Patent US3210635A successfully refreshed from Google Patents.
US3210635A
Expired / Lapsed
US
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Transformer-rectifier circuit
Assignee: Westinghouse Electric Corp
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Filing: 1961-04-17
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Granted: 1965-10-05
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Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 Jack W Ogden
- 👤 Deryl G Mcdaniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:00
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN AN IMPROVED TRANSFORMER-RECTIFIER CIRCUIT FOR CONVERTING ALTERNATING CURRENT TO DIRECT CURRENT, A FIRST AND A SECOND THREE PHASE TRANSFORMER, EACH OF SAID TRANSFORMERS HAVING AN EXTENDED DELTA CONNECTED PRIMARY AND A DOUBLE Y CONNECTED SECONDARY WITH A PAIR OF SECONDARY WINDINGS FOR EACH PRIMARY WINDING, SAID EXTENDED DELTA CONNECTED PRIMARIES BEING CONNECTED TO HAVE OPPOSITE PHASE ROTATION CAUSING A PHASE DIFFERENCE BETWEEN THEM OF 30*, EACH PAIR OF SECONDARY WINDINGS BEING CONNECTED IN OPPOSITE DIRECTIONS TO HAVE A PHASE DIFFERENCE OF 180* BETWEEN THEM, MEANS FOR APPLYING ALTERNATING CURRENT TO BE RECTIFIED TO THE PRIMARY WINDINGS OF SAID FIRST AND SECOND TRANSFORMERS IN PARALLEL CIRCUIT RELATIONSHIP, AND MEANS FOR RECTIFYING THE ALTERNATING CURRENT PRODUCED IN THE SECONDARY WINDINGS.
Claim 2
Dependent Claim
119 words
IN AN IMPROVED TRANSFORMER-RECTIFIER CIRCUIT FOR CONVERTING ALTERNATING CURRENT TO DIRECT CURRENT, A FIRST AND A SECOND THREE PHASE TRANSFORMER, EACH OF SAID TRANSFORMERS HAVING AN EXTENDED DELTA CONNECTED PRIMARY AND A DOUBLE Y CONNECTED SECONDARY WITH A PAIR OF SECONDARY WINDINGS FOR EACH PRIMARY WINDING, SAID EXTENDED DELTA CONNECTED PRIMARIES BEING CONNECTED TO HAVE OPPOSITE PHASE ROTATION CAUSING A PHASE DIFFERENCE BETWEEN THEM OF 30*, EACH PAIR OF SECONDARY WINDINGS BEING CONNECTED IN OPPOSITE DIRECTIONS TO HAVE A PHASE DIFFERENCE OF 180* BETWEEN THEM, MEANS FOR APPLYING ALTERNATING CURRENT TO BE RECTIFIED TO THE PRIMARY WINDINGS OF SAID FIRST AND SECOND TRANSFORMERS IN PARALLEL CIRCUIT RELATIONSHIP, AND MEANS FOR RECTIFYING THE ALTERNATING CURRENT PRODUCED IN THE SECONDARY WINDINGS.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |