Patent US3279174A successfully refreshed from Google Patents.
US3279174A
Expired / Lapsed
US
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Cylindrical water turbine
Assignee: Hitachi Ltd
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Filing: 1964-03-11
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Granted: 1966-10-18
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 Yokoi Nobuyasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:58
CPC Classifications
F; F03; F03B; F03B13/00; F03B13/10; F03B13/105; F05; F05B; F05B2250/00; F05B2250/20; F05B2250/23; F05B2250/231; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A WATER TURBINE GENERATOR PLANT COMPRISING A HORIZONTAL GENERATOR, A GENERALLY CYLINDRICAL CASING FOR HOUSING THE GENERATOR, A RUNNER ASSOCIATED WITH THE GENERATOR AND ROTATABLY MOUNTED AT THE END OF THE CASING, AN OUTER CASING SURROUNDING THE FIRST NAMED CASING AND DEFINING THEREWITH A SPACE AROUND THE FIRST NAMED CASING, SAID SPACE FORMING A WATER PASSAGE TO CONDUCT WATER TO THE RUNNER PARALLELLY WITH THE AXIS OF THE RUNNER AND THE FIRST NAMED CASING AND DEFINING A FURTHER SPACE THEREBETWEEN WHICH ACTERIZED IN THAT THE SUPPORTER IS IN THE FORM OF TWO SUBSTANTIALLY IDENTICAL PARALLEL SUPPORTING LEGS OF VARYING NARROW WIDTH ARRANGED UNDERNEATH THE FIRST NAMED CASING AND DEFINING A FURTHER SPACE THEREBETWEEN WHICH CONSTITUTES A FURTHER WATER PASSAGE LENGTHWISE OF THE AXIS OF THE FIRST NAMED CASING, THE MINIMUM WIDTH OF SAID SPACE AND THE MAXIMUM WIDTH OF EACH OF SAID LEGS BEING APPROXIMATELY EQUAL, THUS COMPRISING MEANS FACILITATING A UNIFORM FLOW OF WATER THROUGH SAID SPACES AGAINST SAID RUNNER.
Claim 2
Dependent Claim
161 words
A WATER TURBINE GENERATOR PLANT COMPRISING A HORIZONTAL GENERATOR, A GENERALLY CYLINDRICAL CASING FOR HOUSING THE GENERATOR, A RUNNER ASSOCIATED WITH THE GENERATOR AND ROTATABLY MOUNTED AT THE END OF THE CASING, AN OUTER CASING SURROUNDING THE FIRST NAMED CASING AND DEFINING THEREWITH A SPACE AROUND THE FIRST NAMED CASING, SAID SPACE FORMING A WATER PASSAGE TO CONDUCT WATER TO THE RUNNER PARALLELLY WITH THE AXIS OF THE RUNNER AND THE FIRST NAMED CASING AND DEFINING A FURTHER SPACE THEREBETWEEN WHICH ACTERIZED IN THAT THE SUPPORTER IS IN THE FORM OF TWO SUBSTANTIALLY IDENTICAL PARALLEL SUPPORTING LEGS OF VARYING NARROW WIDTH ARRANGED UNDERNEATH THE FIRST NAMED CASING AND DEFINING A FURTHER SPACE THEREBETWEEN WHICH CONSTITUTES A FURTHER WATER PASSAGE LENGTHWISE OF THE AXIS OF THE FIRST NAMED CASING, THE MINIMUM WIDTH OF SAID SPACE AND THE MAXIMUM WIDTH OF EACH OF SAID LEGS BEING APPROXIMATELY EQUAL, THUS COMPRISING MEANS FACILITATING A UNIFORM FLOW OF WATER THROUGH SAID SPACES AGAINST SAID RUNNER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |