Patent US3714920A successfully refreshed from Google Patents.
US3714920A
Expired / Lapsed
US
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Marine propulsion unit
Assignee: Avco Corp
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Filing: 1971-03-25
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Granted: 1973-02-06
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Expires: 1991-03-25
Abstract
Abstract THE DISCLOSURE ILLUSTRATES A MARINE PROPULSION UNIT IN WHICH A GAS TURBINE ENGINE HAVING A ROTATABLE OUTPUT SHAFT IS VERTICALLY MOUNTED ON A PAIR OF TRUNNIONS SECURED TO A VESSEL. A PROPELLER HOUSING IS PIVOTALLY MOUNTED ADJACENT THE OUTPUT SHAFT AND HAS A PROPELLER DRIVEN BY THE OUTPUT SHAFT. AN ACTUATOR PIVOTS THE PROPELLER HOUSING RELATIVE TO THE ENGINE HOUSING TO DIRECT THE THRUST PRODUCED BY THE PROPELLER.
Inventors
- 👤 E Setterblade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:55
CPC Classifications
B; B63; B63H; B63H20/00; B63H21/00; B63H21/12; B63H21/16; B63H20/08; B63H20/12; B63H20/14; B63H20/32; B63H23/00; B63H23/02; B63H2023/0283
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |