US4753022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandal sole
Assignee: Individual
•
Filing: 1987-04-27
•
Granted: 1988-06-28
•
Expires: 2007-04-27
Abstract
Abstract Sandal having a hollow sole containing air under slight pressure made by blow molding with a blow pipe having a pointed conical terminal providing a small entrance opening which is eventually sealed.
Inventors
- 👤 Mark A. Gasbarro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:47
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/18; A43B13/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
86 words
Sandal or the like, comprising: (a) a lower sole element formed with ground-gripping protuberances, (b) an upper sole element formed with foot-engaging depressions, and (c) an intermediate sole element joining the outer peripheries of the upper and lower sole elements in spaced, parallel relationship, the sole elements defining an interior cavity containing a gas under pressure, wherein the intermediate sole element is formed with upper and lower parts joined to form a bellows-like structure and wherein strap pins are integrally formed on the intermediaate sole porion.
Claim 2
Dependent Claim
86 words
Sandal or the like, comprising: (a) a lower sole element formed with ground-gripping protuberances, (b) an upper sole element formed with foot-engaging depressions, and (c) an intermediate sole element joining the outer peripheries of the upper and lower sole elements in spaced, parallel relationship, the sole elements defining an interior cavity containing a gas under pressure, wherein the intermediate sole element is formed with upper and lower parts joined to form a bellows-like structure and wherein strap pins are integrally formed on the intermediaate sole porion.
Claim 3
Dependent Claim
19 words
Sandal or the like as recited in claim 1, wherein the sole elements are formed of an elastomer polymer.
Claim 4
Dependent Claim
19 words
Sandal or the like as recited in claim 1, wherein the sole elements are formed by the blow-molding process.
Claim 5
Dependent Claim
23 words
Sandal or the like as recited in claim 3, wherein the gas under pressure is introduced into the cavity during the blow-molding process.
References Cited (Backward Citations)
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Cited
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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) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |