公开(公告)号：US3981203A

公开(公告)日：1976-09-21

申请号：US517734

申请日：1974-10-24

Applicant: Gardner R. Williams

Inventor： Gardner R. Williams

IPC: E05D15/06 ,  E05F15/14 ,  F16H19/02 ,  F16H21/50

CPC classification number: E05F15/641 ,  E05F15/635 ,  F16H19/025 ,  E05D15/0652 ,  E05Y2201/674 ,  E05Y2800/00 ,  E05Y2900/132 ,  Y10T74/18056

Abstract: A door operator includes a threadless drive shaft, a carriage mounting skewed rollers engaging the drive shaft to move the carriage along the shaft upon shaft rotation, a drive motor having a shaft coaxial with the threadless shaft and a helical coupling connecting the shafts together. The coupling comprising a plurality of closely spaced helical convolutions with the end of the coupling secured to the motor shaft and the drive shaft, respectively. The coupling includes means for decreasing the shear stresses imposed on the end portions of the convolutions.

Abstract translation: 门操作器包括无螺纹驱动轴，滑架安装倾斜的滚子，其接合驱动轴，以在轴旋转时沿着轴移动托架，具有与无螺纹轴同轴的轴的驱动马达和将轴连接在一起的螺旋联接器。 联接器包括多个紧密间隔的螺旋卷积，其中联接器的端部分别固定到马达轴和驱动轴。 联接器包括用于减小施加在回转端部上的剪切应力的装置。