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1. 发明授权

US4122629A Dock safety apparatus 失效
标题翻译：码头安全装置
公开(公告)号：US4122629A
公开(公告)日：1978-10-31
申请号：US761588
申请日：1977-01-24
申请人： Virgil G. Rennick
发明人： Virgil G. Rennick
IPC分类号： B65G69/00 , B65G69/28 , E06B11/00 , E05F11/00
CPC分类号： E06B11/00 , B65G69/005 , B65G69/2882
摘要： A safety apparatus which includes a gate positioned adjacent the free edge of a loading dock and swingable between a substantially horizontal position wherein it is adapted to extend across the rear of a truck, and a vertical position permitting access between the dock and the truck. In a preferred embodiment, the swinging movement of the gate is controlled by an electrical switch mounted on a wheel chock located within the truck parking area. When a truck is positioned adjacent the dock, the chock is wedged in front of the truck tire. This causes activation of the switch so that a motor is energized to cause the gate to be swung upwardly into an approximate vertical position. Whenever the switch is released, as due to removal of the chock from engagement with the tire, then the motor is automatically reversely energized to swing the gate into its lowered horizontal position.
摘要翻译：一种安全装置，其包括邻近装载基座的自由边缘定位并在基本上水平的位置之间摆动的门，其中其适于延伸穿过卡车的后部，以及允许在码头和卡车之间进入的垂直位置。在优选实施例中，门的摆动运动通过安装在位于卡车停放区域内的轮轴承座上的电开关来控制。当卡车位于靠近码头的地方时，车轴楔入卡车轮胎的前方。这导致开关的激活，使得电动机被通电以使门被向上摆动到大致垂直位置。每当开关被释放时，由于从与轮胎接合的轴承座的移除，电动机自动反向通电以将门摆放到其降低的水平位置。

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