发明授权
- 专利标题： Shutter device
- 专利标题（中）： 快门装置
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申请号： US13302823申请日： 2011-11-22
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公开(公告)号： US08511917B2公开(公告)日： 2013-08-20
- 发明人: Yoshiyuki Matsumoto
- 申请人： Yoshiyuki Matsumoto
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Canon USA Inc IP Division
- 优先权： JP2010-261598 20101124
- 主分类号： G03B9/10
- IPC分类号： G03B9/10
摘要：
A blade lever is provided with a roller bearing portion, which extends towards a shaft around which a roller is rotatably supported to prevent falling off of the roller. The roller bearing portion is provided within a range of movement of the shaft when the blade lever is driven in a direction of opening an aperture by a first blade and a second blade with an urging force of a blade return spring.
公开/授权文献
- US20120128346A1 SHUTTER DEVICE 公开/授权日：2012-05-24