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1. 发明授权

US3895766A Film-spool drive in cinematographic equipment 失效
标题翻译：电影摄影设备中的电影卷轴驱动
公开(公告)号：US3895766A
公开(公告)日：1975-07-22
申请号：US39504773
申请日：1973-09-07
申请人： THEVENAZ JEAN
发明人： THEVENAZ JEAN
IPC分类号： G03B19/18 , G03B1/56 , G03B21/43 , G03B1/54
CPC分类号： G03B1/56 , G03B21/43
摘要： A film-spool apparatus for cinematographic equipment comprising first and second film-spool support plates, drive means selectively coupled to each of said plates for driving said first plate in a direction to wind the film on its associated spool and to drive the said second plate to unwind the film on its associated spool, and control means operable in response to a predetermined amount of tension in the film loop associated with each of said respective plates for disengaging the drive means from said first plate when its associated film loop tension is above a predetermined amount and for engaging said drive means with said second plate when its associated film loop tension is above a predetermined amount.
摘要翻译：一种用于电影设备的胶片卷轴装置，包括第一和第二胶片卷筒支撑板，驱动装置选择性地联接到每个所述板，用于沿着将膜卷绕在其相关卷轴上的方向驱动所述第一板，并且驱动所述第二板在相关联的卷轴上展开胶片，以及控制装置，其可响应于与每个所述相应印版相关联的胶片环中的预定量的张力而操作，用于当驱动装置与所述第一印版相关联时，并且当其相关联的膜回路张力高于预定量时，用于将所述驱动装置与所述第二板接合。

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