Patent US3401281A successfully refreshed from Google Patents.
US3401281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor with permanent magnet stator poles and method of making
Assignee: General Electric Co
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Filing: 1966-03-18
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Granted: 1968-09-10
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Expires: 1986-03-18
Abstract
No abstract record available.
Inventors
- 👤 Elmer E Martin
- 👤 Robert F Brandon
- 👤 Ernest R Summers
- 👤 Wladyslaw S Zagorski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:08
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/17; H02K15/00; H02K15/02; H02K15/03; H02K15/16; H02K7/00; H02K7/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN ELECTRIC MOTOR COMPRISING A PAIR OF BRACKET SECTIONS OF MAGNETIC MATERIAL; SAID BRACKET SECTIONS BEING INWARDLY CONCAVE AND DEFINING A CHAMBER THEREBETWEEN; MEANS SECURING SAID BRACKET SECTIONS TOGETHER IN CONFRONTING RELATIONSHIP, WITH PORTIONS OF EACH BRACKET SECTION OVERLAPPING PORTIONS OF THE OTHER OF EACH BRACKET PERMANENT MAGNET MEANS DISPOSED IN SAID CHAMBER WITH AT LEAST ONE POLE PORTION IN EACH SAID BRACKET SECTION, SAID POLE PORTIONS DEFINING AN ARMATURE-RECEIVING BORE; SAID SECURING MEANS ALSO SECURING SAID PERMANENT MAGNET MEANS IN SAID BRACKET SECTIONS IN SUBSTANTIAL SURFACE-TOSURFACE CONTACT THEREWITH; AND SAID OVERLAPPED PORTIONS OF SAID BRACKET SECTIONS DEFINING AT LEAST A PORTION OF THE MAGNET FLUX PATH BETWEEN SAID POLE PORTIONS.
Claim 2
Dependent Claim
111 words
AN ELECTRIC MOTOR COMPRISING A PAIR OF BRACKET SECTIONS OF MAGNETIC MATERIAL; SAID BRACKET SECTIONS BEING INWARDLY CONCAVE AND DEFINING A CHAMBER THEREBETWEEN; MEANS SECURING SAID BRACKET SECTIONS TOGETHER IN CONFRONTING RELATIONSHIP, WITH PORTIONS OF EACH BRACKET SECTION OVERLAPPING PORTIONS OF THE OTHER OF EACH BRACKET PERMANENT MAGNET MEANS DISPOSED IN SAID CHAMBER WITH AT LEAST ONE POLE PORTION IN EACH SAID BRACKET SECTION, SAID POLE PORTIONS DEFINING AN ARMATURE-RECEIVING BORE; SAID SECURING MEANS ALSO SECURING SAID PERMANENT MAGNET MEANS IN SAID BRACKET SECTIONS IN SUBSTANTIAL SURFACE-TOSURFACE CONTACT THEREWITH; AND SAID OVERLAPPED PORTIONS OF SAID BRACKET SECTIONS DEFINING AT LEAST A PORTION OF THE MAGNET FLUX PATH BETWEEN SAID POLE PORTIONS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |