Patent US4424273A successfully refreshed from Google Patents.
US3085397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine fuel system
Assignee: Rolls Royce PLC
•
Filing: 1958-07-22
•
Granted: 1963-04-16
•
Expires: 1978-07-22
Abstract
No abstract record available.
Inventors
- 👤 Jubb Albert
- 👤 Johnson Christopher Linley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:02
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/32; F02C9/30; F02C9/34; Y; Y10; Y10T; Y10T137/00; Y10T137/6198; Y10T137/6253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A GAS TURBINE ENGINE FUEL SYSTEM FOR CONTROLLING THE SUPPLY OF PRESSURIZED FUEL FROM A SOURCE THEREOF TO THE MAIN BURNERS OF A GAS TURBINE ENGINE COMPRISING MEANS PROVIDING A METERING ORIFICE, A DUCT FOR SUPPLYING PRESSURIZED FUEL FROM SAID SOURCE TO SAID METERING ORIFICE, A FIRST MEANS RESPONSIVE TO ENGINE ROTATIONAL SPEED MECHANICALLY CONNECTED TO THE MEANS PROVIDING THE METERING ORIFICE FOR REDUCING THE SIZE OF THE METERING ORIFICE WHEN A PREDETERMINED ENGINE ROTATIONAL SPEED IS REACHED, MEANS MECHANICALLY CONNECTED TO THE MEANS PROVIDING THE METERING ORIFICE FOR INCREASING THE SIZE OF THE METERING ORIFICE IN FUNCTIONAL RELATIONSHIP WITH INCREASE IN THE RATIO OF THE OUTLET AND INTAKE PRESSURES OF A COMPRESSOR OF THE ENGINE, A CONDUIT FOR CONVEYING FUEL FROM THE DOWNSTREAM
Claim 2
Dependent Claim
124 words
A GAS TURBINE ENGINE FUEL SYSTEM FOR CONTROLLING THE SUPPLY OF PRESSURIZED FUEL FROM A SOURCE THEREOF TO THE MAIN BURNERS OF A GAS TURBINE ENGINE COMPRISING MEANS PROVIDING A METERING ORIFICE, A DUCT FOR SUPPLYING PRESSURIZED FUEL FROM SAID SOURCE TO SAID METERING ORIFICE, A FIRST MEANS RESPONSIVE TO ENGINE ROTATIONAL SPEED MECHANICALLY CONNECTED TO THE MEANS PROVIDING THE METERING ORIFICE FOR REDUCING THE SIZE OF THE METERING ORIFICE WHEN A PREDETERMINED ENGINE ROTATIONAL SPEED IS REACHED, MEANS MECHANICALLY CONNECTED TO THE MEANS PROVIDING THE METERING ORIFICE FOR INCREASING THE SIZE OF THE METERING ORIFICE IN FUNCTIONAL RELATIONSHIP WITH INCREASE IN THE RATIO OF THE OUTLET AND INTAKE PRESSURES OF A COMPRESSOR OF THE ENGINE, A CONDUIT FOR CONVEYING FUEL FROM THE DOWNSTREAM
References Cited (Backward Citations)
GB646780A
Cited
US2593536A
Cited
US2668416A
Cited
US2670599A
Cited
US2763126A
Cited
US2714803A
Cited
US2836957A
Cited
US2861420A
Cited
US2858700A
Cited
US2950596A
Cited
US2856754A
Cited
US2938341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |