US3310697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-starting synchronous motor
Assignee: Oak Electro Netics Corp
•
Filing: 1964-11-18
•
Granted: 1967-03-21
•
Expires: 1984-11-18
Abstract
No abstract record available.
Inventors
- 👤 Melvin A Lace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:21
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/38; H02K21/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A SELF-STARTING SYNCHRONOUS MOTOR COMPRISING: A WINDING FOR PRODUCING AN ALTERNATING MAGNETIC FIELD, ENCIRCLING A BOBBIN DISPOSED ABOUT A CENTRAL AXIS, SAID BOBBIN HAVING A CYLINDRICAL APERTURE; AN ANNULAR PERMANENT MAGNET STATOR WITHIN SAID APERTURE AND SPACED ABOUT SAID CENTRAL AXIS, SAID STATOR HAVING A PERIPHERY WHICH IS COMPOSED OF ADJACENT SECTIONS OF OPPOSITE MAGNETIC POLARITY; A U-SHAPED ROTOR DISPOSED TO ROTATE ABOUT SAID CENTRAL AXIS, SAID ROTOR BEING COMPOSED OF A CENTRAL PORTION EXTENDING GENERALLY PERPENDICULAR TO SAID AXIS WITH SALIENT POLES PROJECTING THEREFROM GENERALLY PARALLEL TO SAID AXIS, SAID SALIENT POLES HAVING FREE ENDS WHICH ARE INTERPOSED BETWEEN SAID BOBBIN AND SAID ANNULAR STATOR, AND MEANS INCLUDING SAID SALIENT POLES FOR COMPLETING A LOW RELUCTANCE PATH FOR SAID ALTERNATING MAGNETIC FIELD.
Claim 2
Dependent Claim
123 words
A SELF-STARTING SYNCHRONOUS MOTOR COMPRISING: A WINDING FOR PRODUCING AN ALTERNATING MAGNETIC FIELD, ENCIRCLING A BOBBIN DISPOSED ABOUT A CENTRAL AXIS, SAID BOBBIN HAVING A CYLINDRICAL APERTURE; AN ANNULAR PERMANENT MAGNET STATOR WITHIN SAID APERTURE AND SPACED ABOUT SAID CENTRAL AXIS, SAID STATOR HAVING A PERIPHERY WHICH IS COMPOSED OF ADJACENT SECTIONS OF OPPOSITE MAGNETIC POLARITY; A U-SHAPED ROTOR DISPOSED TO ROTATE ABOUT SAID CENTRAL AXIS, SAID ROTOR BEING COMPOSED OF A CENTRAL PORTION EXTENDING GENERALLY PERPENDICULAR TO SAID AXIS WITH SALIENT POLES PROJECTING THEREFROM GENERALLY PARALLEL TO SAID AXIS, SAID SALIENT POLES HAVING FREE ENDS WHICH ARE INTERPOSED BETWEEN SAID BOBBIN AND SAID ANNULAR STATOR, AND MEANS INCLUDING SAID SALIENT POLES FOR COMPLETING A LOW RELUCTANCE PATH FOR SAID ALTERNATING MAGNETIC FIELD.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |