Patent US3224818A successfully refreshed from Google Patents.
US3224818A
Expired / Lapsed
US
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Combined electromagnetic and electromechanical power converter
Assignee: Individual
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Filing: 1962-12-10
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Granted: 1965-12-21
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Sixsmith Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:42
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/04; F16C32/0406; F16C32/044; F16C32/0474; F16C32/0493; H; H02; H02K; H02K7/00; H02K7/08; H02K7/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN AN ELECTRO-MECHANICAL CONVERTER; A ROTOR POSITIONED IN A STATOR, A PLURALITY OF SENSING MEANS FOR SENSING THE RADIAL POSITION OF SAID ROTOR RELATIVE TO SAID STATOR, A PLURALITY OF CONTROL WINDINGS AND A PLURALITY OF STATORMOTOR WINDINGS POSITIONED ON SAID STATOR IN SUCH A MANNER THAT THE MUTUAL INDUCTANCE BETWEEN EACH CONTROL WINDING AND EACH STATOR-MOTOR WINDING IS SUBSTANTIALLY ZERO, A PLURALITY OF CONTROL MEANS, EACH CONNECTED TO THE OUTPUT OF A RESPECTIVE ONE OF THE SENSING MEANS AND EACH PROVIDING A SIGNAL HAVING A MAGNITUDE DEPENDENT UPON THE RADIAL POSITION OF THE STATOR RELATIVE TO SAID ROTOR, MEANS FOR APPLYING THE OUTPUT OF EACH CONTROL MEANS TO A RESPECTIVE ONE OF SAID CONTROL WINDINGS, A POWER SUPPLY GENERATING A PLURALITY OF VOLTAGES IN A SELECTED PHASE RELATIONSHIP, AND MEANS FOR APPLYING EACH VOLTAGE TO A RESPECTIVE ONE OF SAID STATOR-MOTOR WINDINGS.
Claim 2
Dependent Claim
143 words
IN AN ELECTRO-MECHANICAL CONVERTER; A ROTOR POSITIONED IN A STATOR, A PLURALITY OF SENSING MEANS FOR SENSING THE RADIAL POSITION OF SAID ROTOR RELATIVE TO SAID STATOR, A PLURALITY OF CONTROL WINDINGS AND A PLURALITY OF STATORMOTOR WINDINGS POSITIONED ON SAID STATOR IN SUCH A MANNER THAT THE MUTUAL INDUCTANCE BETWEEN EACH CONTROL WINDING AND EACH STATOR-MOTOR WINDING IS SUBSTANTIALLY ZERO, A PLURALITY OF CONTROL MEANS, EACH CONNECTED TO THE OUTPUT OF A RESPECTIVE ONE OF THE SENSING MEANS AND EACH PROVIDING A SIGNAL HAVING A MAGNITUDE DEPENDENT UPON THE RADIAL POSITION OF THE STATOR RELATIVE TO SAID ROTOR, MEANS FOR APPLYING THE OUTPUT OF EACH CONTROL MEANS TO A RESPECTIVE ONE OF SAID CONTROL WINDINGS, A POWER SUPPLY GENERATING A PLURALITY OF VOLTAGES IN A SELECTED PHASE RELATIONSHIP, AND MEANS FOR APPLYING EACH VOLTAGE TO A RESPECTIVE ONE OF SAID STATOR-MOTOR 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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |