Patent US2669697A successfully refreshed from Google Patents.
Patent US3097488A successfully refreshed from Google Patents.
US3097488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine control system
Assignee: General Electric Co
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Filing: —
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Granted: 1963-07-16
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Expires: 1980-07-16
Abstract
No abstract record available.
Inventors
- 👤 Markus A Eggenberger
- 👤 Paul H Troutman
- 👤 Callan C Schenectady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:31
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/20; F01D17/22; F01D17/24; F01D21/00; F01D21/02; F01K; F01K7/00; F01K7/16; F01K7/22; F01K7/24; H; H02; H02P; H02P23/00; H02P23/16; H02P9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A CONTROL SYSTEM FOR A PRIME MOVER SUPPLYING POWER TO A LOAD ALSO SUPPLIED WITH POWER BY OTHER PRIME MOVERS, THE COMBINATION OF: VALVE MEANS FOR CONTROLLING THE FLOW OF MOTIVE FLUID TO THE PRIME MOVER, MEANS SUPPLYING A FIRST REFERENCE ELECTRIC SIGNAL REPRESENTING A DESIRED NORMAL OPERATING SPEED, SPEED RESPONSIVE MEANS SUPPLYING A SECOND ELECTRIC SIGNAL REPRESENTING ACTUAL PRIME MOVER SPEED, MEANS COMPARING SAID FLUID AND SECOND SIGNALS TO SUPPLY A THIRD ELECTRIC SIGNAL REPRESENTING A SPEED ERROR SIGNAL, ADJUSTABLE MULTIPLIER MEANS MODIFYING THE SPEED ERROR SIGNAL TO GIVE A DESIRED SPEED REGULATION, ELECTRO-HYDRAULIC SERVO MEANS POSITIONING SAID VALVE MEANS IN RESPONSE TO SAID MODIFIED SPEED ERROR SIGNAL, AND MEANS SUPPLYING A FOURTH REFERENCE ELECTRIC SIGNAL REPRESENTING A DESIRED LOAD ON THE PRIME MOVER, SAID LOAD SIGNAL BEING SUPERIMPOSED ON THE SPEED ERROR SIGNAL AFTER IT HAS BEEN MODIFIED BY SAID MULTIPLIER MEANS, WHEREBY THE LOAD APPLIED FOR A GIVEN MAGNITUDE OF LOAD REFERENCE SIGNAL IS SUBSTANTIALLY THE SAME REGARDLESS OF THE SETTING OF SAID MULTIPLIER MEANS.
Claim 2
Dependent Claim
169 words
IN A CONTROL SYSTEM FOR A PRIME MOVER SUPPLYING POWER TO A LOAD ALSO SUPPLIED WITH POWER BY OTHER PRIME MOVERS, THE COMBINATION OF: VALVE MEANS FOR CONTROLLING THE FLOW OF MOTIVE FLUID TO THE PRIME MOVER, MEANS SUPPLYING A FIRST REFERENCE ELECTRIC SIGNAL REPRESENTING A DESIRED NORMAL OPERATING SPEED, SPEED RESPONSIVE MEANS SUPPLYING A SECOND ELECTRIC SIGNAL REPRESENTING ACTUAL PRIME MOVER SPEED, MEANS COMPARING SAID FLUID AND SECOND SIGNALS TO SUPPLY A THIRD ELECTRIC SIGNAL REPRESENTING A SPEED ERROR SIGNAL, ADJUSTABLE MULTIPLIER MEANS MODIFYING THE SPEED ERROR SIGNAL TO GIVE A DESIRED SPEED REGULATION, ELECTRO-HYDRAULIC SERVO MEANS POSITIONING SAID VALVE MEANS IN RESPONSE TO SAID MODIFIED SPEED ERROR SIGNAL, AND MEANS SUPPLYING A FOURTH REFERENCE ELECTRIC SIGNAL REPRESENTING A DESIRED LOAD ON THE PRIME MOVER, SAID LOAD SIGNAL BEING SUPERIMPOSED ON THE SPEED ERROR SIGNAL AFTER IT HAS BEEN MODIFIED BY SAID MULTIPLIER MEANS, WHEREBY THE LOAD APPLIED FOR A GIVEN MAGNITUDE OF LOAD REFERENCE SIGNAL IS SUBSTANTIALLY THE SAME REGARDLESS OF THE SETTING OF SAID MULTIPLIER MEANS.
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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |