US3199293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two shaft gas turbine control system
Assignee: General Electric Co
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Filing: 1963-08-15
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Granted: 1965-08-10
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Expires: 1983-08-15
Abstract
No abstract record available.
Inventors
- 👤 Neal E Starkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:38
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/16; F02C9/20; F02C9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A TWO-SHAFT GAS TURBINE OF THE TYPE HAVING A TURBINE-COMPRESSOR DISCHARGING MOTIVE FLUID THROUGH A VARIABLE NOZZLE TO A MECHANICALLY INDEPENDENT LOAD TURBINE, TO COMBINATION OF: (A) FIRST MEANS RESPONSIVE TO TURBINE-COMPRESSOR SPEED, (B) SECOND MEANS RESPONSIVE TO GAS TURBINE EXHAUST TEMPERATURE, (C) SERVO MEANS CONTROLLED BY SAID FIRST AND SECOND MEANS TO POSITION THE VARIABLE NOZZLE IN RESPONSE TO CHANGES IN TURBINE-COMPRESSOR SPEED AND EXHAUST TEMPERATURE, AND (D) ELECTRICAL CIRCUIT MEANS HAVING ELEMENTS THEREIN WHICH ARE ACTIVATED AT SELECTED TURBINE-COMPRESSOR SPEEDS BY SAID FIRST MEANS TO CHANGE THE CHARACTERISTICS OF SAID CIRCUIT MEANS FOR SELECTIVELY MODIFYING THE EFFECTS OF INCREMENTAL CHANGES OF TURBINE-COMPRESSOR SPEED AND EXHAUST TEMPERATURE ON SAID THIRD MEANS OVER DIFFERENT SELECTABLE RANGES OF TURBINECOMPRESSOR SPEED.
Claim 2
Dependent Claim
120 words
IN A TWO-SHAFT GAS TURBINE OF THE TYPE HAVING A TURBINE-COMPRESSOR DISCHARGING MOTIVE FLUID THROUGH A VARIABLE NOZZLE TO A MECHANICALLY INDEPENDENT LOAD TURBINE, TO COMBINATION OF: (A) FIRST MEANS RESPONSIVE TO TURBINE-COMPRESSOR SPEED, (B) SECOND MEANS RESPONSIVE TO GAS TURBINE EXHAUST TEMPERATURE, (C) SERVO MEANS CONTROLLED BY SAID FIRST AND SECOND MEANS TO POSITION THE VARIABLE NOZZLE IN RESPONSE TO CHANGES IN TURBINE-COMPRESSOR SPEED AND EXHAUST TEMPERATURE, AND (D) ELECTRICAL CIRCUIT MEANS HAVING ELEMENTS THEREIN WHICH ARE ACTIVATED AT SELECTED TURBINE-COMPRESSOR SPEEDS BY SAID FIRST MEANS TO CHANGE THE CHARACTERISTICS OF SAID CIRCUIT MEANS FOR SELECTIVELY MODIFYING THE EFFECTS OF INCREMENTAL CHANGES OF TURBINE-COMPRESSOR SPEED AND EXHAUST TEMPERATURE ON SAID THIRD MEANS OVER DIFFERENT SELECTABLE RANGES OF TURBINECOMPRESSOR SPEED.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |