US3155165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turboprop engine control with underspeed governor
Assignee: Motors Liquidation Co
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Filing: 1957-06-11
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Granted: 1964-11-03
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Expires: 1977-06-11
Abstract
No abstract record available.
Inventors
- 👤 Floyd J Boyer
- 👤 Robert J Wente
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:37
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A CONTROL FOR A TURBO-PROP POWER PLANT, MEANS FOR DELIVERING FUEL TO SAID POWER PLANT INCLUDING FLOW REGULATING MEANS, MEANS FOR CONTROLLING SAID FLOW REGULATING MEANS INCLUDING A SPEED GOVERNOR, IN COMBINATION WITH A PROPELLER DRIVEN BY THE POWER PLANT AND HAVING VARIABLE PITCH BLADES, A LOW PITCH STOP FOR SAID BLADES, AND A SECOND SPEED GOVERNOR OPERATIVELY CONNECTED TO SAID PROPELLER FOR CONTROLLING THE PITCH OF SAID BLADES, SAID SECOND GOVERNOR BEING EFFECTIVE TO MOVE SAID BLADES AGAINST SAID STOP UPON A PREDETERMINED SPEED BEING REACHED, SAID FIRST MENTIONED GOVERNOR HAVING A LOWER SETTING THAN SAID SECOND SPEED GOVERNOR WHEREBY SAID FIRST MENTIONED GOVERNOR CONTROLS THE SPEED OF THE POWER PLANT AND THE PROPELLER BY VARYING FUEL FLOW IN A SPEED RANGE BELOW SAID PREDETERMINED SPEED WHILE SAID BLADES ARE AGAINST SAID STOP AND INEFFECTIVE TO VARY SPEED.
Claim 2
Dependent Claim
139 words
A CONTROL FOR A TURBO-PROP POWER PLANT, MEANS FOR DELIVERING FUEL TO SAID POWER PLANT INCLUDING FLOW REGULATING MEANS, MEANS FOR CONTROLLING SAID FLOW REGULATING MEANS INCLUDING A SPEED GOVERNOR, IN COMBINATION WITH A PROPELLER DRIVEN BY THE POWER PLANT AND HAVING VARIABLE PITCH BLADES, A LOW PITCH STOP FOR SAID BLADES, AND A SECOND SPEED GOVERNOR OPERATIVELY CONNECTED TO SAID PROPELLER FOR CONTROLLING THE PITCH OF SAID BLADES, SAID SECOND GOVERNOR BEING EFFECTIVE TO MOVE SAID BLADES AGAINST SAID STOP UPON A PREDETERMINED SPEED BEING REACHED, SAID FIRST MENTIONED GOVERNOR HAVING A LOWER SETTING THAN SAID SECOND SPEED GOVERNOR WHEREBY SAID FIRST MENTIONED GOVERNOR CONTROLS THE SPEED OF THE POWER PLANT AND THE PROPELLER BY VARYING FUEL FLOW IN A SPEED RANGE BELOW SAID PREDETERMINED SPEED WHILE SAID BLADES ARE AGAINST SAID STOP AND INEFFECTIVE TO VARY SPEED.
References Cited (Backward Citations)
US2536158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |