Patent US3254622A successfully refreshed from Google Patents.
US3254622A
Expired / Lapsed
US
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Surfboard propulsion device
Assignee: Individual
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Filing: 1964-11-20
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Granted: 1966-06-07
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Expires: 1984-11-20
Abstract
No abstract record available.
Inventors
- 👤 Clive H Bramson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:55
CPC Classifications
B; B63; B63B; B63B32/00; B63B32/40; B63B32/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A SURFBOARD-TYPE DEVICE CAPABLE OF SUPPORTING AT LEAST ONE HUMAN BEING, SAID DEVICE INCLUDING A CAVITY PORTION HAVING A FILL-DISCHARGE OPENING, SAID FILL-DISCHARGE OPENING FACING REARWARDLY OF SAID DEVICE, SAID DEVICE BEING OF BUOYANT CHARACTER WHEREBY SAID FILL-DISCHARGE OPENING IS DISPOSED ABOVE THE SURFACE OF A BODY OF WATER WHEN SAID DEVICE IS IN ITS NORMALLY BUOYANT STATE, SAID FILLDISCHARGE OPENING BEING CAPABLE OF RAPIDLY AND READILY RECEIVING A VOLUME OF WATER UPON SUBMERGENCE THEREOF BENEATH THE SURFACE OIF THE WATER UPON THE APPLICATION OF AN EXTERNAL FORCE TO SAID DEVICE, SAID FILL-DISCHARGE OPENING BEING CAPABLE OF RAPIDLY AND READILY DISCHARGING SAID VOLUME OF WATER WHEN SAID EXTERNAL FORCE IS REMOVED AND SAID FILL-DISCHARGE OPENING RAPIDLY RISES TO ITS NORMALLY BUOYANT POSITION ABOVE THE SURFACE OF THE WATER TO OCCASION SAID RAPID DISCHARGE OF SAID VOLUME OF WATER THEREFROM TO THEREBY PROPEL SAID DEVICE IN A DIRECTION OPPOSITE TO THE DIRECTION OF THE DISCHARGING WATER.
Claim 2
Dependent Claim
155 words
A SURFBOARD-TYPE DEVICE CAPABLE OF SUPPORTING AT LEAST ONE HUMAN BEING, SAID DEVICE INCLUDING A CAVITY PORTION HAVING A FILL-DISCHARGE OPENING, SAID FILL-DISCHARGE OPENING FACING REARWARDLY OF SAID DEVICE, SAID DEVICE BEING OF BUOYANT CHARACTER WHEREBY SAID FILL-DISCHARGE OPENING IS DISPOSED ABOVE THE SURFACE OF A BODY OF WATER WHEN SAID DEVICE IS IN ITS NORMALLY BUOYANT STATE, SAID FILLDISCHARGE OPENING BEING CAPABLE OF RAPIDLY AND READILY RECEIVING A VOLUME OF WATER UPON SUBMERGENCE THEREOF BENEATH THE SURFACE OIF THE WATER UPON THE APPLICATION OF AN EXTERNAL FORCE TO SAID DEVICE, SAID FILL-DISCHARGE OPENING BEING CAPABLE OF RAPIDLY AND READILY DISCHARGING SAID VOLUME OF WATER WHEN SAID EXTERNAL FORCE IS REMOVED AND SAID FILL-DISCHARGE OPENING RAPIDLY RISES TO ITS NORMALLY BUOYANT POSITION ABOVE THE SURFACE OF THE WATER TO OCCASION SAID RAPID DISCHARGE OF SAID VOLUME OF WATER THEREFROM TO THEREBY PROPEL SAID DEVICE IN A DIRECTION OPPOSITE TO THE DIRECTION OF THE DISCHARGING WATER.
References Cited (Backward Citations)
US2511323A
Cited
US3111695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |