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-12-09 1993-06-10 1993-12-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-12-09 1997-06-10 1997-12-10 $7700.00 Window Closed / Lapsed

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