Patent US3243620A successfully refreshed from Google Patents.
US3243620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous induction motors having an improved rotor construction
Assignee: General Electric Co
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Filing: 1963-05-01
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Granted: 1966-03-29
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Expires: 1983-05-01
Abstract
No abstract record available.
Inventors
- 👤 Fred W Suhr
- 👤 Joe T Donahoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:40
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/02; H02K19/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A STATOR-EXCITED SYNCHRONOUS INDUCTION MOTOR COMPRISING: A STATOR WITH A DISTRIBUTED WINDING FOR PROVIDING ROTATING FIELD POLES, A ROTOR ASSEMBLY ROTATABLY SUPPORTED FOR ROTATION RELATIVE TO SAID STATOR AND POSITIONED WITHIN SAID STATOR, SAID ROTOR ASSEMBLY COMPRISING A SHAFT AND A MAGNETIC CORE CARRIED BY SAID SHAFT, SAID MAGNETIC CORE HAVING A PLURALITY OF SQUIRREL CAGE SLOTS UNIFORMLY SPACED NEAR THE OUTER PERIPHERY OF THE MAGNETIC CORE AND PROVIDING AT LEAST TWO MAGNETIC POLES, EACH OF SAID POLES HAVING A DIRECT POLE AXIS, SAID MAGNETIC CORE BEING FORMED
References Cited (Backward Citations)
US2483848A
Cited
US2913607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |