发明授权
- 专利标题: Control device of shutter for camera
- 专利标题(中): 相机快门控制装置
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申请号: US744759申请日: 1976-11-24
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公开(公告)号: US4143957A公开(公告)日: 1979-03-13
- 发明人: Ichiro Nemoto , Tadashi Nakagawa , Masanori Watanabe , Mitsuo Koyama , Eiichi Onda
- 申请人: Ichiro Nemoto , Tadashi Nakagawa , Masanori Watanabe , Mitsuo Koyama , Eiichi Onda
- 申请人地址: JPX
- 专利权人: Seiko Koki Kabushiki Kaisha
- 当前专利权人: Seiko Koki Kabushiki Kaisha
- 当前专利权人地址: JPX
- 优先权: JPX50-140959 19751125; JPX50-140960 19751125
- 主分类号: G03B9/18
- IPC分类号: G03B9/18 ; G03B9/62 ; G03B9/08
摘要:
A camera shutter includes a pair of spaced apart base plates supporting the various shutter components. At least one of the base plates is formed entirely of synthetic resin material which is electrically insulative and which possesses lubricating properties. The synthetic resin base plate has a set of tubular portions extending toward and connected to the other base plate and also has a set of shafts turnably supporting some of the shutter components, such as the control lever and control cam. The synthetic resin base plate also includes a hollow winding frame about which is wound a coil and in which is slidably inserted an armature to form an electromagnet for use in controlling the shutter operation. The use of a synthetic resin base plate dispenses with the necessity of separate lubrication and enables formation of a smaller shutter.
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