发明授权
- 专利标题: Electromagnetic camera shutter
- 专利标题(中): 电磁相机快门
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申请号: US628070申请日: 1996-04-04
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公开(公告)号: US5608484A公开(公告)日: 1997-03-04
- 发明人: Edward P. Furlani , William Mey , Thomas M. Stephany , J. Kelly Lee
- 申请人: Edward P. Furlani , William Mey , Thomas M. Stephany , J. Kelly Lee
- 申请人地址: NY Rochester
- 专利权人: Eastman Kodak Company
- 当前专利权人: Eastman Kodak Company
- 当前专利权人地址: NY Rochester
- 主分类号: G03B9/36
- IPC分类号: G03B9/36
摘要:
An electromagnetic camera shutter including an electrically conductive shutter blade and electrically conductive springs for urging the shutter blade into a first or a second position from a compressed position between the first and the second position. A permanent magnet is associated with said shutter blade and a control device applies a current through the springs and the shutter blade in a first direction to generate an electromagnetic field between the shutter blade and the permanent magnet so as to move the shutter blade from the first position to the second position and alternately, applies a current through the springs and the shutter blade in a second direction so as to move the shutter blade from the second position to the first position.
公开/授权文献
- US4623639A Peptide derivatives 公开/授权日:1986-11-18
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