发明授权
- 专利标题： Photographic film drive system employing inertia dumper
- 专利标题（中）： 摄影胶片驱动系统
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申请号： US470179申请日： 1974-05-15
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公开(公告)号： US3947187A公开(公告)日： 1976-03-30
- 发明人: Joseph E. Murray, Jr.
- 申请人： Joseph E. Murray, Jr.
- 申请人地址： MA Cambridge
- 专利权人： Polaroid Corporation
- 当前专利权人： Polaroid Corporation
- 当前专利权人地址： MA Cambridge
- 主分类号： G03B1/40
- IPC分类号： G03B1/40 ; G03B21/43
摘要：
Photographic processing and projector apparatus having a drive system including a gear train for advancing and rewinding the film on spools within a film cassette. Included in the gear train is an inertia dumper which is operative at the conclusion of a high speed rewind run to reduce film tension and cassette shock caused by the abrupt cessation of film movement at the end of the film.
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