US3275008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulation of hydraulic turbines
Assignee: English Electric Co Ltd
•
Filing: 1965-07-27
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Granted: 1966-09-27
•
Expires: 1985-07-27
Abstract
No abstract record available.
Inventors
- 👤 Kerensky Gleb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:45
CPC Classifications
F; F03; F03B; F03B15/00; F03B15/02; F03B15/20; F03B15/04; F03B15/06; F03B15/08; G; G05; G05D; G05D13/00; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A DEVICE FOR REGULATING WATER FLOW THROUGH A WATER TURBINE HAVING A PENSTOCK FOR LEADING A FLOW OF WATER TO THE TURBINE, COMPRISING A GOVERNOR, QUANTITY CONTROL MEANS CONNECTED TO SAID GOVERNOR TO REDUCE THE FLOW OF WATER IN THE PENSTOCK ON INCREASE OF SPED SENSED BY SAID GOVERNOR, FIRST RELIEF VALVE MEANS CONNECTED TO THE PENSTOCK TO VENT WATER THEREFROM AND CONNECTED TO SAID GOVERNOR TO BE OPERATED THEREBY IN THE SENSE OF OPENING ON INCREASE OF SPEED, SECOND RELIEF VALVE MEANS CONNECTED TO THE PENSTOCK TO VENT WATER THEREFROM, SAID SECOND RELIEF VALVE MEANS HAVING A STROKE WHICH IS ONLY A SMALL PART OF SAID GOVERNOR STROKE AND HAVING A FLOW CAPACITY WHICH IS ONLY A SMALL FRACTION OF THE FLOW CAPACITY OF SAID FIRST RELIEF VALVE MEANS, AND A YIELDABLE CONNECTION BETWEEN SAID SECOND RELIEF VALVE MEANS AND SAID GOVERNOR TO OPERATE SAID SECOND RELIEF VALVE MEANS IN THE SENSE OF OPENING ON INCREASE OF SPEED, AND TO ALLOW SAID GOVERNOR TO OVER-RUN SAID SECOND RELIEF VALVE MEANS WHEN THE LATTER REACHES THE END OF ITS STROKE.
Claim 2
Independent Claim
180 words
A DEVICE FOR REGULATING WATER FLOW THROUGH A WATER TURBINE HAVING A PENSTOCK FOR LEADING A FLOW OF WATER TO THE TURBINE, COMPRISING A GOVERNOR, QUANTITY CONTROL MEANS CONNECTED TO SAID GOVERNOR TO REDUCE THE FLOW OF WATER IN THE PENSTOCK ON INCREASE OF SPED SENSED BY SAID GOVERNOR, FIRST RELIEF VALVE MEANS CONNECTED TO THE PENSTOCK TO VENT WATER THEREFROM AND CONNECTED TO SAID GOVERNOR TO BE OPERATED THEREBY IN THE SENSE OF OPENING ON INCREASE OF SPEED, SECOND RELIEF VALVE MEANS CONNECTED TO THE PENSTOCK TO VENT WATER THEREFROM, SAID SECOND RELIEF VALVE MEANS HAVING A STROKE WHICH IS ONLY A SMALL PART OF SAID GOVERNOR STROKE AND HAVING A FLOW CAPACITY WHICH IS ONLY A SMALL FRACTION OF THE FLOW CAPACITY OF SAID FIRST RELIEF VALVE MEANS, AND A YIELDABLE CONNECTION BETWEEN SAID SECOND RELIEF VALVE MEANS AND SAID GOVERNOR TO OPERATE SAID SECOND RELIEF VALVE MEANS IN THE SENSE OF OPENING ON INCREASE OF SPEED, AND TO ALLOW SAID GOVERNOR TO OVER-RUN SAID SECOND RELIEF VALVE MEANS WHEN THE LATTER REACHES THE END OF ITS STROKE.
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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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |