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1. 发明授权

US4834310A Photographic film spool 失效
标题翻译：摄影胶片卷轴
公开(公告)号：US4834310A
公开(公告)日：1989-05-30
申请号：US145370
申请日：1988-01-19
申请人： Toshiyuki Ikariya , Kiyohiko Takahashi , Osamu Shibazaki , Nori Sakamoto
发明人： Toshiyuki Ikariya , Kiyohiko Takahashi , Osamu Shibazaki , Nori Sakamoto
IPC分类号： B65H75/28 , G03B17/30
CPC分类号： B65H75/28 , G03B17/30 , G03B2217/261
摘要： The invention provides a spool for winding a photographic roll film. The spool has a bar-shaped spool core which is slitted to lengthwise direction to form a slit for inserting a tongue-shaped end of the film having a through hole. On an inside wall of the slit, there is provided a catch claw capable of engaging the through hole. On another inside wall opposite to the above inside wall, there is provided a pressing rib for pressing and guiding the tongue-shaped end to the catch claw. A part of the outer surface of the spool core, adjoining to the inside wall of the slit in which is disposed the pressing rib, is shaped to serve as a film contact surface. The tip surface of the pressing rib and the film contact surface both jointly form a continuous shape of a circular arc.
摘要翻译：本发明提供了一种用于卷绕照相辊膜的卷轴。阀芯具有沿长度方向切割的条形阀芯，以形成用于插入具有通孔的膜的舌形端部的狭缝。在狭缝的内壁上设有能够与通孔接合的卡爪。在与上述内壁相对的另一个内壁上，设置有用于将舌形端部按压并引导到卡爪的加压肋。卷轴芯的外表面的与其中设置有加压肋的狭缝的内壁相邻的一部分被成形为用作膜接触表面。按压肋和薄膜接触表面的尖端表面共同形成圆弧的连续形状。

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