US3242406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brushless d. c. motors
Assignee: Panasonic Holdings Corp
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Filing: 1963-10-21
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Granted: 1966-03-22
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Expires: 1983-10-21
Abstract
No abstract record available.
Inventors
- 👤 Tanaka Yutaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:05
CPC Classifications
H; H02; H02P; H02P6/00; H02P6/14; H02P6/15; H02P6/157; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/538; H02M7/53803; H02M7/53806; H02P25/00; H02P25/02; H02P25/022; H02P25/024; H02P6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A BRUSHLESS D.C. MOTOR COMPRISING A DRIVING CIRCUITS, A SWITCHING CIRCUIT, SAID SWITCHING CIRCUIT CONTAINING COILS AND SWITCHING ELEMENTS, SAID DRIVING CIRCUIT COMPRISING MAGNETIC FIELD COILS AND SAID SWITCHING COILS, A ROTOR INCLUDING A PERMANENT MAGNET, A CIRCULAR FOR DETECTING THE ROTARY PHASE OF SAID ROTOR, A BUFFER CIRCUIT WITH SAID DETECTOR SIGNAL ACTING AS AN INPUT SIGNAL, SAID BUFFER CIRCUIT IMPRESSING ON AN OUTPUT SIGNAL A PHASE LAG RELATIVE SAID
Claim 2
Dependent Claim
71 words
A BRUSHLESS D.C. MOTOR COMPRISING A DRIVING CIRCUITS, A SWITCHING CIRCUIT, SAID SWITCHING CIRCUIT CONTAINING COILS AND SWITCHING ELEMENTS, SAID DRIVING CIRCUIT COMPRISING MAGNETIC FIELD COILS AND SAID SWITCHING COILS, A ROTOR INCLUDING A PERMANENT MAGNET, A CIRCULAR FOR DETECTING THE ROTARY PHASE OF SAID ROTOR, A BUFFER CIRCUIT WITH SAID DETECTOR SIGNAL ACTING AS AN INPUT SIGNAL, SAID BUFFER CIRCUIT IMPRESSING ON AN OUTPUT SIGNAL A PHASE LAG RELATIVE SAID
References Cited (Backward Citations)
US2814769A
Cited
US2995690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |