Patent US3304484A successfully refreshed from Google Patents.
US3304484A
Expired / Lapsed
US
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Valve extinguishing network for inverters
Assignee: Westinghouse Electric Corp
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Filing: 1965-12-13
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Granted: 1967-02-14
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Expires: 1985-12-13
Abstract
No abstract record available.
Inventors
- 👤 Kernick Andress
- 👤 Theodore M Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:04
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/497; H02M1/00; H02M1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN AN APPARATUS OF THE CHARACTER DESCRIBED; A PLURALITY OF INTEGRAL INVERTERS; EACH SAID INVERTER INCLUDING A PAIR OF INPUT TERMINALS, A PAIR OF OUTPUT TERMINALS, A PAIR OF CURRENT CONTROLLING DEVICES EACH HAVING A PAIR OF TERMINALS AND BEING OPERABLE UPON BEING RENDERED CONDUCTIVE TO PASS CURRENT BETWEEN ITS SAID TERMINALS, AND AT LEAST ONE CURRENT PATH INTERCONNECTING SAID PAIRS OF TERMINALS AND INCLUDING SAID TERMINALS OF A FIRST OF SAID CONTROLLING DEVICES; A SEQUENCING NETWORK OPERATIVELY CONNECTED TO EACH OF FIRST DEVICES FOR RENDERING SAID FIRST DEVICES CONDUCTIVE IN SEQUENCE; A FIRST BUS; A CURRENT INTERRUPTING SWITCH; MEANS CONNECTING A CORRESPONDING ONE OF SAID TERMINALS OF EACH OF SAID FIRST DEVICES TO SAID FIRST BUS; A SECOND BUS; MEANS CONNECTING SAID INTERRUPTING SWITCH BETWEEN SAID BUSSES; MEANS CONNECTING A CORRESPONDING
Claim 2
Dependent Claim
132 words
IN AN APPARATUS OF THE CHARACTER DESCRIBED; A PLURALITY OF INTEGRAL INVERTERS; EACH SAID INVERTER INCLUDING A PAIR OF INPUT TERMINALS, A PAIR OF OUTPUT TERMINALS, A PAIR OF CURRENT CONTROLLING DEVICES EACH HAVING A PAIR OF TERMINALS AND BEING OPERABLE UPON BEING RENDERED CONDUCTIVE TO PASS CURRENT BETWEEN ITS SAID TERMINALS, AND AT LEAST ONE CURRENT PATH INTERCONNECTING SAID PAIRS OF TERMINALS AND INCLUDING SAID TERMINALS OF A FIRST OF SAID CONTROLLING DEVICES; A SEQUENCING NETWORK OPERATIVELY CONNECTED TO EACH OF FIRST DEVICES FOR RENDERING SAID FIRST DEVICES CONDUCTIVE IN SEQUENCE; A FIRST BUS; A CURRENT INTERRUPTING SWITCH; MEANS CONNECTING A CORRESPONDING ONE OF SAID TERMINALS OF EACH OF SAID FIRST DEVICES TO SAID FIRST BUS; A SECOND BUS; MEANS CONNECTING SAID INTERRUPTING SWITCH BETWEEN SAID BUSSES; MEANS CONNECTING A CORRESPONDING
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |