Patent US3365653A successfully refreshed from Google Patents.
US3365653A
Expired / Lapsed
US
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Electric current generation by means of thermionic energy converters
Assignee: National Research Development Corp UK
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Filing: 1964-10-30
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Granted: 1968-01-23
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Expires: 1984-10-30
Abstract
No abstract record available.
Inventors
- 👤 Gabor Dennis
- 👤 Kretsch Hans Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:56
CPC Classifications
H; H02; H02M; H02M11/00; H01; H01J; H01J45/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
AN ARRANGEMENT FOR GENERATING POLYPHASE ALTERNATING CURRENT COMPRISING AT LEAST ONE THERMIONIC ENERGY CONVERTER, N ALTERNATIVE OUTPUT PATHS FOR THE OUTPUT CURRENT FROM SAID AT LEAST ONE THERMIONIC ENERGY CONVERTER (WHERE N, IS A POSITIVE INTEGER), ALL OF SAID PATHS INCLUDING AT LEAST ONE THERMIONIC ENERGY CONVERTER OF THE TRIODETYPE AND A TRANSFORMER PRIMARY WINDING IN SERIES THEREWITH, THE TRANSFORMER PRIMARY WINDINGS IN SAID PATHS BEING CONNECTED TOGETHER IN STAR FORMATION, ALTERNATING CURRENT OUTPUT MEANS COUPLED TO SAID STAR-CONNECTED TRANSFORMER WINDINGS, AND SWITCHING MEANS FOR APPLYING CONTROL SIGNALS TO THE AUXILIARY ELECTRODES OF THE TRIODE-TYPE THERMIONIC ENERGY CONVERTERS IN EACH OF SAID PATHS IN TIME SEQUENCE, THE CONTROL SIGNALS SUPPLIED TO SUCCESSIVE PATHS BEING SPACED APART BY 2$/N RADIANS OF THE OUTPUT.
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) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |