US3363414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine fuel system
Assignee: Rolls Royce PLC
•
Filing: 1965-01-22
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Granted: 1968-01-16
•
Expires: 1985-01-22
Abstract
No abstract record available.
Inventors
- 👤 Johnson Christopher Linley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:04
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/16; F02C7/00; F02C7/22; F02C9/26; F02C9/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A GAS TURBINE ENGINE FUEL SYSTEM COMPRISING A FIRST FUEL CONDUIT, A CENTRIFUGAL FUEL PUMP, AN AIR TURBINE DRIVEN BY BLEED AIR AT A PRESSURE FUNCTIONALLY RELATED TO THE DELIVERY PRESSURE OF THE ENGINE COMPRESSOR AND WHICH IS DRIVINGLY CONNECTED TO THE FUEL PUMP, THE FUEL PUMP SUPPLYING THE FIRST FUEL CONDUIT WITH FUEL, A FUEL INLET PASSAGE TO THE FUEL PUMP, A SECOND FUEL CONDUIT, A THROTTLE VALVE DISPOSED IN SAID FIRST FUEL CONDUIT, SPEED, REPONSIVE MEANS REPONSIVE TO ENGINE ROTATIONAL SPEED, MEANS FOR MOVING SAID THROTTLE VALVE IN A CLOSING DIRECTION WHEN THE ENGINE ROTATIONAL SPEED EXCEEDS A PREDETERMINED VALUE, A PRESSURISING VALVE BY WAY OF WHICH THE FUEL WHICH HAS PASSED SAID THROTTLE VALVE PASSES TO THE SECOND FUEL CONDUIT, A SPRING WHICH URGES THE PRESSURISING VALVE TOWARDS THE CLOSED POSITION, A RESTRICTED BY-PASS PASSAGE WHICH BYPASSES THE PRESSURISING VALVE AND ESTABLISHES RESTRICTED COMMUNICATION BETWEEN THE FIRST AND SECOND FUEL CONDUITS.
Claim 2
Dependent Claim
154 words
A GAS TURBINE ENGINE FUEL SYSTEM COMPRISING A FIRST FUEL CONDUIT, A CENTRIFUGAL FUEL PUMP, AN AIR TURBINE DRIVEN BY BLEED AIR AT A PRESSURE FUNCTIONALLY RELATED TO THE DELIVERY PRESSURE OF THE ENGINE COMPRESSOR AND WHICH IS DRIVINGLY CONNECTED TO THE FUEL PUMP, THE FUEL PUMP SUPPLYING THE FIRST FUEL CONDUIT WITH FUEL, A FUEL INLET PASSAGE TO THE FUEL PUMP, A SECOND FUEL CONDUIT, A THROTTLE VALVE DISPOSED IN SAID FIRST FUEL CONDUIT, SPEED, REPONSIVE MEANS REPONSIVE TO ENGINE ROTATIONAL SPEED, MEANS FOR MOVING SAID THROTTLE VALVE IN A CLOSING DIRECTION WHEN THE ENGINE ROTATIONAL SPEED EXCEEDS A PREDETERMINED VALUE, A PRESSURISING VALVE BY WAY OF WHICH THE FUEL WHICH HAS PASSED SAID THROTTLE VALVE PASSES TO THE SECOND FUEL CONDUIT, A SPRING WHICH URGES THE PRESSURISING VALVE TOWARDS THE CLOSED POSITION, A RESTRICTED BY-PASS PASSAGE WHICH BYPASSES THE PRESSURISING VALVE AND ESTABLISHES RESTRICTED COMMUNICATION BETWEEN THE FIRST AND SECOND FUEL CONDUITS.
References Cited (Backward Citations)
US2644513A
Cited
US2702560A
Cited
US2612944A
Cited
US2742755A
Cited
US2647847A
Cited
US2871659A
Cited
US2955538A
Cited
US2960154A
Cited
US2857741A
Cited
US2988883A
Cited
US3076311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |