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1. 发明授权

US3955661A Apparatus for opening and closing door members and the like 失效
标题翻译：用于打开和关闭门构件等的装置
公开(公告)号：US3955661A
公开(公告)日：1976-05-11
申请号：US466280
申请日：1974-05-02
申请人： Jakhim B. Popper , Riza E. Murteza
发明人： Jakhim B. Popper , Riza E. Murteza
IPC分类号： E05F15/00 , E05F15/16 , F16H13/08 , F16D11/04 , E05F15/02 , F16H13/06
CPC分类号： F16H13/08 , E05F15/41 , E05F15/614 , E05F15/652 , E05F15/668 , E05F15/686 , E05Y2400/552 , E05Y2900/104 , E05Y2900/106
摘要： An improved apparatus for opening and closing door members and the like such as elevator doors and garage doors, for example, wherein the driver rotatingly drives a driver shaft coupled to a driven shaft via a ball drive assembly, the ball drive assembly not only coupling the driver and the driven shafts so the driven shaft is rotated at a reduced rate of speed, but also cooperating to provide a portion of a torque control for sensing obstructions in the door member path of travel and automatically stopping or reversing the opening or the closing of the door member. The ball drive assembly has a relatively low moment of inertia, which facilitates faster stopping of the door member travel, and the internal friction of the ball drive assembly is greater than a pulley-belt type of coupling, for example, thereby increasing the amount of force required to move the door member from a stopped position.
摘要翻译：一种用于打开和关闭门构件等的改进的装置，例如电梯门和车库门，例如，其中驾驶员经由球驱动组件旋转地驱动联接到从动轴的驾驶员轴，球驱动组件不仅将驱动器和从动轴，使得从动轴以降低的速度旋转，而且还协作以提供扭矩控制的一部分，用于感测门构件行进路径中的障碍物并自动停止或反转开启或关闭门员。滚珠驱动组件具有相对较低的惯性矩，这有助于门构件行进的更快停止，并且球驱动组件的内摩擦力大于皮带轮类型的联接器，从而增加了将门构件从停止位置移动所需的力。

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