US3718994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski boot construction and method
Assignee: Calzaturificio Tecnica dei F.lli Zanatta SNC
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Filing: 1971-01-22
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Granted: 1973-03-06
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Expires: 1991-01-22
Abstract
Abstract A boot especially suitable for the construction of ski boots in which an inner molded shell is formed of a stiff or rigid material for providing rigidity at selected locations and an outer shell is molded about the inner shell with the outer shell comprised of a dissimiliar material having generally flexible and preferably abrasion resistance characteristics to provide flexibility at selected locations and also provide an exterior surface capable of resisting surface wear and abrasion. The invention is concerned with the boot construction as well as the method of forming the same.
Inventors
- 👤 I Spier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:16
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/06; B29D35/08; B29D35/081; B29D35/084; A; A43; A43B; A43B3/00; A43B3/0036; A43B3/0078; A43B3/0084; A43B5/00; A43B5/04; A43B5/0427; A43B5/0482
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
An outer shell for a boot comprising a molded inner shell portion of a first material and a molded outer shell portion of a second material bonded to said inner portion, said inner shell portion defining at least a sole portion and ankle covering portions, said inner shell portion being generally open along the front thereof, said inner shell portion being formed of a generally rigid plastic material, said outer shell portion defining a sole, a toe portion, vamps, a heel, a back portion, ankle covering portions extending above said ankle covering portions of said inner shell portion, an instep, and ankle encircling portions, said outer shell portion being formed of a generally flexible plastic material.
Claim 2
Dependent Claim
116 words
An outer shell for a boot comprising a molded inner shell portion of a first material and a molded outer shell portion of a second material bonded to said inner portion, said inner shell portion defining at least a sole portion and ankle covering portions, said inner shell portion being generally open along the front thereof, said inner shell portion being formed of a generally rigid plastic material, said outer shell portion defining a sole, a toe portion, vamps, a heel, a back portion, ankle covering portions extending above said ankle covering portions of said inner shell portion, an instep, and ankle encircling portions, said outer shell portion being formed of a generally flexible plastic material.
Claim 3
Dependent Claim
116 words
An outer shell for a boot comprising a molded inner shell portion of a first material and a molded outer shell portion of a second material bonded to said inner portion, said inner shell portion defining at least a sole portion and ankle covering portions, said inner shell portion being generally open along the front thereof, said inner shell portion being formed of a generally rigid plastic material, said outer shell portion defining a sole, a toe portion, vamps, a heel, a back portion, ankle covering portions extending above said ankle covering portions of said inner shell portion, an instep, and ankle encircling portions, said outer shell portion being formed of a generally flexible plastic material.
Claim 4
Dependent Claim
116 words
An outer shell for a boot comprising a molded inner shell portion of a first material and a molded outer shell portion of a second material bonded to said inner portion, said inner shell portion defining at least a sole portion and ankle covering portions, said inner shell portion being generally open along the front thereof, said inner shell portion being formed of a generally rigid plastic material, said outer shell portion defining a sole, a toe portion, vamps, a heel, a back portion, ankle covering portions extending above said ankle covering portions of said inner shell portion, an instep, and ankle encircling portions, said outer shell portion being formed of a generally flexible plastic material.
Claim 5
Dependent Claim
32 words
An outer shell for a boot as claimed in claim 1 including means on said inner and outer shell portions for effecting a mechanical interlock between said inner and outer shell portions.
Claim 6
Dependent Claim
37 words
An outer shell for a boot as claimed in claim 2 wherein said mechanical interlock means includes a plurality of apertures in said inner shell portion and projections on said outer shell portion extending into said apertures.
Claim 7
Dependent Claim
35 words
An outer shell For a boot as claimed in claim 2 wherein said mechanically interlock means includes a plurality of projections on said inner shell portion extending at least partially into said outer shell portion.
Claim 8
Dependent Claim
18 words
An outer shell for a boot as claimed in claim 1 wherein said first material is expanded Acrylonitrile-Butadiene-Styrene.
Claim 9
Dependent Claim
17 words
An outer shell for a boot as claimed in claim 1 wherein said second material is polyurethane.
Claim 10
Dependent Claim
63 words
An outer shell for a boot as claimed in claim 1 wherein said inner shell portion further defines a toe portion, vamps, a heel, and a back portion, said inner shell portion being generally open along the front thereof upwardly from said toe portion and said back portion of said outer shell portion extending above said back portion of said inner shell portion.
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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |