US3109977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon controlled rectifier d. c. to a. c. inverter utilizing bridge type arrangement with single commutating capacitor
Assignee: Individual
•
Filing: 1960-05-26
•
Granted: 1963-11-05
•
Expires: 1980-05-26
Abstract
No abstract record available.
Inventors
- 👤 John T Redfern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A.D.C. TO A.C. INVERTER CONSISTING OF A PLURALITY OF CONTROLLABLE SOLID STATE RECTIFIERS EACH HAVING AN ANODE, A CATHODE, AND A CONTROL ELEMENT, CONNECTED IN A BRIDGE LOOP HAVING FOUR LEGS, SAID LOOP HAVING A PAIR OF D.C. INPUT TERMINALS ACROSS ONE DIAGONAL JUNCTION THEREOF AND A PAIR OF OUTPUT TERMINALS ACROSS THE OTHER DIAGONAL JUNCTION THEREOF, THE ANODES OF SAID RECTIFIERS IN TWO ADJACENT LEGS CONNECTED TOGETHEER AT ONE D.C. INPUT TERMINAL AND THE CATHODES OF SAID RECTIFIERS IN THE OTHER LEGS CONNECTED TOGETHER AT THE OTHER D.C. INPUT TERMINAL, CONTROL SIGNAL COUPLING MEANS CONNECTED TO SAID RESPECTIVE CONTROL ELEMENTS FOR APPLYING A CONTROL SIGNAL TO SAID CONTROL ELEMENTS, SAID CONTROL SIGNAL BEING COUPLED IN PHSE TO RECTIFIERS IN DIGONALLY OPPOSITE LEGS AND OUT OF PHASE
Claim 2
Dependent Claim
127 words
A.D.C. TO A.C. INVERTER CONSISTING OF A PLURALITY OF CONTROLLABLE SOLID STATE RECTIFIERS EACH HAVING AN ANODE, A CATHODE, AND A CONTROL ELEMENT, CONNECTED IN A BRIDGE LOOP HAVING FOUR LEGS, SAID LOOP HAVING A PAIR OF D.C. INPUT TERMINALS ACROSS ONE DIAGONAL JUNCTION THEREOF AND A PAIR OF OUTPUT TERMINALS ACROSS THE OTHER DIAGONAL JUNCTION THEREOF, THE ANODES OF SAID RECTIFIERS IN TWO ADJACENT LEGS CONNECTED TOGETHEER AT ONE D.C. INPUT TERMINAL AND THE CATHODES OF SAID RECTIFIERS IN THE OTHER LEGS CONNECTED TOGETHER AT THE OTHER D.C. INPUT TERMINAL, CONTROL SIGNAL COUPLING MEANS CONNECTED TO SAID RESPECTIVE CONTROL ELEMENTS FOR APPLYING A CONTROL SIGNAL TO SAID CONTROL ELEMENTS, SAID CONTROL SIGNAL BEING COUPLED IN PHSE TO RECTIFIERS IN DIGONALLY OPPOSITE LEGS AND OUT OF PHASE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |