US3735511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Footwear
Assignee: Monsanto Chemicals Ltd
•
Filing: 1971-10-15
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Granted: 1973-05-29
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Expires: 1991-10-15
Abstract
Abstract This invention relates to footwear and particularly to an article of outer footwear, such as a boot or shoe, which comprises an insole assembly of novel construction. The invention also relates to the insole assembly itself. Said novel insole assembly comprises an extruded thermoplastic foamed sheet having bonded thereto a textile fabric which forms the lower surface of the insole assembly so as to improve the strength of the adhesive bond to the outer edge of the upper and the sole proper.
Inventors
- 👤 J Gilbert
- 👤 D Weight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:11
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; A; A43; A43B; A43B13/00; A43B13/28; A43B13/32; B32B5/02; B32B5/024; B32B5/18; B32B7/00; B32B7/04; B32B7/12; B32B2262/00; B32B2262/06; B32B2262/062; B32B2266/00; B32B2266/08; B32B2437/00; B32B2437/02
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
89 words
An improved article of outer footwear such as a boot or shoe, having in combination a sole, an upper the outer edge of which is bent round an insole assembly and adhesively bonded to the lower surface thereof, wherein the improvement being the insole assembly, comprising a sheet of extruded foamed thermoplastic resin having bonded thereto a textile fabric which forms the lower adhesive surface of the insole assembly so as to improve the strength of the adhesive bond to the outer edge of the upper and the sole.
Claim 2
Dependent Claim
89 words
An improved article of outer footwear such as a boot or shoe, having in combination a sole, an upper the outer edge of which is bent round an insole assembly and adhesively bonded to the lower surface thereof, wherein the improvement being the insole assembly, comprising a sheet of extruded foamed thermoplastic resin having bonded thereto a textile fabric which forms the lower adhesive surface of the insole assembly so as to improve the strength of the adhesive bond to the outer edge of the upper and the sole.
Claim 3
Dependent Claim
37 words
An article of footwear according to claim 1, in which the sheet of resin is bonded directly to the textile fabric and the laminate so formed extends over the whole of the lower surface of the insole.
Claim 4
Dependent Claim
23 words
An article of footwear as in claim 1, in which the textile fabric is a woven fabric made from synthetic fibres or cotton.
Claim 5
Dependent Claim
15 words
An article of footwear according to claim 1, in which the resin comprises a polyolefin.
Claim 6
Dependent Claim
14 words
A article of footwear according to claim 4, in which the polyolefin is polyethylene.
Claim 7
Dependent Claim
23 words
An article of footwear according to claim 1, in which the resin comprises a copolymer of an olefin and a non-hydrocarbon aliphatic monomer.
Claim 8
Dependent Claim
41 words
An article of footwear according to claim 6, in which the copolymer is a copolymer of ethylene and vinyl acetate having present in the copolymer about 2-17 % by weight of vinyl acetate and about 83-98 percent by weight of ethylene.
Claim 9
Dependent Claim
32 words
An article of footwear according to claim 7, in which the resin sheet is foamed, each side of said sheet having a substantially non-foamed skin less than about 0.002 inch in thickness.
Claim 10
Dependent Claim
51 words
An article of footwear according to claim 7, in which the foamed resin has a substantially closed cell structure and the majority of the cells have a diameter from 0.004 inch to 0.04 inch and wherein the density of the foamed resin is from 5 to 40 pounds per cubic foot.
Claim 11
Dependent Claim
27 words
An article of footwear according to claim 1, in which the resin sheet is foamed and is bonded to the textile fabric by means of an adhesive.
Claim 12
Dependent Claim
25 words
An article of footwear according to claim 1, in which the resin sheet is foamed and is bonded to the textile fabric by heat sealing.
Claim 13
Dependent Claim
48 words
An insole assembly for use in constructing an article of outer footwear such as a boot or shoe, comprising a sheet of extruded foamed thermoplastic resin having bonded thereto a textile fabric which forms the lower surface of the insole assembly, said lower surface being an adhesive surface.
Claim 14
Dependent Claim
48 words
An insole assembly for use in constructing an article of outer footwear such as a boot or shoe, comprising a sheet of extruded foamed thermoplastic resin having bonded thereto a textile fabric which forms the lower surface of the insole assembly, said lower surface being an adhesive surface.
Claim 15
Dependent Claim
36 words
An insole assembly as in claim 12, in which the sheet of resin is bonded directly to the textile fabric and the laminate so formed extends over the whole of the lower surface of the insole.
Claim 16
Dependent Claim
22 words
An insole assembly as in claim 12, in which the textile fabric is a woven fabric made from synthetic fibres or cotton.
Claim 17
Dependent Claim
14 words
An insole assembly as in claim 12, in which the resin comprises a polyolefin.
Claim 18
Dependent Claim
14 words
An insole assembly as in claim 15, in which the polyolefin is polyethylene copolymer.
References Cited (Backward Citations)
US1701896A
Cited
US1926683A
Cited
US2115810A
Cited
US2153832A
Cited
US2240603A
Cited
US3418732A
Cited
US3449844A
Cited
US3638336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |