Patent US2790793A successfully refreshed from Google Patents.
Patent US3210639A successfully refreshed from Google Patents.
US3210639A
Expired / Lapsed
US
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Power control apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1962-06-05
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Granted: 1965-10-05
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Expires: 1982-06-05
Abstract
No abstract record available.
Inventors
- 👤 Lorin F Stringer
- 👤 Emil T Schonholzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:27
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
186 words
IN POWER CONTROL APPARATUS OPERATIVE TO CONTROL THE ENERGIZATION OF A LOAD BY AN ELECTRICAL POWER SOURCE, FIRST CONVERTER MEANS AND SECOND CONVERTER MEANS, WITH EACH VONVERTER MEANS INCLUDING A CONVERTER MEANS, WITH MEMBER HAVING A VARIABLE CONDUCTION PERIOD, A FIRST IMPEDENCE MEMBER CONNECTED WITH THE LOAD TO PROVIDE A FIRST CONTROL SIGNAL IN ACCORDANCE WITH THE CURRENT SUPPLIED TO SAID LOAD, A SECOND IMPEDENCE MEMBER CONNECTED WITH THE FIRST CONVERTER MEANS FOR PROVIDING A SECOND CONTROL SIGNAL IN ACCORDANCE WITH THE CURRENT SUPPLIED TO SAID LOAD BY SAID FIRST CONVERTER MEANS, A THIRD IMPEDANCE MEMBER CONNECTED WITH THE SECOND CONVERTER MEANS FOR PROVIDING A THIRD CONTROL SIGNAL IN ACCORDANCE WITH THE CURRENT SUPPLIED TO SAID LOAD BY SAID SECOND CONVERTER MEANS, WITH EACH OF SAID FIRST, SECOND AND THIRD IMPEDANCE MEMBERS HAVING PREDETERMINED AND RELATED IMPEDANCE VALUES, AND LOAD ENERGIZATION CONTROL MEANS CONNECTED WITH SAID IMPEDENCE MEMBERS TO ENERGIZE THE CURRENT CONTROLLING MEMBER OF EACH CONVERTER MEANS FOR CONTROLLING THE RESPECTIVE VARIABLE CODUCTION PERIODS KIN RESPONSE TO A PREDETERMINED COMPARISON OF SAID FIRST CONTROL SIGNAL WITH SAID SECOND CONTROL SIGNAL AND SAID THIRD CONTROL SIGNAL.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |