US3211985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling a converter
Assignee: ABB Norden Holding AB
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Filing: 1961-12-21
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Granted: 1965-10-12
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Expires: 1981-12-21
Abstract
No abstract record available.
Inventors
- 👤 Torok Vilmos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:20
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; H; H02; H02M; H02M1/00; H02M1/08; H02M1/081; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/15; H02M7/151; H02M7/155; H02M7/1552; H02M7/1555; H02M7/1557; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/525; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/293; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
AN ELECTRICAL CONVERTER COMPRISING AN ALTERNATING CURRENT SUPPLY MEANS, CONTROLLABLE CURRENT ELEMENTS CONNECTED TO SAID SUPPLY MEANS AND A CONTROL PULSE GENERATOR MEANS CONNECTED TO THE CONTROL ELECTRODES OF SAID CONTROLLABLE CURRENT ELEMENTS, AT LEAST ONE OF SAID MEANS COMPRISING A FREE-RUNNING OSCILLATOR, SAID OSCILLATOR HAVING A FREQUENCY CONTROL CIRCUIT, A CONTROL SIGNAL GENERATING MEANS HAVING ITS OUTPUT TERMINALS CONNECTED TO THE INPUT TERMINALS OF SAID FREQUENCY CONTROL CIRCUIT AND OPERATIVELY CONNECTED TO THE CONVERTER TO SENSE THE OUTPUT MAGNITUDE OF THE CONVERTER AND GENERATE A SIGNAL DEPENDENT UPON
Claim 2
Dependent Claim
89 words
AN ELECTRICAL CONVERTER COMPRISING AN ALTERNATING CURRENT SUPPLY MEANS, CONTROLLABLE CURRENT ELEMENTS CONNECTED TO SAID SUPPLY MEANS AND A CONTROL PULSE GENERATOR MEANS CONNECTED TO THE CONTROL ELECTRODES OF SAID CONTROLLABLE CURRENT ELEMENTS, AT LEAST ONE OF SAID MEANS COMPRISING A FREE-RUNNING OSCILLATOR, SAID OSCILLATOR HAVING A FREQUENCY CONTROL CIRCUIT, A CONTROL SIGNAL GENERATING MEANS HAVING ITS OUTPUT TERMINALS CONNECTED TO THE INPUT TERMINALS OF SAID FREQUENCY CONTROL CIRCUIT AND OPERATIVELY CONNECTED TO THE CONVERTER TO SENSE THE OUTPUT MAGNITUDE OF THE CONVERTER AND GENERATE A SIGNAL DEPENDENT UPON
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 |