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Patent US3218034A successfully refreshed from Google Patents.
US3218034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winch on a ship for hoisting and lowering a boat
Assignee: Individual
•
Filing: 1961-10-04
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Granted: 1965-11-16
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Schat Marinus Leendert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:26
CPC Classifications
B; B63; B63B; B63B23/00; B63B23/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A WINDING MECHANISM FOR SHIPBOARD TACKLE TO HOIST AND LOWER A LIFEBOAT, MOTOR LAUNCH, OR SIMILAR CRAFT, COMPRISING A DRUM ON WHICH ONE END OF A TACKLE IS TO BE WOUND, A MAIN MOTOR, MEANS CONNECTING SAID MAIN MOTOR TO SAID DRUM TO DRIVE THE DRUM IN A HOISTING DIRECTION, AN AUXILIARY MOTOR, MEANS NONDETACHABLY CONNECTING SAID AUXILIARY MOTOR TO SAID DRUM TO FOLLOW ITS MOVEMENT IN BOTH HOISTING AND LOWERING DIRECTIONS, A SECOND DRUM TO WHICH THE OTHER END OF THE TACKLE IS ADAPTED TO BE FASTENED, AND A SECOND AUXILIARY MOTOR NONDETACHABLY COUPLED TO SAID SECOND DRUM, SAID AUXILIARY MOTORS BEING EXCITABLE TO DRIVE THE DRUMS IN A HOISTING DIRECTION WITH A LESSER FORCE THAN SAID MAIN MOTOR AND SUFFICIENT ONLY TO KEEP THE TACKLE TAUT DURING LOWERING MOVEMENT CAUSED BY THE WEIGHT OF A BOAT AND DURING HOISTING MOVEMENT AS WHEN THE BOAT IS LIFTED BY A WAVE, SAID FORCE BEING INSUFFICIENT TO HAMPER SUCH LOWERING MOVEMENT.
Claim 2
Dependent Claim
160 words
A WINDING MECHANISM FOR SHIPBOARD TACKLE TO HOIST AND LOWER A LIFEBOAT, MOTOR LAUNCH, OR SIMILAR CRAFT, COMPRISING A DRUM ON WHICH ONE END OF A TACKLE IS TO BE WOUND, A MAIN MOTOR, MEANS CONNECTING SAID MAIN MOTOR TO SAID DRUM TO DRIVE THE DRUM IN A HOISTING DIRECTION, AN AUXILIARY MOTOR, MEANS NONDETACHABLY CONNECTING SAID AUXILIARY MOTOR TO SAID DRUM TO FOLLOW ITS MOVEMENT IN BOTH HOISTING AND LOWERING DIRECTIONS, A SECOND DRUM TO WHICH THE OTHER END OF THE TACKLE IS ADAPTED TO BE FASTENED, AND A SECOND AUXILIARY MOTOR NONDETACHABLY COUPLED TO SAID SECOND DRUM, SAID AUXILIARY MOTORS BEING EXCITABLE TO DRIVE THE DRUMS IN A HOISTING DIRECTION WITH A LESSER FORCE THAN SAID MAIN MOTOR AND SUFFICIENT ONLY TO KEEP THE TACKLE TAUT DURING LOWERING MOVEMENT CAUSED BY THE WEIGHT OF A BOAT AND DURING HOISTING MOVEMENT AS WHEN THE BOAT IS LIFTED BY A WAVE, SAID FORCE BEING INSUFFICIENT TO HAMPER SUCH LOWERING MOVEMENT.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |