US3587230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine control apparatus
Assignee: Honeywell Inc
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Filing: 1967-07-13
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Granted: 1971-06-28
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Expires: 1987-07-13
Abstract
Abstract A CLOSED LOOP FLUID STALL PREVENTION CIRCUIT FOR A TURBOJET ENGINE CONTROL SYSTEM COMPRISING A TEMPERATURE SENSOR, A SPEED SENSOR AND A FUNCTION GENERATOR. THE FUNCTION GENERATOR CONVERTS AN ENGINE SPEED SIGNAL FROM THE SPEED SENSOR INTO A REFERENCE TEMPERATURE SIGNAL. TE REFERENCE TEMPERATURE SIGNAL IS COMBINED WITH A TURBINE INLET TEMPERATURE SIGNAL FROM THE TEMPERATURE SENSOR TO PROVIDE AN OUTPUT WHICH IS USED TO CONTROL A FUEL VALVE.
Inventors
- 👤 Ross D Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:26
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/002
Claims Analysis
Total Claims: 0
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |