US3925916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot-fitting insert for ski boot or the like
Assignee: Individual
•
Filing: 1974-08-22
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Granted: 1975-12-16
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Expires: 1994-08-22
Abstract
Abstract A flexible insert for a boot comprises a foot-fitting liner with a core of elastomeric sheet material sandwiched between two skins. At least part of the core is an open-celled foam polymer in an air-impervious envelope, preferably of heat-sealable plastic.
Inventors
- 👤 Carlo Garbuio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:17
CPC Classifications
A; A43; A43B; A43B5/00; A43B5/04; A43B5/0405
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
53 words
An insert for a boot; comprising a foot-fitting liner of flexible sheet material including an elastomeric core sandwiched between two skins, at least part of said core having a multiplicity of interstices filled with air, said skins including a fabric impregnated with an air-impervious mass to form an airtight envelope about said part.
Claim 2
Dependent Claim
53 words
An insert for a boot; comprising a foot-fitting liner of flexible sheet material including an elastomeric core sandwiched between two skins, at least part of said core having a multiplicity of interstices filled with air, said skins including a fabric impregnated with an air-impervious mass to form an airtight envelope about said part.
Claim 3
Dependent Claim
17 words
An insert as defined in claim 1 wherein said part consists essentially of an open-celled foam polymer.
Claim 4
Dependent Claim
74 words
An insert for a boot, comprising a foot-fitting liner of flexible sheet material including two juxtaposed skins bonded to each other along a plurality of closed seams encompassing separate areas, and an elastomeric core of open-celled foam polymer sandwiched between said skins in each of said areas, said skins forming an air-impervious envelope about each core whereby air in the cells of each core has limited mobility within the envelope but cannot escape therefrom.
Claim 5
Dependent Claim
74 words
An insert for a boot, comprising a foot-fitting liner of flexible sheet material including two juxtaposed skins bonded to each other along a plurality of closed seams encompassing separate areas, and an elastomeric core of open-celled foam polymer sandwiched between said skins in each of said areas, said skins forming an air-impervious envelope about each core whereby air in the cells of each core has limited mobility within the envelope but cannot escape therefrom.
Claim 6
Dependent Claim
25 words
An insert as defined in claim 3, further comprising a solid elastomeric layer sandwiched between said skins in parts of said liner outside said areas.
Claim 7
Dependent Claim
23 words
An insert as defined in claim 3, wherein said areas extend along opposite sides of said liner across the region of the ankle.
Claim 8
Dependent Claim
27 words
An insert as defined in claim 5, further comprising a resilient pad on said liner overlying a fraction of each area in the region of the ankle.
Claim 9
Dependent Claim
13 words
An insert as defined in claim 3 wherein said skins include a fabric.
Claim 10
Dependent Claim
19 words
An insert as defined in claim 7 wherein said fabric is impregnated with an impervious mass along said part.
Claim 11
Dependent Claim
18 words
An insert as defined in claim 7 wherein said envelope consists of thermoplastic layers overlain by said fabric.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |