Patent US1291601A successfully refreshed from Google Patents.
Patent US3783532A successfully refreshed from Google Patents.
US3783532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water shoes
Assignee: Individual
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Filing: 1973-05-24
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Granted: 1974-01-08
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Expires: 1993-05-24
Abstract
Abstract This invention consists of shoes for walking on the surface of water as a sport or recreation. It consists primarily of a foam plastic, streamlined, solid throughout pontoon for each foot of the wearer. The pontoons are provided with flexible fins which are wrapped around the sides and bottom of, and attached to, the pontoon. These fins open up to resist backward motion thereby providing traction, and close against the bottom and sides of the pontoon to reduce drag during the forward motion. Also, when the fins are closed, folds are formed at the bottom corners of the pontoon to provide additional stability.
Inventors
- 👤 H Harradine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:50
CPC Classifications
B; B63; B63B; B63B34/00; B63B34/50; B63B34/56
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
A shoe, for each foot of the wearer, for walking on the surface of water, comprising a streamlined, solid throughout pontoon, generally of rectangular cross-section, and made of very light but rigid plastic material; a plurality of spaced fins of a flexible material attached to said pontoon and wrapped around its bottom and sides, each of said fins extending outwardly from the sides of said pontoon, and downwardly past the bottom thereof to form a pocket to provide water resistance against the backward movement of said pontoon, said fins closing against the walls and bottom of said pontoon by the action of the water, during the forward motion of the pontoon to reduce water drag, and said fins being so shaped as to form an outwardly extending fold from each bottom corner of said pontoon to provide additional stability; and a cavity provided in the upper part of said pontoon for the insertion of the wear''s foot therein, said cavity having a hinged foot plate at the bottom thereof equipped with standard foot attachments for binding the said shoe to the foot.
Claim 2
Dependent Claim
182 words
A shoe, for each foot of the wearer, for walking on the surface of water, comprising a streamlined, solid throughout pontoon, generally of rectangular cross-section, and made of very light but rigid plastic material; a plurality of spaced fins of a flexible material attached to said pontoon and wrapped around its bottom and sides, each of said fins extending outwardly from the sides of said pontoon, and downwardly past the bottom thereof to form a pocket to provide water resistance against the backward movement of said pontoon, said fins closing against the walls and bottom of said pontoon by the action of the water, during the forward motion of the pontoon to reduce water drag, and said fins being so shaped as to form an outwardly extending fold from each bottom corner of said pontoon to provide additional stability; and a cavity provided in the upper part of said pontoon for the insertion of the wear''s foot therein, said cavity having a hinged foot plate at the bottom thereof equipped with standard foot attachments for binding the said shoe to the foot.
Claim 3
Dependent Claim
23 words
A shoe such as described in claim 1, the pontoon of which is provided with longitudinal reinforcement bars therein to provide additional rigidity.
Claim 4
Dependent Claim
29 words
A shoe such as described in claim 1 the pontoons of which are painted or otherwise covered on their outer surface with a waterproof paint or other waterproof covering.
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |