US3319104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starter device for a d.c. electric motor
Assignee: Panasonic Holdings Corp
•
Filing: 1963-10-03
•
Granted: 1967-05-09
•
Expires: 1983-10-03
Abstract
No abstract record available.
Inventors
- 👤 Yasuoka Shine
- 👤 Tanaka Yutaka
- 👤 Sasabe Kaoru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:27
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A STARTER DEVICE FOR A D.C. MOTOR HAVING INTERPOLES DISPOSED BETWEEN ADJACENT MAIN FIELD POLES, SAID INTERPOLES HAVING A STARTING COIL WOUND THEREAROUND, COMPRISING MEANS FOR DETECTING ROTOR POSITION OF A PERMANENT MAGNET ROTOR IN RESPECT TO SAID INTERPOLES, MEANS FOR CONVERTING THE DIRECTION OF CURRENT FLOWING THROUGH SAID STARTING COIL IN ACCORDANCE WITH THE DETECTED ROTOR POSITION TO APPLY TORQUE IN A DESIRED DIRECTION TO SAID ROTOR, MEANS FOR TERMINATING OPERATIONS OF SAID MEANS FOR DETECTING ROTOR POSITION OF SAID ROTOR AND SAID MEANS FOR CONVERTING THE DIRECTION OF CURRENT THROUGH SAID STARTING COIL AFTER SAID ROTOR HAS ATTAINED A PREDETERMINED ROTATIONAL SPEED.
Claim 2
Dependent Claim
104 words
A STARTER DEVICE FOR A D.C. MOTOR HAVING INTERPOLES DISPOSED BETWEEN ADJACENT MAIN FIELD POLES, SAID INTERPOLES HAVING A STARTING COIL WOUND THEREAROUND, COMPRISING MEANS FOR DETECTING ROTOR POSITION OF A PERMANENT MAGNET ROTOR IN RESPECT TO SAID INTERPOLES, MEANS FOR CONVERTING THE DIRECTION OF CURRENT FLOWING THROUGH SAID STARTING COIL IN ACCORDANCE WITH THE DETECTED ROTOR POSITION TO APPLY TORQUE IN A DESIRED DIRECTION TO SAID ROTOR, MEANS FOR TERMINATING OPERATIONS OF SAID MEANS FOR DETECTING ROTOR POSITION OF SAID ROTOR AND SAID MEANS FOR CONVERTING THE DIRECTION OF CURRENT THROUGH SAID STARTING COIL AFTER SAID ROTOR HAS ATTAINED A PREDETERMINED ROTATIONAL SPEED.
References Cited (Backward Citations)
US3041513A
Cited
US3109980A
Cited
US3058045A
Cited
US3067370A
Cited
US3175140A
Cited
US3200315A
Cited
US3185910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |