US3225284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generator voltage regulating apparatus
Assignee: Hitachi Ltd
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Filing: 1962-11-05
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Granted: 1965-12-21
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Kawai Yoshinori
- 👤 Shibata Takanori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:44
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/28; H02J7/24; H02J7/2434; H02J7/2437; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A GENERATOR VOLTAGE REGULATING APPARATUS WHICH COMPRISES, IN ELECTRICAL CONNECTION WITH A GENERATOR HAVING A FIELD WINDING, A FIELD REGULATING MEANS INCLUDING A SEMICONDUCTOR SWITCHING ELEMENT CONNECTED IN SERIES TO THE SAID FIELD WINDING, A COMPARISON DETECTING MEANS WHICH, WHEN A DEVIATION FROM A PREDETERMINED VOLTAGE VALUE OCCURS IN THE TERMINAL VOLTAGE OF THE SAID GENERATOR, GENERATES, IN ACCORDANCE WITH THE MAGNITUDE OF THE SAID DEVIATION, TWO COMPARISON DETECTION SIGNALS HAVING MUTUALLY-OPPOSITE INCREASING AND DECREASING CHARACTERISTICS, A CIRCUIT FOR GENERATING PERIODIC, PULSE-FORM VULTAGE, A CIRCUIT WHEREIN THE SAID PULSE-FORM VOLTAGE IS APPLIED THROUGH A CONTROLLABLE IMPEDANCE MEANS TO CHARGE A CAPACITOR, AND A CONTROLLABLE DETERMINATION ELEMENT FOR DETECTING THE TERMINAL VOLTAGE OF THE SAID CAPACITOR AND GENERATING RECTANGULAR OUTPUT PULSE, AND WHICH IS SO ADAPTED THAT ONE OF THE SAID TWO COMPARISON DETECTION SIGNALS IS APPLIED TO THE SAID CONTROLLABLE IMPEDANCE MEANS, AND THE OTHER IS APPLIED TO THE SAID CONTROLLABLE DETERMINATION ELEMENT
Claim 2
Dependent Claim
153 words
A GENERATOR VOLTAGE REGULATING APPARATUS WHICH COMPRISES, IN ELECTRICAL CONNECTION WITH A GENERATOR HAVING A FIELD WINDING, A FIELD REGULATING MEANS INCLUDING A SEMICONDUCTOR SWITCHING ELEMENT CONNECTED IN SERIES TO THE SAID FIELD WINDING, A COMPARISON DETECTING MEANS WHICH, WHEN A DEVIATION FROM A PREDETERMINED VOLTAGE VALUE OCCURS IN THE TERMINAL VOLTAGE OF THE SAID GENERATOR, GENERATES, IN ACCORDANCE WITH THE MAGNITUDE OF THE SAID DEVIATION, TWO COMPARISON DETECTION SIGNALS HAVING MUTUALLY-OPPOSITE INCREASING AND DECREASING CHARACTERISTICS, A CIRCUIT FOR GENERATING PERIODIC, PULSE-FORM VULTAGE, A CIRCUIT WHEREIN THE SAID PULSE-FORM VOLTAGE IS APPLIED THROUGH A CONTROLLABLE IMPEDANCE MEANS TO CHARGE A CAPACITOR, AND A CONTROLLABLE DETERMINATION ELEMENT FOR DETECTING THE TERMINAL VOLTAGE OF THE SAID CAPACITOR AND GENERATING RECTANGULAR OUTPUT PULSE, AND WHICH IS SO ADAPTED THAT ONE OF THE SAID TWO COMPARISON DETECTION SIGNALS IS APPLIED TO THE SAID CONTROLLABLE IMPEDANCE MEANS, AND THE OTHER IS APPLIED TO THE SAID CONTROLLABLE DETERMINATION ELEMENT
References Cited (Backward Citations)
US2896148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |