US4525940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beach sandals
Assignee: Individual
•
Filing: 1983-04-05
•
Granted: 1985-07-02
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Expires: 2003-04-05
Abstract
Abstract A beach sandal of improved comfort and enhanced safety comprises a sole provided with a plurality of perforations whose openings in the upper and lower surfaces of the sole are displaced or whose middle portions are displaced from their outer portions. The perforations provide an escape for the water drag on the wearer's foot and consequently make wading through water easier. Because the perforations are not formed perpendicularly, when the wearer happens to step on a sharp object such as a shell, the possibility of the object sliding through one of the perforations and reaching the foot is remote.
Inventors
- 👤 Hideto Mochizuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:40
CPC Classifications
A; A43; A43B; A43B5/00; A43B5/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
38 words
A beach sandal which is comprised of a sole having a foot retaining means and further including a plurality of non-perpendicular through-holes arranged throughout the surface of the sole forming openings in the upper and lower surfaces thereof.
Claim 2
Dependent Claim
38 words
A beach sandal which is comprised of a sole having a foot retaining means and further including a plurality of non-perpendicular through-holes arranged throughout the surface of the sole forming openings in the upper and lower surfaces thereof.
Claim 3
Dependent Claim
35 words
A beach sandal according to claim 1, wherein the amount of said displacement between the openings in the upper and lower surfaces is greater than the diameter of the openings in the direction of displacement.
Claim 4
Dependent Claim
31 words
A beach sandal according to claim 2, wherein protuberances are formed one each along the circumferential edges of the openings of said through holes in the upper surface of the sole.
Claim 5
Dependent Claim
16 words
A beach sandal according to claim 2, wherein the lower surface of the sole is corrugated.
Claim 6
Dependent Claim
22 words
A beach sandal according to claim 2, wherein the thickness of the sole is greater at the heel than at the toe.
Claim 7
Dependent Claim
16 words
A beach sandal according to claim 5, wherein the lower surface of the sole is corrugated.
Claim 8
Dependent Claim
17 words
A beach sandal according to claim 2, wherein said sole is formed of a plurality of layers.
Claim 9
Dependent Claim
33 words
A beach sandal according to claim 7, wherein at least one hole of a smaller diameter is formed through the upper layer of the sole for each hole formed through the lower layer.
Claim 10
Dependent Claim
22 words
A beach sandal according to claim 7, wherein the thickness of the sole is greater at the heel than at the toe.
Claim 11
Dependent Claim
16 words
A beach sandal according to claim 9, wherein the lower surface of the sole is corrugated.
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) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |