US3795994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-cushion socks
Assignee: Individual
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Filing: 1971-05-04
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Granted: 1974-03-12
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Expires: 1991-05-04
Abstract
Abstract This sock is of the type described in the head patent i.e. arranged to constitute air cushions interposed between the wearer''s foot and the boot. It consists of a thin, flexible and air-impervious envelope divided longitudinally into a number, for example five, of internal, air-tight compartments of relatively great dimensions, each of them forming an air cushion, since air is contained in each of them, this air being adapted to flow from one compartment to another through throttling passages. These socks can easy by the manufactured commercially scale, in a trouble-free manner, and are adapted to prove entirely satisfactory to the wearer.
Inventors
- 👤 Ava Y Dall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:46
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/16; A41; A41B; A41B11/00; A41B11/005; A41B11/006; A43B17/00; A43B17/02; A43B17/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A sock comprising a thin envelope of flexible, air-impervious material, divided longitudinally into a plurality of internal fluid-tight compartments of relatively large dimensions, each compartment containing air and forming an air cushion, said envelope being sized to extend beneath the full length of a foot with each compartment producing an individual damping action when a load is applied thereto, a different air pressure being obtained in each one of said compartments in order better to adapt each of them to the load to be applied thereto.
Claim 2
Dependent Claim
86 words
A sock comprising a thin envelope of flexible, air-impervious material, divided longitudinally into a plurality of internal fluid-tight compartments of relatively large dimensions, each compartment containing air and forming an air cushion, said envelope being sized to extend beneath the full length of a foot with each compartment producing an individual damping action when a load is applied thereto, a different air pressure being obtained in each one of said compartments in order better to adapt each of them to the load to be applied thereto.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |