US3333128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature synchronous motor
Assignee: Panasonic Holdings Corp
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Filing: 1965-06-25
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Granted: 1967-07-25
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Expires: 1985-06-25
Abstract
No abstract record available.
Inventors
- 👤 Kobayashi Tsuneo
- 👤 Kanzaki Yoshitaka
- 👤 Yoshimura Koichi
- 👤 Yamamoto Yoshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:34
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A MINIATURE SYCHRONOUS MOTOR COMPRISING FIELD POLES ARRANGED IN A CIRCUIT, AND A PERMANENT MAGNET ROTOR HAVING ITS POLES ARRANGED OPPOSITE SAID FIELD POLES, SAID PERMANENT MAGNET ROTOR HAVING MEANS PROVIDED THEREON SO THAT MAGNETIC FLUX IS DISTRIBUTED IN A WAVY MANNER ON THE OUTER PERIPHERAL POLE-FACE OF EACH OF SAID ROTOR POLES AND ATTENUATES FRON ITS MAXIMUM VALUE AT DIFFERENT RATES ON OPPOSITE SIDES OF THE MAXIMUM VALUE THEREOF, AND SAID PERMANENT MAGNET ROTOR BEING ROTATED IN A DIRECTION IN WHICH THE GRADIENT OF MAGNETIC FLUX DISTRIBUTION MAKES A STEEP FALL.
Claim 2
Dependent Claim
92 words
A MINIATURE SYCHRONOUS MOTOR COMPRISING FIELD POLES ARRANGED IN A CIRCUIT, AND A PERMANENT MAGNET ROTOR HAVING ITS POLES ARRANGED OPPOSITE SAID FIELD POLES, SAID PERMANENT MAGNET ROTOR HAVING MEANS PROVIDED THEREON SO THAT MAGNETIC FLUX IS DISTRIBUTED IN A WAVY MANNER ON THE OUTER PERIPHERAL POLE-FACE OF EACH OF SAID ROTOR POLES AND ATTENUATES FRON ITS MAXIMUM VALUE AT DIFFERENT RATES ON OPPOSITE SIDES OF THE MAXIMUM VALUE THEREOF, AND SAID PERMANENT MAGNET ROTOR BEING ROTATED IN A DIRECTION IN WHICH THE GRADIENT OF MAGNETIC FLUX DISTRIBUTION MAKES A STEEP FALL.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |