US3342195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed and motive fluid pressure control system for steam turbines
Assignee: General Electric Co
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Filing: 1964-08-11
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Granted: 1967-09-19
•
Expires: 1984-08-11
Abstract
No abstract record available.
Inventors
- 👤 James B Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:12
CPC Classifications
F; F01; F01K; F01K7/00; F01K7/34; F01K7/345; H; H02; H02P; H02P23/00; H02P23/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN COMBINATION: A TURBINE HAVING AT LEAST ONE VALVE WITH ITS POSITION CONTROLLED BY AN ELECTRICAL SIGNAL, MEANS RESPONSIVE TO AN OPERATING CONDITION OF THE TURBINE FURNISHING AN ELECTRICAL ERROR SIGNAL REPRESENTING A DEVIATION FROM A DESIRED SELECTABLE OPERATING CONDITION DUE TO A CHANGE IN EXTERNAL DEMAND ON THE TURBINE, MEANS SUMMING PORTIONS OF SAID ERROR SIGNAL AND THE TIME INTEGRAL OF SAID ERROR SIGNAL COMPRISING A PARALLEL-CONNECTED RESISTANCE AND CAPACITANCE CONNECTED TO THE INPUT OF AN INTEGRATING OPERATIONAL AMPLIFIER AND SUPPLYING A RESULTANT SIGNAL TO THE VALVE CONTROLLING MEANS, AND MEANS FOR SUPPLYING A SELECTABLE PORTION OF SAID RESULTANT SIGNAL TO THE INPUT OF THE SUMMING MEANS SO
Claim 2
Dependent Claim
109 words
IN COMBINATION: A TURBINE HAVING AT LEAST ONE VALVE WITH ITS POSITION CONTROLLED BY AN ELECTRICAL SIGNAL, MEANS RESPONSIVE TO AN OPERATING CONDITION OF THE TURBINE FURNISHING AN ELECTRICAL ERROR SIGNAL REPRESENTING A DEVIATION FROM A DESIRED SELECTABLE OPERATING CONDITION DUE TO A CHANGE IN EXTERNAL DEMAND ON THE TURBINE, MEANS SUMMING PORTIONS OF SAID ERROR SIGNAL AND THE TIME INTEGRAL OF SAID ERROR SIGNAL COMPRISING A PARALLEL-CONNECTED RESISTANCE AND CAPACITANCE CONNECTED TO THE INPUT OF AN INTEGRATING OPERATIONAL AMPLIFIER AND SUPPLYING A RESULTANT SIGNAL TO THE VALVE CONTROLLING MEANS, AND MEANS FOR SUPPLYING A SELECTABLE PORTION OF SAID RESULTANT SIGNAL TO THE INPUT OF THE SUMMING MEANS SO
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |