Patent US3356876A successfully refreshed from Google Patents.
US3356876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous motor
Assignee: IG TECHNOLOGIES Inc A CORP OF
•
Filing: 1960-04-05
•
Granted: 1967-12-05
•
Expires: 1980-04-05
Abstract
No abstract record available.
Inventors
- 👤 Richard A Scholten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:21
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/38; H02K21/42; H02K21/12; H02K21/125; H02K21/24; H02K21/44; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
AN ELECTRICAL MOTOR COMPRISING MAGNETIC CORE MEANS DEFINING A MAGNETIC CIRCUIT AND HAVING FIRST AND SECOND SERIES OF MAGNETIC POLE PORTIONS ARRANGED IN CIRCUMFERENTIALLY SPACED RELATION ABOUT A LONGITUDINAL AXIS, SAID FIRST SERIES OF CIRCUMFERENTIALLY SPACED POLE PORTIONS BEING RADIALLY DISPLACED FROM SAID SECOND SERIES OF CIRCUMFERENTIALLY SPACED POLE PORTIONS, ELECTRICAL WINDING MEANS LINKING SAID MAGNETIC CIRCUIT TO GENERATE A FLUCTUATING MAGNETIC FLUX THEREIN, AND A ROTOR OF PERMANENT MAGNET MATERIAL MOUNTED FOR ROTATION ABOUT SAID AXIS AND HAVING A SERIES OF RADIALLY DISPLACED PRE-MAGNETIZED POLE PORTIONS EXTENDING IN CIRCUMFERENTIALLY SPACED RELATIONSHIP ADJACENT EACH OF SAID FIRST AND SECOND SERIES OF POLE PORTIONS, SAID POLE PORTIONS COACTING TO PRODUCE ROTATION OF SAID ROTOR WHEN SAID ELECTRICAL WINDING MEANS IS ENERGIZED TO GENERATE SAID FLUCTUATING MAGNETIC FLUX IN SAID MAGNETIC CIRCUIT.
Claim 2
Dependent Claim
130 words
AN ELECTRICAL MOTOR COMPRISING MAGNETIC CORE MEANS DEFINING A MAGNETIC CIRCUIT AND HAVING FIRST AND SECOND SERIES OF MAGNETIC POLE PORTIONS ARRANGED IN CIRCUMFERENTIALLY SPACED RELATION ABOUT A LONGITUDINAL AXIS, SAID FIRST SERIES OF CIRCUMFERENTIALLY SPACED POLE PORTIONS BEING RADIALLY DISPLACED FROM SAID SECOND SERIES OF CIRCUMFERENTIALLY SPACED POLE PORTIONS, ELECTRICAL WINDING MEANS LINKING SAID MAGNETIC CIRCUIT TO GENERATE A FLUCTUATING MAGNETIC FLUX THEREIN, AND A ROTOR OF PERMANENT MAGNET MATERIAL MOUNTED FOR ROTATION ABOUT SAID AXIS AND HAVING A SERIES OF RADIALLY DISPLACED PRE-MAGNETIZED POLE PORTIONS EXTENDING IN CIRCUMFERENTIALLY SPACED RELATIONSHIP ADJACENT EACH OF SAID FIRST AND SECOND SERIES OF POLE PORTIONS, SAID POLE PORTIONS COACTING TO PRODUCE ROTATION OF SAID ROTOR WHEN SAID ELECTRICAL WINDING MEANS IS ENERGIZED TO GENERATE SAID FLUCTUATING MAGNETIC FLUX IN SAID MAGNETIC CIRCUIT.
References Cited (Backward Citations)
US1966897A
Cited
US1967782A
Cited
US2212192A
Cited
US2427584A
Cited
US2572632A
Cited
US2553760A
Cited
US2541830A
Cited
US2691112A
Cited
US2677776A
Cited
US2864018A
Cited
US2794137A
Cited
US2997611A
Cited
US3059131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |