Patent US3786581A successfully refreshed from Google Patents.
US3786581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski boot
Assignee: Hope KK
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Filing: 1973-02-26
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Granted: 1974-01-22
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Expires: 1993-02-26
Abstract
Abstract A ski boot made of a rigid material comprises a boot proper and a shaft pivotably connected to the boot proper and having its lower front portion cut off to enable it to tilt in a forward direction. An air bladder is provided in the cut off portion of the shaft and a pipe connected to the air bladder communicates the air bladder with the inside of the boot proper. A forward lean motion of the skier during skiing is utilized for compressing the air bladder and thereby providing ventilation inside the ski boot.
Inventors
- 👤 T Mochizuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:22
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/06; A43B7/08; A43B7/081; A43B1/00; A43B1/0018; A43B5/00; A43B5/04; A43B5/0427; A43B5/0452; A43B5/0454; A43B5/0458
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
A ski boot made of a rigid material comprising a boot proper, a shaft pivotably connected to said boot proper and having its lower front portion cut off to enable it to tilt in a forward direction, an air bladder provided in said cut off portion of the shaft and a pipe connected to said air bladder and communicating the inside of said air bladder with the inside of the boot proper.
Claim 2
Dependent Claim
72 words
A ski boot made of a rigid material comprising a boot proper, a shaft pivotably connected to said boot proper and having its lower front portion cut off to enable it to tilt in a forward direction, an air bladder provided in said cut off portion of the shaft and a pipe connected to said air bladder and communicating the inside of said air bladder with the inside of the boot proper.
Claim 3
Dependent Claim
50 words
A ski boot as defined in claim 1 which further comprises a suction valve provided on the portion exposed to the outside air of said air bladder and a discharge valve provided at a desired place in a passage between said air bladder and the foremost tip of said pipe.
Claim 4
Dependent Claim
20 words
A ski boot as defined in claim 1 in which said air bladder has horizontal folds in its front 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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |