公开(公告)号：US3890744A

公开(公告)日：1975-06-24

申请号：US44709774

申请日：1974-03-01

Applicant: GIAMBALVO GEORGE

Inventor： GALIS MARTIN A

IPC: E05F15/14

CPC classification number: E05F15/643 ,  E05Y2201/216 ,  E05Y2201/218 ,  E05Y2201/246 ,  E05Y2201/462 ,  E05Y2201/47 ,  E05Y2201/652 ,  E05Y2201/668 ,  E05Y2600/13 ,  E05Y2900/132

Abstract: A patio door operating unit comprises a housing which mounts on the floor beside the location that the door occupies when the sliding door is in its open position. Within the housing in an endless belt which engages the door adjacent its bottom and is trained for movement along a path at the bottom of the door. This belt is driven by an electric motor. There are limit switches to stop the electric motor at the open and closed positions of the door. The belt is tightened by a solenoid connected to the motor circuit so that when the electric power fails the belt is loose and the door can be moved by hand.

Abstract translation: 天井门操作单元包括一个壳体，该壳体安装在当滑动门处于其打开位置时门占据的位置旁边的地板上。 在壳体内的环形带中，其邻近其底部接合门，并被训练为沿着门底部的路径移动。 该皮带由电动马达驱动。 有限位开关在门的打开和关闭位置停止电动机。 皮带被连接到电机电路的螺线管拧紧，这样当电源发生故障时，皮带松动，可以手动移动门。