US3211987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excitation system for a dynamoelectric machine
Assignee: Westinghouse Electric Corp
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Filing: 1962-09-18
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Granted: 1965-10-12
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Expires: 1982-09-18
Abstract
No abstract record available.
Inventors
- 👤 James A Gatlin
- 👤 Alan B Shimp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:51
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/26; H02P9/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN AN EXCITATION SYSTEM FOR A DYNAMOELECTRIC MACHINE HAVING AN EXCITATION FIELD WINDING AND DISPOSED TO SUPPLY AN OUTPUT VOLTAGE TO A LOQD THROUGH OUTPUT TERMINALS, FIRST MEANS RESPONSIVE TO SAID OUTPUT VOLTAGE OF SAID DYNAMOELECTRIC MACHINE ONTAINING A FIRST CURRENT RESPONSIVE TO THE OUTPUT VOLTAGE OF SAID DYNAMOELECTRIC MACHINE AND LAGGING THE LINE OF NEUTRAL VOLTAGE OF SAID DYNAMOLECTRIC MACHINE, SECOND MEANS HAVING LINEAR CHARACERTSITICS RESPONSIVE TO THE OUTPUT LOAD CURRENT OF SAID DYNAMOLECTRIC MACHINE FOR OBTAINING A SECOND CURRENT, SAID FIRST AND SECOND CURRENTS BEING COMBINED VECTORIALLY AND
Claim 2
Dependent Claim
90 words
IN AN EXCITATION SYSTEM FOR A DYNAMOELECTRIC MACHINE HAVING AN EXCITATION FIELD WINDING AND DISPOSED TO SUPPLY AN OUTPUT VOLTAGE TO A LOQD THROUGH OUTPUT TERMINALS, FIRST MEANS RESPONSIVE TO SAID OUTPUT VOLTAGE OF SAID DYNAMOELECTRIC MACHINE ONTAINING A FIRST CURRENT RESPONSIVE TO THE OUTPUT VOLTAGE OF SAID DYNAMOELECTRIC MACHINE AND LAGGING THE LINE OF NEUTRAL VOLTAGE OF SAID DYNAMOLECTRIC MACHINE, SECOND MEANS HAVING LINEAR CHARACERTSITICS RESPONSIVE TO THE OUTPUT LOAD CURRENT OF SAID DYNAMOLECTRIC MACHINE FOR OBTAINING A SECOND CURRENT, SAID FIRST AND SECOND CURRENTS BEING COMBINED VECTORIALLY AND
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |