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US3736673A Expired / Lapsed US ⏱️ 0.0 years remaining

Cushion shoe innersole construction

Assignee: Individual
•
Filing: 1971-10-01
•
Granted: 1973-06-05
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Expires: 1991-10-01
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Abstract

Abstract A cushion type innersole for use with a shoe comprising a first relatively upwardly positioned innersole element conforming generally to the shape of a foot of a wearer, a second innersole element moveably interconnected to and at least partially disposed beneath said first innersole element, the second innersole element being of a generally U-shaped configuration and extending rearwardly from that part of said first innersole element normally underlying the metatarsal area of said foot. Disposed beneath the second innersole element is a U-shaped sealed envelope, each leg of which contains a frangible flexible container in turn containing one phase of a two phase rigid foam system. The two phases are manually mixed before insertion of the device into the shoe of a wearer, and the foot placed thereupon to enable the foam upon expanding and curing to conform the upper surface of the device to the foot of the wearer. Optionally, the U-shaped sealed envelope may be provided with small perforations through which a small amount of foam, upon expanding passes to provide a cementitious effect serving to anchor the insole in position within a shoe. Forwardly of the metatarsal area, the toe cushioning portion of the device is provided with a sealed envelope containing a soft wax which conforms to the toes of the wearer as the device is used. In one embodiment, the device is formed in two pieces, whereby a variety of shoe sizes is readily accommodated by one size of device.

Inventors

  • 👤 B Dubner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 04:40
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/14; A43B7/1405; A43B7/1415; A43B7/145; A43B17/00; A43B17/02; A43B7/1455; A43B7/1463; A43B7/1464; A43B7/28

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 194 words
A cushion type innersole for use with a shoe comprising: a first relatively upwardly positioned innersole element conforming generally to the shape of a foot of a wearer, a second innersole element moveably interconnected to and at least partially disposed beneath said first innersole element, said second innersole element being of generally U-shaped configuration and extending rearwardly from that point of said first innersole element normally underlying the metatarsal area of said foot, a U-shaped sealed envelope underlying and secured to said second innersole element, said envelope having a pair of symmetrically disposed legs and a transversely extending portion interconnecting said legs; a pair of frangible containers disposed one in each of said legs of said envelope, each containing one phase of a two-phase synthetic resinous foam system, whereby the manual rupturing within said sealed envelope and subsequent mixing in the transverse portion thereof of said containers will cause an expanded filling of said envelope, the system having a sufficiently slow curing period to permit the insertion of said innersole into a shoe, and the placing of the foot of a wearer thereupon to form the final shape of expanded foam within the envelope.
Claim 2
Dependent Claim 194 words
A cushion type innersole for use with a shoe comprising: a first relatively upwardly positioned innersole element conforming generally to the shape of a foot of a wearer, a second innersole element moveably interconnected to and at least partially disposed beneath said first innersole element, said second innersole element being of generally U-shaped configuration and extending rearwardly from that point of said first innersole element normally underlying the metatarsal area of said foot, a U-shaped sealed envelope underlying and secured to said second innersole element, said envelope having a pair of symmetrically disposed legs and a transversely extending portion interconnecting said legs; a pair of frangible containers disposed one in each of said legs of said envelope, each containing one phase of a two-phase synthetic resinous foam system, whereby the manual rupturing within said sealed envelope and subsequent mixing in the transverse portion thereof of said containers will cause an expanded filling of said envelope, the system having a sufficiently slow curing period to permit the insertion of said innersole into a shoe, and the placing of the foot of a wearer thereupon to form the final shape of expanded foam within the envelope.
Claim 3
Dependent Claim 57 words
Structure in accordance with claim 1 in which the outer periphery of the second innersole element extends outwardly of the periphery of the first innersole element, whereby said U-shaped sealed envelope may conform at least partially to the shape of the shoe in which it is placed, in the absence of wrinkling of said first innersole element.
Claim 4
Dependent Claim 62 words
Structure in accordance with claim 1, said first innersole element extending to the toe area of a shoe in which it is placed, a second sealed envelope underlying and attached to said first innersole element, and a soft wax contained within said second envelope adapted to at least partially conform to the shape of the underside of the toes of a wearer.
Claim 5
Dependent Claim 32 words
Structure in accordance with claim 1, in which said first innersole element is of a length corresponding to that part of a foot of a wearer lying rearwardly of the metatarsal area.
Claim 6
Dependent Claim 40 words
Structure in accordance with claim 4, including a disconnected toe suPporting element adjustably positionable within a shoe with respect to said first innersole element, said toe supporting element including a sealed envelope, and a soft wax disposed within said envelope.
Claim 7
Dependent Claim 37 words
Structure in accordance with claim 5, said toe supporting element including an adhesively coated surface, and selectively removable means for protecting said adhesive surface and positioning said toe supporting element relative to the interior of the shoe.

References Cited (Backward Citations)

US2477588A Cited
US2760281A Cited
US3257742A Cited
US3316663A Cited
US3417494A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-06-04 1976-12-04 1977-06-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-04 1980-12-04 1981-06-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-04 1984-12-04 1985-06-05 $7700.00 Window Closed / Lapsed

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