公开(公告)号：US3797171A

公开(公告)日：1974-03-19

申请号：US3797171D

申请日：1972-08-25

Applicant: FARMER R

Inventor： FARMER R

IPC: E05F15/16

CPC classification number: E05F15/676 ,  E05Y2201/434 ,  E05Y2600/46 ,  E05Y2900/106

Abstract: A door operating device having two identical sets of rollers spaced from one another along a guide rail. Each set of rollers has a roller engaging a surface of the guide rail, and another, opposed roller engaging another surface of the same guide rail. A frame supported by the rollers for movement therewith has mounted thereon a reversible motor and a drive train for transmitting power from the motor to a roller of each of the roller sets. A bar connected to the frame is attached to a shock absorbing arrangement mounted on a door to be opened and closed by the device. A control system including limit switches on the frame and triggering members associated with the rail limits and reverses movement of the device along the rail.

Abstract translation: 门操作装置具有沿导轨彼此间隔开的两组相同的辊。 每组辊子具有与导轨的表面接合的辊，而另一个相对的辊接合在相同导轨的另一个表面上。 由辊支撑的用于运动的框架安装有可逆电动机和用于将电力从电动机传递到每个辊组的辊的传动系。 连接到框架的杆被附接到安装在门上以由装置打开和关闭的减震装置。 一种控制系统，包括框架上的限位开关和与轨道相关联的触发构件，并限制装置沿轨道的移动。