US3124739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
L wellford
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:43
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/516; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/45; H02M7/525
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
IN A SYSTEM WHEREIN POWER FROM A D.C. SOURCE IS CONVERTED TO AN A.C. POWER OUTPUT IN POWER SWITCHING MEANS ADAPTED TO BE COUPLED TO THE D.C. SOURCE ACCORDING TO A VOLTAGE FROM A SQUARE WAVE SOURCE, MEANS FOR REGULATING THE VOLTAGE OF SAID OUTPUT COMPRISING MEANS IN CIRCUIT WITH SAID POWER SWITCHING MEANS FOR DRIVING A REFERENCE UNIDIRECTIONAL VOLTAGE OF A CHOSEN VALUE, MEANS IN CIRCUIT WITH SAID POWER SWITCHING MEANS AND SAID REFERENCE VOLTAGE DERIVING MEANS FOR COMPARING SAID OUTPUT WITH SAID REFERENCE VOLTAGE TO DERIVE A DIFFERENCE VOLTAGE THEREBETWEEN, A PAIR OF GATE CONTROLLED RECTIFIERS IN CIRCUIT WITH SAID SQUARE WAVE SOURCE, A TRANSFORMER, MEANS FOR APPLYING SAID OUTPUT TO SAID GATE CONTROLLED RECTIFIERS THROUGH SAID TRANSFORMER TO ALTER THE OPERATING IMPEDANCE LEVEL OF SAID GATE CONTROLLED RECTIFIERS, MEANS IN CIRCUIT WITH SAID COMPARING MEANS AND SAID GATE CONTROLLED RECTIFIERS FOR APPLYING SAID DIFFERENCE VOLTAGE TO SAID SILICON CONTROLLED RECTIFIERS, SAID RECTIFIERS BEING RESPECTIVELY SWITCHED INTO CONDUCTIVITY UPON THE COINCIDENCE OF A POSITIVE HALF CYCLE FROM SAID SQUARE WAVE SOURCE AND A DIFFERENCE VOLTAGE WHEREBY THE PULSE WIDTH OF THE OUTPUT OF SAID POWER SWITCHING MEANS IS MODULATED.
Claim 2
Dependent Claim
191 words
IN A SYSTEM WHEREIN POWER FROM A D.C. SOURCE IS CONVERTED TO AN A.C. POWER OUTPUT IN POWER SWITCHING MEANS ADAPTED TO BE COUPLED TO THE D.C. SOURCE ACCORDING TO A VOLTAGE FROM A SQUARE WAVE SOURCE, MEANS FOR REGULATING THE VOLTAGE OF SAID OUTPUT COMPRISING MEANS IN CIRCUIT WITH SAID POWER SWITCHING MEANS FOR DRIVING A REFERENCE UNIDIRECTIONAL VOLTAGE OF A CHOSEN VALUE, MEANS IN CIRCUIT WITH SAID POWER SWITCHING MEANS AND SAID REFERENCE VOLTAGE DERIVING MEANS FOR COMPARING SAID OUTPUT WITH SAID REFERENCE VOLTAGE TO DERIVE A DIFFERENCE VOLTAGE THEREBETWEEN, A PAIR OF GATE CONTROLLED RECTIFIERS IN CIRCUIT WITH SAID SQUARE WAVE SOURCE, A TRANSFORMER, MEANS FOR APPLYING SAID OUTPUT TO SAID GATE CONTROLLED RECTIFIERS THROUGH SAID TRANSFORMER TO ALTER THE OPERATING IMPEDANCE LEVEL OF SAID GATE CONTROLLED RECTIFIERS, MEANS IN CIRCUIT WITH SAID COMPARING MEANS AND SAID GATE CONTROLLED RECTIFIERS FOR APPLYING SAID DIFFERENCE VOLTAGE TO SAID SILICON CONTROLLED RECTIFIERS, SAID RECTIFIERS BEING RESPECTIVELY SWITCHED INTO CONDUCTIVITY UPON THE COINCIDENCE OF A POSITIVE HALF CYCLE FROM SAID SQUARE WAVE SOURCE AND A DIFFERENCE VOLTAGE WHEREBY THE PULSE WIDTH OF THE OUTPUT OF SAID POWER SWITCHING MEANS IS MODULATED.
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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |