US3304451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous motor including a permanent magnet stator
Assignee: IG TECHNOLOGIES Inc A CORP OF
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Filing: 1963-05-29
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Granted: 1967-02-14
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Expires: 1983-05-29
Abstract
No abstract record available.
Inventors
- 👤 Richard A Scholten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:34
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/38; H02K21/44; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
AN ELECTRIC MOTOR COMPRISING MAGNETIC CORE MEANS DEFINING A MAGNETIC CIRCUIT, SAID CIRCUIT HAVING A STATIONARY RING-SHAPED PERMANENT MAGNET AND ANNULAR AIR GAPS RADIALLY INWARDLY AND RADIALLY OUTWARDLY OF SAID STATIONARY PERMANENT MAGNET, ROTOR MEANS HAVING ANNULAR SERIES OF POLE PORTIONS IN EACH OF SAID AIR GAPS, AND STATIONARY WINDING MEANS COUPLED TO SAID MAGNETIC CIRCUIT FOR EN-
References Cited (Backward Citations)
US2492613A
Cited
US2483539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |