Patent US3249807A successfully refreshed from Google Patents.
US3249807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit using parallel control rectifiers
Assignee: General Electric Co
•
Filing: 1962-09-13
•
Granted: 1966-05-03
•
Expires: 1982-09-13
Abstract
No abstract record available.
Inventors
- 👤 Joe A Nuckolls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:52
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/36; H05B41/38; H05B41/39; H05B41/392; H05B41/3921; H05B41/3924; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/45; G05F1/455; H02; H02P; H02P25/00; H02P25/02; H02P25/10; Y; Y10; Y10S; Y10S315/00; Y10S315/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A CIRCUIT FOR CONTROLLING ENERGIZATION OF A LOAD FROM AN ALTERNATING CURRENT SUPPLY COMPRISING, IN COMBINATION, BIDIRECTIONAL CONDUCTING CONTROLLED RECTIFIER MEANS ELETRICALLY CONNECTED BETWEEN THE LOAD AND THE ALTERNATING CURRENT SUPPLY, SAID CONTROLLED RECTIFIER MEANS BEING NORMALLY NONCONDUCTIVE TO BLOCK CURRENT FLOW TO THE LOAD AND HAVING AN ELECTRODE CONTROL MEANS TO RENDER IT CONDUCTIVE IN EITHER DIRECTION DEPENDING ON THE POLARITY OF THE ALTERNATING CURRENT SUPPLY; AND MEANS FOR APPLYING A CONTROL SIGNAL TO SAID ELECTRODE CONTROL MEANS, SAID MEANS INCLUDING A RESISTANCE AND CAPACITANCE ELECTRICALLY CONNECTED TOGETHER IN SERIES AND DIRECTLY TO THE ALTERNATING CURRENT SUPPLY, AND A CONTROL DEVICE WHICH BECOMES CONDUCTIVE UPON THE APPLICATION OF A PREDETERMINED VOLTAGE ELECTRICALLY CONNECTED IN SERIES WITH SAID RESISTANCE AND IN PARALLEL WITH SAID CAPACITANCE SO THAT THE RESISTANCE-CAPACITANCE CIRCUIT DETERMINES A TIME IN EACH ALTERNATING CURRENT CYCLE AT WHICH THE CONTROL SIGNAL IS GENERATED.
Claim 2
Dependent Claim
145 words
A CIRCUIT FOR CONTROLLING ENERGIZATION OF A LOAD FROM AN ALTERNATING CURRENT SUPPLY COMPRISING, IN COMBINATION, BIDIRECTIONAL CONDUCTING CONTROLLED RECTIFIER MEANS ELETRICALLY CONNECTED BETWEEN THE LOAD AND THE ALTERNATING CURRENT SUPPLY, SAID CONTROLLED RECTIFIER MEANS BEING NORMALLY NONCONDUCTIVE TO BLOCK CURRENT FLOW TO THE LOAD AND HAVING AN ELECTRODE CONTROL MEANS TO RENDER IT CONDUCTIVE IN EITHER DIRECTION DEPENDING ON THE POLARITY OF THE ALTERNATING CURRENT SUPPLY; AND MEANS FOR APPLYING A CONTROL SIGNAL TO SAID ELECTRODE CONTROL MEANS, SAID MEANS INCLUDING A RESISTANCE AND CAPACITANCE ELECTRICALLY CONNECTED TOGETHER IN SERIES AND DIRECTLY TO THE ALTERNATING CURRENT SUPPLY, AND A CONTROL DEVICE WHICH BECOMES CONDUCTIVE UPON THE APPLICATION OF A PREDETERMINED VOLTAGE ELECTRICALLY CONNECTED IN SERIES WITH SAID RESISTANCE AND IN PARALLEL WITH SAID CAPACITANCE SO THAT THE RESISTANCE-CAPACITANCE CIRCUIT DETERMINES A TIME IN EACH ALTERNATING CURRENT CYCLE AT WHICH THE CONTROL SIGNAL IS GENERATED.
References Cited (Backward Citations)
US1976355A
Cited
US2262361A
Cited
US2619618A
Cited
US2773234A
Cited
US2973456A
Cited
US2954509A
Cited
US3005946A
Cited
US3159755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |