US3114240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque indicator and control for turbo-shaft gas turbine engine
Assignee: Bendix Corp
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Filing: 1959-09-04
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Granted: 1963-12-17
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Expires: 1979-09-04
Abstract
No abstract record available.
Inventors
- 👤 Donald W Howard
- 👤 Warner C Wintrode
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:44
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
FOR USE WITH A GAS TURBINE ENGINE HAVING A COMPRESSOR, A COMBUSTION CHAMBER, A COMPRESSOR TURBINE AND A POWER TURBINE, AND A MAIN FUEL CONTROL FOR SUPPLYING FUEL TO SAID COMBUSTION CHAMBER, A TORQUE LIMITER COMPRISING A BY-PASS VALVE DOWNSTREAM OF SAID FUEL CONTROL, AN ELECTRO-RESPONSIVE DEVICE FOR DRIVING SAID VALVE TO CONTROL THE AMOUNT OF FUEL BY-PASSED, MEANS INCLUDING A PLURALITY OF THERMOCOUPLES CONNECTED IN A BUCKING CONFIGURATION FOR PRODUCING A VOLTAGE PROPORTIONAL TO THE TEMPERATURE DIFFERENCE ACROSS THE POWER TURBINE, MEANS FOR AMPLIFYING SAID TEMPERATURE DIFFERENCE SIGNAL AND FOR IMPRESSING SAID SIGNAL ACROSS A FIRST POTENTIOMETER, PRESSURE SENSING MEANS RESPONSIVE TO COMPRESSOR DISCHARGE PRESSURE CONNECTED TO THE SLIDER OF SAID POTENTIOMETER TO VARY THE OUTPUT THEREOF WITH CHARGES IN COMPRESSOR DISCHARGE PRESSURE, AMPLIFICATION MEANS FOR AMPLIFYING VOLTAGE OUTPUT OF SAID POTENTIOMETER, MEANS PRODUCING A DIRECT CURRENT SIGNAL DIRECTLY PROPORTIONAL TO INSTANTANEOUS VALUES OF ROTATIONAL SPEED OF THE POWER TURBINE AND IMPRESSING THIS SIGNAL ACROSS A SECOND POTENTIOMETER, MEANS CONNECTING THE SLIDER OF SAID SECOND POTENTIOMETER TO THE INPUT OF SAID SECOND NAMED AMPLIFICATION MEANS, MOTOR MEANS DRIVEN BY SAID SECOND AMPLIFICATION MEANS FOR POSITIONING THE SLIDER OF SAID SECOND POTENTIOMETER, A THIRD POTENTIOMETER CONNECTED
Claim 2
Dependent Claim
196 words
FOR USE WITH A GAS TURBINE ENGINE HAVING A COMPRESSOR, A COMBUSTION CHAMBER, A COMPRESSOR TURBINE AND A POWER TURBINE, AND A MAIN FUEL CONTROL FOR SUPPLYING FUEL TO SAID COMBUSTION CHAMBER, A TORQUE LIMITER COMPRISING A BY-PASS VALVE DOWNSTREAM OF SAID FUEL CONTROL, AN ELECTRO-RESPONSIVE DEVICE FOR DRIVING SAID VALVE TO CONTROL THE AMOUNT OF FUEL BY-PASSED, MEANS INCLUDING A PLURALITY OF THERMOCOUPLES CONNECTED IN A BUCKING CONFIGURATION FOR PRODUCING A VOLTAGE PROPORTIONAL TO THE TEMPERATURE DIFFERENCE ACROSS THE POWER TURBINE, MEANS FOR AMPLIFYING SAID TEMPERATURE DIFFERENCE SIGNAL AND FOR IMPRESSING SAID SIGNAL ACROSS A FIRST POTENTIOMETER, PRESSURE SENSING MEANS RESPONSIVE TO COMPRESSOR DISCHARGE PRESSURE CONNECTED TO THE SLIDER OF SAID POTENTIOMETER TO VARY THE OUTPUT THEREOF WITH CHARGES IN COMPRESSOR DISCHARGE PRESSURE, AMPLIFICATION MEANS FOR AMPLIFYING VOLTAGE OUTPUT OF SAID POTENTIOMETER, MEANS PRODUCING A DIRECT CURRENT SIGNAL DIRECTLY PROPORTIONAL TO INSTANTANEOUS VALUES OF ROTATIONAL SPEED OF THE POWER TURBINE AND IMPRESSING THIS SIGNAL ACROSS A SECOND POTENTIOMETER, MEANS CONNECTING THE SLIDER OF SAID SECOND POTENTIOMETER TO THE INPUT OF SAID SECOND NAMED AMPLIFICATION MEANS, MOTOR MEANS DRIVEN BY SAID SECOND AMPLIFICATION MEANS FOR POSITIONING THE SLIDER OF SAID SECOND POTENTIOMETER, A THIRD POTENTIOMETER CONNECTED
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |