US3404300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous motor
Assignee: US Philips Corp
•
Filing: 1966-04-26
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Granted: 1968-10-01
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Expires: 1986-04-26
Abstract
No abstract record available.
Inventors
- 👤 Croymans Jacques Johan Hendrik
- 👤 Leblans Louis Adrianus Leopold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:04
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/118; H02K7/1185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A COMPACT HIGH TORQUE SELF-STARTING SYNCHRONOUS MOTOR COMPRISING A STATOR ASSEMBLY INCLUDING A PAIR OF OPPOSITE SAID PLATES OF MAGNETIC MATERIAL, A COIL FORMER AND FIELD COIL BETWEEN SAID PLATES, INWARDLY PROJECTING POLE PIECES PRESSED FROM EACH OF SAID PLATES FOR INTERMESHED RELATIONSHIP DEFINING A CIRCULAR STATOR CAGE REMOTE FROM SAID FIELD COIL; A PERMANENT MAGNET ROTOR, HAVING PERIPHERY, ALTERNATE MAGNETIC POLARITY, MEANS JOURNALING SAID ROTOR BETWEEN SAID PLATES FOR ROTATION WITHIN SAID STATOR CAGE, A GEAR TRAIN BETWEEN SAID PLATES DRIVEN BY SAID ROTOR AND MEANS COUPLED WITH SAID GEAR TRAIN FOR PREVENTING MOVEMENT OF SAID GEAR TRAIN IN ONE DIRECTION.
Claim 2
Dependent Claim
102 words
A COMPACT HIGH TORQUE SELF-STARTING SYNCHRONOUS MOTOR COMPRISING A STATOR ASSEMBLY INCLUDING A PAIR OF OPPOSITE SAID PLATES OF MAGNETIC MATERIAL, A COIL FORMER AND FIELD COIL BETWEEN SAID PLATES, INWARDLY PROJECTING POLE PIECES PRESSED FROM EACH OF SAID PLATES FOR INTERMESHED RELATIONSHIP DEFINING A CIRCULAR STATOR CAGE REMOTE FROM SAID FIELD COIL; A PERMANENT MAGNET ROTOR, HAVING PERIPHERY, ALTERNATE MAGNETIC POLARITY, MEANS JOURNALING SAID ROTOR BETWEEN SAID PLATES FOR ROTATION WITHIN SAID STATOR CAGE, A GEAR TRAIN BETWEEN SAID PLATES DRIVEN BY SAID ROTOR AND MEANS COUPLED WITH SAID GEAR TRAIN FOR PREVENTING MOVEMENT OF SAID GEAR TRAIN IN ONE DIRECTION.
References Cited (Backward Citations)
US2234420A
Cited
US2432070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |