US3136957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiphase electrical generators
Assignee: Westinghouse Electric Corp
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Filing: 1962-06-13
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Granted: 1964-06-09
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Expires: 1982-06-13
Abstract
No abstract record available.
Inventors
- 👤 Rudy P Putkovich
- 👤 Thomas M Corry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:30
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
397 words
IN A THREE PHASE ELECTRICAL GENERATOR, A SOURCE OF DIRECT VOLTAGE, THREE INVERTER CIRCUITS EACH INCLUDING A FIRST MAGNETIC CORE, FIRST INPUT AND OUTPUT WINDINGS LINKING THE FIRST CORE IN INDUCTIVE RELATION, A PAIR OF PARALLEL PATHS EACH INCLUDING A SECTION OF SAID FIRST INPUT WINDING CONNECTED FOR ENERGIZATION FROM SAID SOURCE, A PAIR OF TRANSISTOR SWITCHES EACH INCLUDING EMITTER, COLLECTOR AND BASE ELECTRODES WITH THE EMITTER AND COLLECTOR ELECTRODES OF EACH TRANSISTOR INCLUDED IN A SEPARATE ONE OF SAID PATHS, AND A PAIR OF BIASING WINDINGS LINKING SAID FIRST CORE IN INDUCTIVE RELATION WITH SAID FIRST INPUT WINDING EACH CONNECTED BETWEEN ONE OF THE EMITTER AND COLLECTOR ELECTRODES AND THE BASE ELECTRODE OF A SEPARATE ONE OF SAID TRANSISTORS; SAID BIASING WINDINGS BEING CONNECTED TO APPLY BIASING VOLTAGES INDUCED THEREIN IN RESPONSE TO A CONDUCTIVE CONDITION OF ONE OF SAID PATHS WHILE THE OTHER OF SAID PATHS IS IN A NON-CONDUCTIVE CONDITION TO THE ASSOCIATED TRANSISTORS FOR ESTABLISHING OPPOSING OPERATING CONDITIONS OF SAID TRANSISTORS, EACH OF SAID FIRST OUTPUT WINDINGS HAVING AN ALTERNATING OUTPUT VOLTAGE INDUCED THEREIN IN RESPONSE TO PERIODIC REVERSALS OF THE OPERATING CONDITIONS OF THE ASSOCIATED TRANSISTORS, SAID OUTPUT VOLTAGES HAVING PHASE RELATIONSHIPS DEPENDENT UPON THE OPERATING PHASE RELATIONSHIPS OF THE TRANSISTORS, AND CONTROL MEANS EFFECTIVE IN RESPONSE TO OPERATION OF ONE OF SAID INVERTER CIRCUITS TO CONTROL OPERATION OF THE REMAINING INVERTER CIRCUITS, SAID CONTROL MEANS INCLUDING A SEPARATE REACTOR ASSOCIATED WITH EACH OF THE REMAINING INVERTER CIRCUITS, EACH OF SAID REACTORS INCLUDING A SECOND MAGNETIC CORE WITH A SECOND INPUT WINDING LINKING THE SECOND CORE; SAID SECOND CORES BEING DESIGNED FOR MAGNETIC SATURATION WITHIN THE RANGE OF ENERGIZATION OF SAID SECOND INPUT WINDINGS, SAID SECOND INPUT WINDINGS BEING CONNECTED IN SERIES RELATION WITH THE ASSOCIATED BIASING WINDINGS FOR ENERGIZATION IN ACCORDANCE WITH OUTPUT VOLTAGES PRODUCED IN RESPONSE TO OPERATION OF SAID ONE OF SAID INVERTER CIRCUITS, AND SEPARATE RESISTANCE MEANS CONNECTED IN SERIES RELATION WITH EACH OF SAID SECOND INPUT WINDINGS, SAID RESISTANCE MEANS DEVELOPING VOLTAGE PULSES IN RESPONSE TO EACH SATURATION OF THE ASSOCIATED SECOND CORES EFFECTIVE TO OPERATE THE ASSOCIATED SWITCHES, SAID REACTORS BEING PROPORTIONED SUCH THAT PRESELECTED TIMES ARE REQUIRED FOR THE SECOND CORES TO TRANSFER BETWEEN OPPOSING DIRECTION OF SATURATION TO ESTABLISH DISPLACEMENTS BETWEEN THE OPERATING PHASES OF THE TRANSISTORS OF SAID INVERTER CIRCUITS, SAID DISPLACEMENTS EFFECTING THE ESTABLISHMENT OF CORRESPONDING PHASE DISPLACEMENTS BETWEEN SAID OUTPUT VOLTAGES.
Claim 2
Dependent Claim
397 words
IN A THREE PHASE ELECTRICAL GENERATOR, A SOURCE OF DIRECT VOLTAGE, THREE INVERTER CIRCUITS EACH INCLUDING A FIRST MAGNETIC CORE, FIRST INPUT AND OUTPUT WINDINGS LINKING THE FIRST CORE IN INDUCTIVE RELATION, A PAIR OF PARALLEL PATHS EACH INCLUDING A SECTION OF SAID FIRST INPUT WINDING CONNECTED FOR ENERGIZATION FROM SAID SOURCE, A PAIR OF TRANSISTOR SWITCHES EACH INCLUDING EMITTER, COLLECTOR AND BASE ELECTRODES WITH THE EMITTER AND COLLECTOR ELECTRODES OF EACH TRANSISTOR INCLUDED IN A SEPARATE ONE OF SAID PATHS, AND A PAIR OF BIASING WINDINGS LINKING SAID FIRST CORE IN INDUCTIVE RELATION WITH SAID FIRST INPUT WINDING EACH CONNECTED BETWEEN ONE OF THE EMITTER AND COLLECTOR ELECTRODES AND THE BASE ELECTRODE OF A SEPARATE ONE OF SAID TRANSISTORS; SAID BIASING WINDINGS BEING CONNECTED TO APPLY BIASING VOLTAGES INDUCED THEREIN IN RESPONSE TO A CONDUCTIVE CONDITION OF ONE OF SAID PATHS WHILE THE OTHER OF SAID PATHS IS IN A NON-CONDUCTIVE CONDITION TO THE ASSOCIATED TRANSISTORS FOR ESTABLISHING OPPOSING OPERATING CONDITIONS OF SAID TRANSISTORS, EACH OF SAID FIRST OUTPUT WINDINGS HAVING AN ALTERNATING OUTPUT VOLTAGE INDUCED THEREIN IN RESPONSE TO PERIODIC REVERSALS OF THE OPERATING CONDITIONS OF THE ASSOCIATED TRANSISTORS, SAID OUTPUT VOLTAGES HAVING PHASE RELATIONSHIPS DEPENDENT UPON THE OPERATING PHASE RELATIONSHIPS OF THE TRANSISTORS, AND CONTROL MEANS EFFECTIVE IN RESPONSE TO OPERATION OF ONE OF SAID INVERTER CIRCUITS TO CONTROL OPERATION OF THE REMAINING INVERTER CIRCUITS, SAID CONTROL MEANS INCLUDING A SEPARATE REACTOR ASSOCIATED WITH EACH OF THE REMAINING INVERTER CIRCUITS, EACH OF SAID REACTORS INCLUDING A SECOND MAGNETIC CORE WITH A SECOND INPUT WINDING LINKING THE SECOND CORE; SAID SECOND CORES BEING DESIGNED FOR MAGNETIC SATURATION WITHIN THE RANGE OF ENERGIZATION OF SAID SECOND INPUT WINDINGS, SAID SECOND INPUT WINDINGS BEING CONNECTED IN SERIES RELATION WITH THE ASSOCIATED BIASING WINDINGS FOR ENERGIZATION IN ACCORDANCE WITH OUTPUT VOLTAGES PRODUCED IN RESPONSE TO OPERATION OF SAID ONE OF SAID INVERTER CIRCUITS, AND SEPARATE RESISTANCE MEANS CONNECTED IN SERIES RELATION WITH EACH OF SAID SECOND INPUT WINDINGS, SAID RESISTANCE MEANS DEVELOPING VOLTAGE PULSES IN RESPONSE TO EACH SATURATION OF THE ASSOCIATED SECOND CORES EFFECTIVE TO OPERATE THE ASSOCIATED SWITCHES, SAID REACTORS BEING PROPORTIONED SUCH THAT PRESELECTED TIMES ARE REQUIRED FOR THE SECOND CORES TO TRANSFER BETWEEN OPPOSING DIRECTION OF SATURATION TO ESTABLISH DISPLACEMENTS BETWEEN THE OPERATING PHASES OF THE TRANSISTORS OF SAID INVERTER CIRCUITS, SAID DISPLACEMENTS EFFECTING THE ESTABLISHMENT OF CORRESPONDING PHASE DISPLACEMENTS BETWEEN SAID OUTPUT VOLTAGES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |