Patent US3148557A successfully refreshed from Google Patents.
US3148557A
Expired / Lapsed
US
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Twin counter-rotating drive shaft engine
Assignee: Outboard Marine Corp
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Filing: 1962-03-22
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Granted: 1964-09-15
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Expires: 1982-03-22
Abstract
No abstract record available.
Inventors
- 👤 William J Shimanckas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:07
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/14; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19484; Y10T74/19493
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE COMBINATION IN AN OUTBOARD MOTOR OF A UNITARY PROPULSION UNIT, AND A BRACKET SUPPORTING SAID PROPULSION UNIT FOR DIRIGIBLE MOVEMENT ABOUT A GENERALLY UPRIGHT AXIS, SAID PROPULSION UNIT COMPRISING A POWER HEAD, A LOWER UNIT SPACED SUBSTANTIALLY BENEATH SAID POWER HEAD, A GENERALLY UPRIGHT STRUT CONNECTING SAID LOWER UNIT AND SAID POWER HEAD, AN OPPOSED PISTON ENGINE MOUNTED IN SAID POWER HEAD AND INCLUDING A PAIR OF PARALLEL, GENERALLY UPRIGHT CRANKSHAFTS, A PROPELLER SHAFT, MEANS IN SAID LOWER UNIT ROTATABLY MOUNTING SAID PROPELLER SHAFT, POWER TRANSMISSION MEANS INCLUDING A PAIR OF UPRIGHT DRIVE SHAFTS EXTENDING THROUGH SAID STRUT, SAID PAIR OF DRIVESHAFTS BEING RESPECTIVELY CONNECTED TO SAID PAIR OF CRANKSHAFTS AND TO SAID PROPELLER SHAFT, AND MEANS FOR CAUSING SAID DRIVESHAFTS TO BE COUNTER ROTATING.
Claim 2
Dependent Claim
126 words
THE COMBINATION IN AN OUTBOARD MOTOR OF A UNITARY PROPULSION UNIT, AND A BRACKET SUPPORTING SAID PROPULSION UNIT FOR DIRIGIBLE MOVEMENT ABOUT A GENERALLY UPRIGHT AXIS, SAID PROPULSION UNIT COMPRISING A POWER HEAD, A LOWER UNIT SPACED SUBSTANTIALLY BENEATH SAID POWER HEAD, A GENERALLY UPRIGHT STRUT CONNECTING SAID LOWER UNIT AND SAID POWER HEAD, AN OPPOSED PISTON ENGINE MOUNTED IN SAID POWER HEAD AND INCLUDING A PAIR OF PARALLEL, GENERALLY UPRIGHT CRANKSHAFTS, A PROPELLER SHAFT, MEANS IN SAID LOWER UNIT ROTATABLY MOUNTING SAID PROPELLER SHAFT, POWER TRANSMISSION MEANS INCLUDING A PAIR OF UPRIGHT DRIVE SHAFTS EXTENDING THROUGH SAID STRUT, SAID PAIR OF DRIVESHAFTS BEING RESPECTIVELY CONNECTED TO SAID PAIR OF CRANKSHAFTS AND TO SAID PROPELLER SHAFT, AND MEANS FOR CAUSING SAID DRIVESHAFTS TO BE COUNTER ROTATING.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |