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Patent US4342018A successfully refreshed from Google Patents.
US4342018A
Expired / Lapsed
US
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Magnet control device for cameras
Assignee: Fujinon Corp
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Filing: 1980-07-11
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Granted: 1982-07-27
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Expires: 2000-07-11
Abstract
Abstract In a camera, a magnetic control device for controlling a shutter release mechanism or the like includes an electromagnet and a member to be attracted by the electromagnetic. The attracted member is mounted on an axle secured to a control lever. Between the axle and the attracted member, a resilient material is provided for allowing tilting of the attracted member around the axle so that the attracted member can be put into perfect face contact with the attracting face of the electromagnet even if the attracted face of the attracted member is at first not in parallel to the attracting face of the electromagnet.
Inventors
- 👤 Saburo Numata
- 👤 Fumio Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:47
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A magnet control device for use in a camera comprising a magnet means having an attracting face, a member to be attracted by the magnet means having an attracted face to be put into contact with the attracting face of the magnet means, and a control lever carrying said attracted member, said attracted member being mounted around an axle secured to said control lever for rotation thereabout, wherein the improvement comprises a resilient material disposed between said axle and said attracted member for allowing said attracted member to tilt around the axle to follow an inclination of the attracting face, whereby said attracted face is positionable in perfect face contact with said attracting face.
Claim 2
Dependent Claim
114 words
A magnet control device for use in a camera comprising a magnet means having an attracting face, a member to be attracted by the magnet means having an attracted face to be put into contact with the attracting face of the magnet means, and a control lever carrying said attracted member, said attracted member being mounted around an axle secured to said control lever for rotation thereabout, wherein the improvement comprises a resilient material disposed between said axle and said attracted member for allowing said attracted member to tilt around the axle to follow an inclination of the attracting face, whereby said attracted face is positionable in perfect face contact with said attracting face.
Claim 3
Dependent Claim
41 words
A magnet control device as defined in claim 1 wherein said attracted member has a through hole having a diameter larger than the outer diameter of said axle, and said resilient material is provided between the axle and the through hole.
Claim 4
Dependent Claim
33 words
A magnet control device as defined in claim 2 wherein said through hole has a portion at which the diameter thereof is reduced to the diameter substantially equal to that of the axle.
Claim 5
Dependent Claim
33 words
A magnet control device as defined in claim 2 wherein said axle has a portion at which the diameter thereof is enlarged to the diameter substantially equal to that of the through hole.
References Cited (Backward Citations)
US3736540A
Cited
US4172241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-26 | 1986-01-25 | 1986-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-26 | 1990-01-25 | 1990-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-26 | 1994-01-25 | 1994-07-27 | $7700.00 | Window Closed / Lapsed |