Patent US3587511A successfully refreshed from Google Patents.
US3587511A
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US
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Hydraulic marine propulsion system
Assignee: Individual
•
Filing: 1969-04-24
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Granted: 1971-06-28
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Expires: 1989-04-24
Abstract
Abstract A HYDRAULIC PROPULSION SYSTEM FEATURING AN INBOARD POWER PLANT AND FLUID PRESSURE-GENERATING SYSTEM AND AN OUTBOARD FLUID DRIVING SYSTEM, THE INBOARD PRESSURE-GENERATING SYSTEM CONSISTING OF REVERSIBLE VARIABLE DISPLACEMENT AXIAL PISTON PUMP, LEVER-OPERATED SERVOSYSTEM, SPEED CONTROL, CHARGE PUMP AND VALVE MANIFOLD UNITS AND THE OUTBOARD FLUID-DRIVING SYSTEM CONSISTING OF A FIXED DISPLACEMENT AXIAL PISTON FLUID MOTOR AND PROPELLER.
Inventors
- 👤 Curt Buddrus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:06
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/42; B; B63; B63H; B63H20/00; B63H20/14; B63H20/20; B63H23/00; B63H23/22; B63H23/26; F16H61/433; B63H20/001; B63H20/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |