Patent US5228217A successfully refreshed from Google Patents.
US5228217A
Expired / Lapsed
US
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Method and a shoe sole construction for transferring stresses from ground to foot
Assignee: Individual
•
Filing: 1991-04-26
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Granted: 1993-07-20
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Expires: 2011-04-26
Abstract
Abstract The sole comprises a case in which a liquid-containing chamber is connected to a chamber containing sponge-like material. Pressure on the weight-bearing portion of the foot is redistributed isostatically by the liquid-containing chamber. The pressure created in the liquid-containing chamber is applied against chamber having the air-containing material. The compressed air-material chamber stores energy when the foot pushes against the ground and releases it, spring-like, into the liquid chamber when the foot moves from the ground. The sole also provides for use of unequal ceiling and floor surface areas in the liquid chamber for decreased or increased forces felt on the foot.
Inventors
- 👤 Leonid Y. Dabuzhsky
- 👤 Moisey M. Lerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:05
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/18; A43B13/20; A43B13/203; A43B17/00; A43B17/02; A43B17/026
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
A sole comprising: a case for placement between the foot and ground having a top portion for location of said case against the plantar portion of the foot; a bottom portion spaced apart from said top portion for location of said case against the ground; an outer wall for connecting said top portion to said bottom portion; said case further enclosing at least one chamber containing liquid; an air-containing resilient material located between said top and bottom portions and between said outer wall and said at least one chamber containing liquid; and said at least one chamber containing liquid defined by a ceiling of surface area S 1 and a floor of surface area S 2 is greater than S 1 .
Claim 2
Dependent Claim
122 words
A sole comprising: a case for placement between the foot and ground having a top portion for location of said case against the plantar portion of the foot; a bottom portion spaced apart from said top portion for location of said case against the ground; an outer wall for connecting said top portion to said bottom portion; said case further enclosing at least one chamber containing liquid; an air-containing resilient material located between said top and bottom portions and between said outer wall and said at least one chamber containing liquid; and said at least one chamber containing liquid defined by a ceiling of surface area S 1 and a floor of surface area S 2 is greater than S 1 .
Claim 3
Dependent Claim
13 words
The sole of claim 1 wherein said resilient material is impermeable to liquid.
Claim 4
Dependent Claim
21 words
The sole of claim 1 wherein said resilient material provides a wall for defining said at least one chamber containing liquid.
Claim 5
Dependent Claim
20 words
The sole of claim 1 wherein said at least one liquid containing chamber is comprised of material impermeable to liquid.
Claim 6
Dependent Claim
13 words
The sole of claim 1 wherein said resilient material has a cellular structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |