Patent US3205383A successfully refreshed from Google Patents.
US3205383A
Expired / Lapsed
US
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Synchronous hysteresis electric motor
Assignee: HURST Manufacturing CORP
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Filing: 1961-06-26
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Granted: 1965-09-07
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Expires: 1981-06-26
Abstract
No abstract record available.
Inventors
- 👤 Hurst Ira Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:22
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/02; H02K19/04; H02K19/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
270 words
AN ELECTRICAL MOTRO COMPRISING, IN COMBINATION, A FIRST MAGNETRIC YOKE HAVING A FLAT PORTION WITH AN OPENING THEREIN AND A PLURALITY OF APERTURES EXTENDFING THERETHROUGH DISPOSED ABOUT THE OPENING, A HOLLOW CYLINDRICAL CORE MOUNTED ON THE YOKE ABOUT THE OPENING AND EXTENDING NORMALLY FROM THE FLAT PORTION OF THE YOKE, SAID YOKE HAVING A PLURALITY OF POLE PIECES EXTENDING FROM THE PERIMETER OF THE FLAT PORTION OF THE POLE PIECE PARALLEL TO THE CORE, A CIRCULAR ROTOR HAVINGA PORTION OF MAGNETIC MATERIAL OF HIGH REMANENCE CONFRONTING THE POLE PIECES OF THE FIRST YOKE, A SHAFT JOURNALED WITHIN THE HOLLOW CORE AND MOUNTED ON THE ROTOR AT ITS CENTER, A COIL DISPOSED ABOUT THE MAGNETIC CORE ADAPTED TO BE ELECTRICALLY CONNECTED TO AN ALTERNATINGCURRENT SOURCE, A SECOND YOKE HAVING A FLAT CENTRAL PORTION PROVIDED WITH A PLURALITY OF APERTURE EXTENDING THERETHROUGH MOUNTED ON THE CORE ON THE OPPOSITE SIDE OF THE COIL FROM THE FIRST YOKE AND HAVING A PLURALITY OF POLE PIECES EQUAL IN NUMBER TO THE POLE PIECES OF THE FIRST YOKE, SAID COIL HAVING A PLRUALITY OF BOSSES EXTENDING FROM OPPOSITE SIDES THEREOF DISPOSED IN THE APERTURES OF THE FIRST AND SECOND YOKE, RESPECTIVELY, AND MAINTAINING TRHE FIRST AND SECOND YOKE, RESPECTIVELY, TION RELATIVE TO EACH OTHER, EACH OF SAID POLE PIECES OF THE SECOND YOKE CONFRONTING THE ROTOR BETWENE TWO ADJACENT POLE PIECES OF THE FIRST YOKE, EACH OF THE POLE PIECES OF THE FIRST YOKE BEING IN A MAGNETIC CIRCUIT WITH A POLE PIECE OF THE SECOND YOKE AND A PORTION OF THE ROTOR, A SECOND CORE, A SECOND COIL DISPOSED ABOUT THE SECOND CORE HAVING
References Cited (Backward Citations)
GB319684A
Cited
US2465042A
Cited
US2460358A
Cited
US2814746A
Cited
US2793307A
Cited
US2981855A
Cited
GB867659A
Cited
US3092743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |