Patent US3239697A successfully refreshed from Google Patents.
US3239697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric generator
Assignee: Avco Corp
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Filing: 1960-12-30
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Granted: 1966-03-08
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Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Zdenek J J Stekly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:42
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/202; H01F6/00; H02; H02K; H02K44/00; H02K44/08; H02K44/085; H02K44/16; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/876; Y10S505/877; Y10S505/878
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A MAGNETOHYDRODYNAMIC GENERATOR FOR GENERATING AN ELECTROMOTIVE FORCE BY RELATIVE MOVEMENT OF AN ELECTRICALLY CONDUCTIVE GAS AND A MAGNETIC FLUX THE COMBINATION COMPRISING: A DUCT FOR CONVEYING THE ELECTRICALLY CONDUCTIVE GAS; ELECTRODES WITHIN THE DUCT FOR CONDUCTING ELECTRIC CURRENT UNDER THE INFLUENCE OF THE ELECTROMOTIVE FORCE; COIL MEANS SUBSTANTIALLY SURROUNDING AT LEAST A PORTION OF SAID DUCT FOR SUPPLYING MAGNETIC FLUX THEREACROSS; AND MEANS FOR PASSING A COOLANT THROUGH SAID COIL IN THE DIRECTION OF THE INLET OF SAID DUCT TO COOL SAID COIL AS A WHOLE ALONG SAID DUCT TO ABOUT ITS OPTIMUM CRYOGENIC TEMPERATURE.
Claim 2
Dependent Claim
97 words
IN A MAGNETOHYDRODYNAMIC GENERATOR FOR GENERATING AN ELECTROMOTIVE FORCE BY RELATIVE MOVEMENT OF AN ELECTRICALLY CONDUCTIVE GAS AND A MAGNETIC FLUX THE COMBINATION COMPRISING: A DUCT FOR CONVEYING THE ELECTRICALLY CONDUCTIVE GAS; ELECTRODES WITHIN THE DUCT FOR CONDUCTING ELECTRIC CURRENT UNDER THE INFLUENCE OF THE ELECTROMOTIVE FORCE; COIL MEANS SUBSTANTIALLY SURROUNDING AT LEAST A PORTION OF SAID DUCT FOR SUPPLYING MAGNETIC FLUX THEREACROSS; AND MEANS FOR PASSING A COOLANT THROUGH SAID COIL IN THE DIRECTION OF THE INLET OF SAID DUCT TO COOL SAID COIL AS A WHOLE ALONG SAID DUCT TO ABOUT ITS OPTIMUM CRYOGENIC TEMPERATURE.
References Cited (Backward Citations)
US1084594A
Cited
FR515033A
Cited
FR1161079A
Cited
US2929943A
Cited
US2959688A
Cited
US3091709A
Cited
US2986905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |