US4245410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed ski boot
Assignee: Gamebridge Inc
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Filing: 1979-05-14
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Granted: 1981-01-20
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Expires: 1999-05-14
Abstract
Abstract A ski boot having an outer shell which is formed from a structural polymeric foam. The density of the foam may be uniform or it may vary throughout the cross-section of said outer shell. The foam likewise incorporates inner and outer skins which may or may not be impermeable.
Inventors
- 👤 Robert P. Molitor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:53
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/12; A43B5/00; A43B5/04
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
62 words
A ski boot having an inner boot and an outer shell said outer shell being formed from a structural polymeric material having a flexual modulus of at least 0.025×10 psi, which incorporates an outer skin, an inner skin, and a foam core there between, wherein said outer skin, said inner skin, and said foam core are integral and are formed in situ.
Claim 2
Dependent Claim
62 words
A ski boot having an inner boot and an outer shell said outer shell being formed from a structural polymeric material having a flexual modulus of at least 0.025×10 psi, which incorporates an outer skin, an inner skin, and a foam core there between, wherein said outer skin, said inner skin, and said foam core are integral and are formed in situ.
Claim 3
Dependent Claim
31 words
The boot of claim 1 wherein said polymeric material is a member selected from the group consisting of polyurethane resins, polyalphaolefin resins and ionic polyethylene resins sold under the trademark Surlyn.
Claim 4
Dependent Claim
17 words
The boot of claim 1 wherein at least one of said inner and outer skins is permeable.
Claim 5
Dependent Claim
15 words
The boot of claim 1 wherein both of said inner and outer skins is impermeable.
Claim 6
Dependent Claim
19 words
The boot of claim 1 wherein the cell structure of said foam core is substantially uniform throughout said boot.
Claim 7
Dependent Claim
19 words
The boot of claim 1 wherein the cell structure of sid foam core varies in density throughout said boot.
Claim 8
Dependent Claim
17 words
The boot of claim 2 wherein at least one of said inner and outer skins is permeable.
Claim 9
Dependent Claim
15 words
The boot of claim 2 wherein both of said inner and outer skins are impermeable.
Claim 10
Dependent Claim
19 words
The boot of claim 2 wherein the cell structure of said foam core is substantially uniform throughout said boot.
Claim 11
Dependent Claim
19 words
The boot of claim 2 wherein the cell structure of said foam core varies in density throughout said boot.
Claim 12
Dependent Claim
38 words
The boot of claim 1 wherein the polymeric material is a mixture of a sodium base ionic polyethylene as sold under the trademark Surlyn 8198 and a zinc base ionic polyethylene as sold under the trademark Surlyn 1855.
Claim 13
Dependent Claim
25 words
The boot of claim 11 wherein said mixtures consist of 80% of said sodium base ionic polyethylene and 20% of said zinc base ionic polyethylene.
Claim 14
Dependent Claim
17 words
The boot of claim 11 wherein at least one of said inner and outer skins is permeable.
Claim 15
Dependent Claim
15 words
The boot of claim 11 wherein both of said inner and outer skins are impermeable.
Claim 16
Dependent Claim
19 words
The boot of claim 11 wherein the cell structure of said foam core is substantially uniform throughout said boot.
Claim 17
Dependent Claim
19 words
The boot of claim 11 wherein the cell structure of said foam core varies in density throughout said boot.
Claim 18
Dependent Claim
23 words
The boot of claim 1 wherein the flexual modulus of said structural polymeric material is from about 0.05 to about 0.30×10 5 psi.
Claim 19
Dependent Claim
23 words
The boot of claim 4 wherein the flexual modulus of said structural polymeric material is from about 0.05 to about 0.30×10 5 psi.
Claim 20
Dependent Claim
19 words
The boot of claim 11 wherein the flexual modulus of said structural polymeric material is about 0.1×10 5 psi.
Claim 21
Dependent Claim
19 words
The boot of claim 13 wherein the flexual modulus of said structural polymeric material is about 0.1×10 5 psi.
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) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |