US3373561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine powerplant
Assignee: Rolls Royce PLC
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Filing: 1966-10-14
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Granted: 1968-03-19
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Expires: 1986-10-14
Abstract
No abstract record available.
Inventors
- 👤 Jubb Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:56
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/42; F01; F01K; F01K23/00; F01K23/12; F01K23/16; F02C6/00; F02C6/02; F02C9/16; F02C9/32; F26; F26B; F26B11/00; F26B11/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
POWERPLANT COMPRISING AT LEAST ONE GAS TURBINE ENGINE, A FUEL SUPPLY THEREFOR, A PLENUM CHAMBER WHICH IS ARRANGED TO RECEIVE EXHAUST GASES FROM THE ENGINE AND WHICH HAS A PLURALITY OF OUTLETS THROUGH EACH OF WHICH THE EXHAUST GASES MAY BE DISCHARGED, A PLURALITY OF FREE POWER TURBINES WHICH ARE RESPECTIVELY MOUNTED IN THE OUTLETS, AND CONTROL MEANS, RESPONSIVE TO CHANGES IN THE ROTATIONAL SPEEDS OF THE FREE POWER TURBINES, FOR EFFECTING ADJUSTMENT OF THE FUEL SUPPLY TO THE ENGINE, SAID CONTROL MEANS COMPRISING OUTLET AREA ADJUSTMENT DEVICES FOR ALTERING THE EFFECTIVE AREAS OF THE RESPECTIVE OUTLETS SO AS TO ADJUST THE ROTATIONAL SPEEDS OF THE RESPECTIVE FREE POWER TURBINES, AND MEANS INTERCONNECTING THE OUTLET AREA ADJUSTMENT DEVICES SO THAT INCREASES AND DECREASES IN ONE SAID AREA ARE RESPECTIVELY ACCOMPANIED BY DECREASES AND INCREASES IN ANY OTHER SAID AREA, WHEREBY THE TOTAL EFFECTIVE AREA OF ALL THE OUTLETS, PRIOR TO THE SAID ADJUSTMENT OF THE FUEL SUPPLY, IS MAINTAINED SUBSTANTIALLY CONSTANT.
Claim 2
Dependent Claim
161 words
POWERPLANT COMPRISING AT LEAST ONE GAS TURBINE ENGINE, A FUEL SUPPLY THEREFOR, A PLENUM CHAMBER WHICH IS ARRANGED TO RECEIVE EXHAUST GASES FROM THE ENGINE AND WHICH HAS A PLURALITY OF OUTLETS THROUGH EACH OF WHICH THE EXHAUST GASES MAY BE DISCHARGED, A PLURALITY OF FREE POWER TURBINES WHICH ARE RESPECTIVELY MOUNTED IN THE OUTLETS, AND CONTROL MEANS, RESPONSIVE TO CHANGES IN THE ROTATIONAL SPEEDS OF THE FREE POWER TURBINES, FOR EFFECTING ADJUSTMENT OF THE FUEL SUPPLY TO THE ENGINE, SAID CONTROL MEANS COMPRISING OUTLET AREA ADJUSTMENT DEVICES FOR ALTERING THE EFFECTIVE AREAS OF THE RESPECTIVE OUTLETS SO AS TO ADJUST THE ROTATIONAL SPEEDS OF THE RESPECTIVE FREE POWER TURBINES, AND MEANS INTERCONNECTING THE OUTLET AREA ADJUSTMENT DEVICES SO THAT INCREASES AND DECREASES IN ONE SAID AREA ARE RESPECTIVELY ACCOMPANIED BY DECREASES AND INCREASES IN ANY OTHER SAID AREA, WHEREBY THE TOTAL EFFECTIVE AREA OF ALL THE OUTLETS, PRIOR TO THE SAID ADJUSTMENT OF THE FUEL SUPPLY, IS MAINTAINED SUBSTANTIALLY CONSTANT.
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |