Patent US4149148A successfully refreshed from Google Patents.
Patent US3077548A successfully refreshed from Google Patents.
US3077548A
Expired / Lapsed
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Magnetic circuit structure for rotary electric machines
Assignee: Normacem SA
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Filing: 1960-03-21
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Granted: 1963-02-12
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Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 Moressee Georges
- 👤 Dechet Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/40; H02K23/44; H02K23/02; H02K23/04; H02K23/54; H02K3/00; H02K3/04; H02K3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN A ROTARY ELECTRICAL MACHINE, THE COMBINATION COMPRISING A FIRST ANNULAR MAGNET MEMBER, A SECOND ANNULAR MAGNET MEMBER SURROUNDING SAID FIRST ANNULAR MAGNET MEMBER AND ARRANGED CONCENTRICALLY THEREWITH TO ESTABLISH A COMMON ROTATIONAL AXIS FOR THE SAID MACHINE, EACH SAID ANNULAR MAGNET MEMBER HAVING FORMED THEREIN A CIRCUMFERENTIALLY EXTENDING PLURALITY OF PERMANENTLY MAGNETIZED POLAR REGIONS ALTERNATING IN POLARITY IN A CIRCUMFERENTIAL DIRECTION, A DISK TYPE ARMATURE HAVING INTERCONNECTED WINDING ELEMENTS ON OPPOSITE FACES THEREOF, SAID ARMATURE DISK BEING MOUNTED CONCENTRIC WITH SAID FIRST AND SECOND ANNULAR MAGNET MEMBERS AND LOCATED
Claim 2
Dependent Claim
90 words
IN A ROTARY ELECTRICAL MACHINE, THE COMBINATION COMPRISING A FIRST ANNULAR MAGNET MEMBER, A SECOND ANNULAR MAGNET MEMBER SURROUNDING SAID FIRST ANNULAR MAGNET MEMBER AND ARRANGED CONCENTRICALLY THEREWITH TO ESTABLISH A COMMON ROTATIONAL AXIS FOR THE SAID MACHINE, EACH SAID ANNULAR MAGNET MEMBER HAVING FORMED THEREIN A CIRCUMFERENTIALLY EXTENDING PLURALITY OF PERMANENTLY MAGNETIZED POLAR REGIONS ALTERNATING IN POLARITY IN A CIRCUMFERENTIAL DIRECTION, A DISK TYPE ARMATURE HAVING INTERCONNECTED WINDING ELEMENTS ON OPPOSITE FACES THEREOF, SAID ARMATURE DISK BEING MOUNTED CONCENTRIC WITH SAID FIRST AND SECOND ANNULAR MAGNET MEMBERS AND LOCATED
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |