US3334252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asynchronous electric motors
Assignee: JULIEN AND MEGE
•
Filing: 1964-12-14
•
Granted: 1967-08-01
•
Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Gayral Marcel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:43
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/48; H02K3/487; H02K3/493
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN AN ASYNCHRONOUS ELECTRIC MOTOR, AN ANNULAR STATOR, INWARDLY-DIRECTED POLES DEFINED BY RADIAL SLOTS IN THE INNER PERIPHERY OF SAID STATOR, PREFORMED COILS MOUNTED UPON SAID POLES, AND SINTERED MAGNETIC MATERIAL HAVING A LARGE PROPORTION OF FREE INTERNAL SURFACES AND A HIGH RELUCTANCE AND HIGH ELECTRICAL RESISTANCE AND HIGH RESISTANCE TO THE FLOW OF EDDY CURRENTS, SAID MATERIAL BEING DISPOSED IN THE BORE OF SAID STATOR TO BRIDGE THE OPENINGS OF SAID SLOTS.
Claim 2
Dependent Claim
73 words
IN AN ASYNCHRONOUS ELECTRIC MOTOR, AN ANNULAR STATOR, INWARDLY-DIRECTED POLES DEFINED BY RADIAL SLOTS IN THE INNER PERIPHERY OF SAID STATOR, PREFORMED COILS MOUNTED UPON SAID POLES, AND SINTERED MAGNETIC MATERIAL HAVING A LARGE PROPORTION OF FREE INTERNAL SURFACES AND A HIGH RELUCTANCE AND HIGH ELECTRICAL RESISTANCE AND HIGH RESISTANCE TO THE FLOW OF EDDY CURRENTS, SAID MATERIAL BEING DISPOSED IN THE BORE OF SAID STATOR TO BRIDGE THE OPENINGS OF SAID SLOTS.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |