US3250501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outboard stern drive for boats and hydraulic shock absorber therefor
Assignee: Kiekhaefer Corp
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Filing: 1964-09-17
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Granted: 1966-05-10
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Expires: 1984-09-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles F Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:56
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/08; B63H20/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN AN OUTBOARD DRIVE FOR BOATS HAVING A DIRIGIBLE PROPULSION UNIT PIVOTALLY MOUNTED TO THE BOAT ON A SUBSTANTIALLY HORIZONTAL TRANSVERSE AXIS TO PROVIDE FOR REARWARD AND UPWARD TILTING OF THE UNIT UPON STRIKING OF AN UNDERWATER OBSTRUCTION, A HYDRAULC SHOCK ABSORBER COMPRISING A CYLINDER FILLED WITH INCOMPRESSIBLE LIQUID AND A PISTON IN SAID CYLINDER HAVING A PISTON ROD EXTENDING FROM ONE END OF THE CYLINDER, MEANS PIVOTALLY CONNECTING THE OUTER END OF SAID PISTON ROD AND THE OPPOSITE END OF SAID CYLINDER CORRESPONDINGLY TO SAID PROPULSION UNIT AND SAID BOAT, AND CONNECTING MEANS BEING DISPOSED RELATIVE TO THE TILT AXIS TO EFFECT AN INCREASING ACTUATION OF THE SHOCK ABSORBER AS THE TILT MOVEMENT PROGRESSES AND REDUCES IN VELOCITY TO PROVIDE A NEARLY CONSTANT RESISTANCE TO THE TILT MOVEMENT THROUGHOUT THE RANGE OF PERMISSIBLE TILTING OF
Claim 2
Dependent Claim
136 words
IN AN OUTBOARD DRIVE FOR BOATS HAVING A DIRIGIBLE PROPULSION UNIT PIVOTALLY MOUNTED TO THE BOAT ON A SUBSTANTIALLY HORIZONTAL TRANSVERSE AXIS TO PROVIDE FOR REARWARD AND UPWARD TILTING OF THE UNIT UPON STRIKING OF AN UNDERWATER OBSTRUCTION, A HYDRAULC SHOCK ABSORBER COMPRISING A CYLINDER FILLED WITH INCOMPRESSIBLE LIQUID AND A PISTON IN SAID CYLINDER HAVING A PISTON ROD EXTENDING FROM ONE END OF THE CYLINDER, MEANS PIVOTALLY CONNECTING THE OUTER END OF SAID PISTON ROD AND THE OPPOSITE END OF SAID CYLINDER CORRESPONDINGLY TO SAID PROPULSION UNIT AND SAID BOAT, AND CONNECTING MEANS BEING DISPOSED RELATIVE TO THE TILT AXIS TO EFFECT AN INCREASING ACTUATION OF THE SHOCK ABSORBER AS THE TILT MOVEMENT PROGRESSES AND REDUCES IN VELOCITY TO PROVIDE A NEARLY CONSTANT RESISTANCE TO THE TILT MOVEMENT THROUGHOUT THE RANGE OF PERMISSIBLE TILTING OF
References Cited (Backward Citations)
US3003724A
Cited
US3136287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |