US3344602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel purging system for gas turbine engines
Assignee: Rolls Royce PLC
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Filing: 1965-11-18
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Granted: 1967-10-03
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Expires: 1985-11-18
Abstract
No abstract record available.
Inventors
- 👤 Davies David Omri
- 👤 Parker Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:35
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/22; F02C7/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
SYSTEM FOR PURGING FUEL CONDUITS IN A GAS TURBINE ENGINE HAVING A COMBUSTOR, FUEL BURNERS FOR SAID COMBUSTOR AND A FIRST CONDUIT FOR SUPPLYING A FUEL UNDER PRESSURE TO THE BURNERS, COMPRISING: A RESERVOIR FOR CONTAINING AIR UNDER PRESSURE, A SECOND CONDUIT FOR SUPPLYING AIR UNDER PRESSURE TO SAID RESERVOIR, SAID SECOND CONDIUT BEING IN COMMUNICATION WITH A COMPRESSOR OF THE GAS TURBINE ENGINE SO AS TO RECEIVE COMPRESSED AIR FROM THE COMPRESSOR FOR DELIVERY TO THE RESERVOIR, SAID COMPRESSOR ALSO SUPPLYING AIR TO SAID COMBUSTOR, A FIRST PRESSURE RESPONSIVE VALVE CONTROLLING FLUID FLOW BETWEEN SAID FIRST CONDUIT AND SAID RESERVOIR, SAID FIRST PRESSURE RESPONSIVE VALVE BEING CLOSED DURING NORMAL OPERATION OF THE GAS TURBINE ENGINE WHEN THE PRESSURE IN SAID FIRST CONDUIT EXCEEDS THAT OF SAID RESERVOIR BUT BEING OPENED TO ALLOW PASSAGE OF AIR FROM SAID RESERVOIR TO SAID FIRST CONDUIT ONLY WHEN THE PRESSURE OF FUEL IN THE FIRST CONDUIT IS LESS THAN THE PRESSURE OF AIR IN THE RESEVOIR BY A PREDETERMINED AMOUNT, AND
Claim 2
Dependent Claim
168 words
SYSTEM FOR PURGING FUEL CONDUITS IN A GAS TURBINE ENGINE HAVING A COMBUSTOR, FUEL BURNERS FOR SAID COMBUSTOR AND A FIRST CONDUIT FOR SUPPLYING A FUEL UNDER PRESSURE TO THE BURNERS, COMPRISING: A RESERVOIR FOR CONTAINING AIR UNDER PRESSURE, A SECOND CONDUIT FOR SUPPLYING AIR UNDER PRESSURE TO SAID RESERVOIR, SAID SECOND CONDIUT BEING IN COMMUNICATION WITH A COMPRESSOR OF THE GAS TURBINE ENGINE SO AS TO RECEIVE COMPRESSED AIR FROM THE COMPRESSOR FOR DELIVERY TO THE RESERVOIR, SAID COMPRESSOR ALSO SUPPLYING AIR TO SAID COMBUSTOR, A FIRST PRESSURE RESPONSIVE VALVE CONTROLLING FLUID FLOW BETWEEN SAID FIRST CONDUIT AND SAID RESERVOIR, SAID FIRST PRESSURE RESPONSIVE VALVE BEING CLOSED DURING NORMAL OPERATION OF THE GAS TURBINE ENGINE WHEN THE PRESSURE IN SAID FIRST CONDUIT EXCEEDS THAT OF SAID RESERVOIR BUT BEING OPENED TO ALLOW PASSAGE OF AIR FROM SAID RESERVOIR TO SAID FIRST CONDUIT ONLY WHEN THE PRESSURE OF FUEL IN THE FIRST CONDUIT IS LESS THAN THE PRESSURE OF AIR IN THE RESEVOIR BY A PREDETERMINED AMOUNT, AND
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |