US4608860A
Expired / Lapsed
US
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Stall detector
Assignee: General Electric Co
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Filing: 1985-07-01
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Granted: 1986-09-02
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Expires: 2005-07-01
Abstract
Abstract Compressor discharge pressure (CDP) in a gas turbine engine is sensed. A fall in CDP is interpreted as indicating compressor stall.
Inventors
- 👤 Michael G. Charrier
- 👤 Peter G. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:24
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/02; F01D17/08; F04; F04D; F04D27/00; F04D27/001
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
50 words
A sensor for a gas turbine engine having a Compressor Discharge Pressure (CDP), comprising: (a) accumulator means for accumulating CDP; (b) sensing means for sensing a drop in CDP below the accumulated CDP; and (c) indicator means for producing a signal in response to the drop in CDP when sensed.
Claim 2
Dependent Claim
50 words
A sensor for a gas turbine engine having a Compressor Discharge Pressure (CDP), comprising: (a) accumulator means for accumulating CDP; (b) sensing means for sensing a drop in CDP below the accumulated CDP; and (c) indicator means for producing a signal in response to the drop in CDP when sensed.
Claim 3
Dependent Claim
95 words
A sensor for detecting stall in a gas turbine engine, comprising: (a) a sealed container; (b) a diaphragm for dividing the container into two chambers; (c) a first line for porting compressor discharge pressure (CDP) into the first chamber; (d) a second line for porting CDP into the second chamber; (e) a check valve interconnected in the second line for maintaining pressure in the second chamber; and (f) switch means coupled to the diaphragm for detecting deflection of the diaphragm occurring when the pressure in the second chamber exceeds the pressure in the first chamber.
Claim 4
Dependent Claim
95 words
A sensor for detecting stall in a gas turbine engine, comprising: (a) a sealed container; (b) a diaphragm for dividing the container into two chambers; (c) a first line for porting compressor discharge pressure (CDP) into the first chamber; (d) a second line for porting CDP into the second chamber; (e) a check valve interconnected in the second line for maintaining pressure in the second chamber; and (f) switch means coupled to the diaphragm for detecting deflection of the diaphragm occurring when the pressure in the second chamber exceeds the pressure in the first chamber.
Claim 5
Dependent Claim
27 words
A sensor according to claim 2 and further comprising a valve for connecting the first chamber with the second chamber to thereby equalize the pressures in both.
References Cited (Backward Citations)
US3867717A
Cited
US4216672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-01 | 1990-03-03 | 1990-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-01 | 1994-03-03 | 1994-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-01 | 1998-03-03 | 1998-09-02 | $7700.00 | Window Closed / Lapsed |