US3754339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Athlete{40 s foots preventive device
Assignee: Individual
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Filing: 1972-04-19
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Granted: 1973-08-28
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Expires: 1992-04-19
Abstract
Abstract A device for preventing athlete''s foot or other eczema is provided which operates with the walking motion of the user''s feet and includes bellows units adapted to be arranged beneath the plantar arches of his feet. The bellows units are each operable to expand and contract as the user''s heel rises and falls and thus eject air into the interior of the shoe through orifices formed in the walls of the unit. Such ejection of air causes air flows in the shoe interior effectively to prevent any accumulation of moisture or temperature therein.
Inventors
- 👤 S Terasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:23
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/06; A43B7/08; A43B7/081
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
194 words
An athlete''s foot preventive device comprising bellows units each comprised of a base plate adapted to be arranged on the top sole surface of the shoe and a generally hill-shaped top section formed of an elastic sheet material enabling the section to maintain its own shape in the free state and having a top contour to fit the plantar arch of the user''s foot, defining together with a bottom section formed of a portion of said base plate an interior space large enough to fill the space formed between the foot sole and the top sole surface of the shoe as worn on the user''s foot when the user''s heel is raised, an air inlet port formed in the sloped inside portion of said top section and having a non-return valve means, a tubular air conduit formed on said base plate in a position to extend along the periphery of the user''s foot and in communication with the interior space of the respective bellows unit, and a multitude of small air orifices formed through the peripheral wall of said top section of said bellows unit and through the wall of said tubular air conduit.
Claim 2
Dependent Claim
194 words
An athlete''s foot preventive device comprising bellows units each comprised of a base plate adapted to be arranged on the top sole surface of the shoe and a generally hill-shaped top section formed of an elastic sheet material enabling the section to maintain its own shape in the free state and having a top contour to fit the plantar arch of the user''s foot, defining together with a bottom section formed of a portion of said base plate an interior space large enough to fill the space formed between the foot sole and the top sole surface of the shoe as worn on the user''s foot when the user''s heel is raised, an air inlet port formed in the sloped inside portion of said top section and having a non-return valve means, a tubular air conduit formed on said base plate in a position to extend along the periphery of the user''s foot and in communication with the interior space of the respective bellows unit, and a multitude of small air orifices formed through the peripheral wall of said top section of said bellows unit and through the wall of said tubular air conduit.
Claim 3
Dependent Claim
48 words
An athlete''s foot preventive device as claimed in claim 1 in which said tubular air conduit includes a portion formed to extend transversely through the space under the roots of the user''s toes and having small air orifices opened to eject air toward the spaces between the toes.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |