Patent US3961213A successfully refreshed from Google Patents.
US3961213A
Expired / Lapsed
US
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Motion transformer
Assignee: Suwa Seikosha KK
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Filing: 1974-06-07
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Granted: 1976-06-01
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Expires: 1994-06-07
Abstract
Abstract A rotary motion transformer particularly adapted to provide continuous rotary motion to a driven member in response to an intermittently rotated driving member is provided. The driven member and the driving member are oppositely poled magnetic permeable members disposed proximate to each other to provide a flux field therebetween. The driven rotary member is disposed in a viscous damping reservoir, the viscous damping reservoir effecting smooth and continuous rotation of the driven member.
Inventors
- 👤 Kenichi Koike
- 👤 Yoshikazu Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:53
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/10; H02K49/104; H02K49/108; G; G04; G04B; G04B11/00; G04B11/001; G04B11/005; G04C; G04C3/00; G04C3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A rotary motion transformer comprising a permanent magnet driving member having two opposite polarity poles; a permanent magnet rotatable driven member having two opposite polarity poles, said driven member and driving member being disposed to define a flux field therebetween and rotate about the same axis; and a viscous damping means, said driven member being rotatably disposed in said viscous damping means, said driven member being continuously rotated in response to the intermittent rotation of said driving member and a rotatable following permanent magnet having two opposite polarity poles axially aligned with said driven magnet to define a flux field therebetween, said following magnet being continuously rotated in response to the rotation of said driven magnet.
Claim 2
Dependent Claim
116 words
A rotary motion transformer comprising a permanent magnet driving member having two opposite polarity poles; a permanent magnet rotatable driven member having two opposite polarity poles, said driven member and driving member being disposed to define a flux field therebetween and rotate about the same axis; and a viscous damping means, said driven member being rotatably disposed in said viscous damping means, said driven member being continuously rotated in response to the intermittent rotation of said driving member and a rotatable following permanent magnet having two opposite polarity poles axially aligned with said driven magnet to define a flux field therebetween, said following magnet being continuously rotated in response to the rotation of said driven magnet.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |