US3300965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine fuel heating and oil cooling system
Assignee: Rolls Royce PLC
•
Filing: 1965-03-29
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Granted: 1967-01-31
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Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Sherlaw William
- 👤 Hensman George Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:30
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/22; F02C7/224; F02C7/12; F02C7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A GAS TURBINE ENGINE FUEL HEATING AND OIL COOLING SYSTEM COMPRISING FIRST AND SECOND HEAT EXCHANGERS; A FUEL SUPPLY CONTROL UNIT FOR CONTROLLING A SUPPLY OF FUEL TO THE ENGINE IN ACCORDANCE WITH AT LEAST ONE ENGINE VARIABLE; CONDUIT MEANS FOR PASSING FUEL SUCCESSIVELY THROUGH THE FIRST HEAT EXCHANGER, THE FUEL SUPPLY CONTROL UNIT, AND THE SECOND HEAT EXCHANGER; AND DUCTING FOR PASSING ENGINE OIL AS DESIRED THROUGH AT LEAST ONE SELECTED HEAT EXCHANGER, THE SAID DUCTING COMPRISING A BY-PASS PASSAGE WHICH BY-PASSES THE SECOND HEAT EXCHANGER AND VALVE MEANS CONTROLLING FLOW THROUGH THE SAID BY-PASS PASSAGE, THE ENGINE OIL PASSING THROUGH THE SAID FIRST HEAT EXCHANGER IN ALL POSITIONS OF THE SAID VALVE MEANS.
Claim 2
Dependent Claim
115 words
A GAS TURBINE ENGINE FUEL HEATING AND OIL COOLING SYSTEM COMPRISING FIRST AND SECOND HEAT EXCHANGERS; A FUEL SUPPLY CONTROL UNIT FOR CONTROLLING A SUPPLY OF FUEL TO THE ENGINE IN ACCORDANCE WITH AT LEAST ONE ENGINE VARIABLE; CONDUIT MEANS FOR PASSING FUEL SUCCESSIVELY THROUGH THE FIRST HEAT EXCHANGER, THE FUEL SUPPLY CONTROL UNIT, AND THE SECOND HEAT EXCHANGER; AND DUCTING FOR PASSING ENGINE OIL AS DESIRED THROUGH AT LEAST ONE SELECTED HEAT EXCHANGER, THE SAID DUCTING COMPRISING A BY-PASS PASSAGE WHICH BY-PASSES THE SECOND HEAT EXCHANGER AND VALVE MEANS CONTROLLING FLOW THROUGH THE SAID BY-PASS PASSAGE, THE ENGINE OIL PASSING THROUGH THE SAID FIRST HEAT EXCHANGER IN ALL POSITIONS OF THE SAID VALVE MEANS.
References Cited (Backward Citations)
GB253233A
Cited
US2731239A
Cited
DE956824C
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US3080716A
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US2865580A
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US2996883A
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US3147823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |