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1. 发明授权

US4380819A Spotfilming apparatus 失效
标题翻译：点胶装置
公开(公告)号：US4380819A
公开(公告)日：1983-04-19
申请号：US209739
申请日：1980-11-24
申请人： Dennis Everett , Vjekoslav Jukic
发明人： Dennis Everett , Vjekoslav Jukic
IPC分类号： G03B42/02 , G21F5/04
CPC分类号： G03B42/025
摘要： A masking apparatus and palpitator cone drive system for an X-ray spotfilming device. The masking apparatus comprises first and second pairs of shutter-like members mounted for reciprocating movement in two mutually orthogonal directions. Each mask member of the second pair includes first and second relatively moveable elements that operate in a telescope-like manner. A drive system including a reversible motor and a feedback potentiometer actuates the elements at first and second speeds so that the elements reach their retracted and extended positions simultaneously. The cone drive system includes a drive motor, a drive belt and drive assembly for driving the cone between retracted and operative positions. A cone lock is engageable with a keeper located at a cone-advanced position of the drive assembly and is released by the drive belt whenever the drive motor is energized in the cone-retracting direction.
摘要翻译：一种用于X射线斑点成像装置的掩蔽装置和触发器锥形驱动系统。掩蔽装置包括安装成用于在两个相互正交的方向上往复运动的第一和第二对挡板状构件。第二对的每个掩模构件包括以类似望远镜的方式操作的第一和第二可相对移动的元件。包括可逆电动机和反馈电位器的驱动系统以第一速度和第二速度致动元件，使得元件同时到达其缩回位置和延伸位置。锥形驱动系统包括驱动马达，驱动带和用于在缩回和操作位置之间驱动锥体的驱动组件。锥形锁可与位于驱动组件的锥形进给位置处的保持器接合，并且每当驱动马达沿锥形回缩方向通电时由驱动带释放。

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