US3214599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulator for d.c. generator
Assignee: General Electric Co
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Filing: 1961-06-13
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Granted: 1965-10-26
•
Expires: 1981-06-13
Abstract
No abstract record available.
Inventors
- 👤 Armistead L Wellford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:00
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN COMBINATION WITH A DIRECT CURRENT GENERATOR INCLUDING A SHUNT FIELD, A REFERENCE VOLTAGE SOURCE, MEANS IN CIRCUIT WITH SAID SOURCE AND SAID GENERATOR FOR COMPARING THE VOLTAGES THEREFROM TO DERIVE A DIFFERENCE VOLTAGE THEREBETWEEN, VARIABLE FREQUENCY OSCILLATING MEANS, MEANS FOR APPLYING SAID DIFFERENCE VOLTAGE TO SAID OSCILLATING MEANS AT A LEVEL WHICH IS A FUNCTION OF THE MAGNITUDE OF SAID DIFFERENCE VOLTAGE TO PRODUCE A PULSE TRAIN COMPRISING PULSES HAVING A CHOSEN WIDTH, THE PERIODS BETWEEN SAID PULSES BEING A FUNCTION OF SAID MAGNITUDE, AND MEANS IN CIRCUIT WITH SAID OSCILLATING MEANS AND SAID SHUNT FIELD WHICH IS PERIODICALLY RENDERED CONDUCTIVE BY THE APPLICATIONU OF SAID PULSES THERETO, THE CURRENT FROM LAST-NAMED MEANS BEING SUPPLIED TO SAID SHUNT FIELD.
Claim 2
Dependent Claim
120 words
IN COMBINATION WITH A DIRECT CURRENT GENERATOR INCLUDING A SHUNT FIELD, A REFERENCE VOLTAGE SOURCE, MEANS IN CIRCUIT WITH SAID SOURCE AND SAID GENERATOR FOR COMPARING THE VOLTAGES THEREFROM TO DERIVE A DIFFERENCE VOLTAGE THEREBETWEEN, VARIABLE FREQUENCY OSCILLATING MEANS, MEANS FOR APPLYING SAID DIFFERENCE VOLTAGE TO SAID OSCILLATING MEANS AT A LEVEL WHICH IS A FUNCTION OF THE MAGNITUDE OF SAID DIFFERENCE VOLTAGE TO PRODUCE A PULSE TRAIN COMPRISING PULSES HAVING A CHOSEN WIDTH, THE PERIODS BETWEEN SAID PULSES BEING A FUNCTION OF SAID MAGNITUDE, AND MEANS IN CIRCUIT WITH SAID OSCILLATING MEANS AND SAID SHUNT FIELD WHICH IS PERIODICALLY RENDERED CONDUCTIVE BY THE APPLICATIONU OF SAID PULSES THERETO, THE CURRENT FROM LAST-NAMED MEANS BEING SUPPLIED TO SAID SHUNT FIELD.
References Cited (Backward Citations)
US2740086A
Cited
US2886763A
Cited
US2866944A
Cited
US2896149A
Cited
US2980844A
Cited
US3076922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |