US3360050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus for rotary wing aircraft
Assignee: Bristol Siddeley Engines Ltd
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Filing: 1965-09-24
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Granted: 1967-12-26
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Expires: 1985-09-24
Abstract
No abstract record available.
Inventors
- 👤 John D Sibley
- 👤 Edward A Simonis
- 👤 Desmond L V Lusby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:19
CPC Classifications
G; G05; G05D; G05D13/00; B; B64; B64C; B64C27/00; B64C27/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A POWER PLANT FOR AIRCRAFT OF THE HELICOPTER TYPE COMPRISING, A POWER UNIT, A ROTARY WING SYSTEM DRIVEN BY THE POWER UNIT, COLLECTIVE PITCH CONTROL MEANS CONTROLLING THE COLLECTIVE PITCH OF THE ROTARY WING SYSTEM, AUTOMATIC FUEL CONTROL APPARATUS FOR THE POWER UNIT ARRANGED TO RESPOND AUTOMATICALLY TO CHANGES IN THE POWER DEMANDS OF THE ROTARY WING SYSTEM TO VARY THE POWER AVAILABLE FROM THE POWER PLANT IN ACCORDANCE WITH CHANGES IN SUCH DEMANDS, AND ADJUSTABLE STOP MEANS WHICH IS AUTOMATICALLY MOVED WITH MOVEMENTS OF THE COLLECTIVE PITCH CONTROL AND IMPOSES A VARIABLE RESTRICTION ON THE RANGE OF MOVEMENT OF THE FUEL CONTROL APPARATUS IN A MANNER SUCH THAT AT ANY SETTING OF THE COLLECTIVE PITCH CONTROL MEANS IT WILL PREVENT THE FUEL CONTROL APPARATUS FROM MOVING IN AT LEAST ONE DIRECTION MORE THAN A PREDETERMINED AMOUNT FROM THE POSITION APPROPRIATE TO THE POWER REQUIRED AT THAT SETTING.
Claim 2
Dependent Claim
148 words
A POWER PLANT FOR AIRCRAFT OF THE HELICOPTER TYPE COMPRISING, A POWER UNIT, A ROTARY WING SYSTEM DRIVEN BY THE POWER UNIT, COLLECTIVE PITCH CONTROL MEANS CONTROLLING THE COLLECTIVE PITCH OF THE ROTARY WING SYSTEM, AUTOMATIC FUEL CONTROL APPARATUS FOR THE POWER UNIT ARRANGED TO RESPOND AUTOMATICALLY TO CHANGES IN THE POWER DEMANDS OF THE ROTARY WING SYSTEM TO VARY THE POWER AVAILABLE FROM THE POWER PLANT IN ACCORDANCE WITH CHANGES IN SUCH DEMANDS, AND ADJUSTABLE STOP MEANS WHICH IS AUTOMATICALLY MOVED WITH MOVEMENTS OF THE COLLECTIVE PITCH CONTROL AND IMPOSES A VARIABLE RESTRICTION ON THE RANGE OF MOVEMENT OF THE FUEL CONTROL APPARATUS IN A MANNER SUCH THAT AT ANY SETTING OF THE COLLECTIVE PITCH CONTROL MEANS IT WILL PREVENT THE FUEL CONTROL APPARATUS FROM MOVING IN AT LEAST ONE DIRECTION MORE THAN A PREDETERMINED AMOUNT FROM THE POSITION APPROPRIATE TO THE POWER REQUIRED AT THAT SETTING.
References Cited (Backward Citations)
US2664958A
Cited
US3108435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |