Patent ID: 6128858
Filing Date: 2000-10-10
Classification: E05F,Y10S,Y10T

Abstract:
An operator for controlling the movement of a window sash relative to a frame, the operator comprising:a base attachable to a frame;a linkage secured to the base and attachable to a window sash to control the movement of the window sash relative to a frame;an axially extending rotatable input shaft rotatably secured to the base and having a threaded portion driveably engaging the linkage, the input shaft having a hollow female drive region formed therein which axially overlaps with said threaded portion;a drive member;a transmission shaft secured on one end to the drive member and having a male drive region disposable within and mateable with the input shaft female drive region to transfer rotation of the transmission shaft to the input shaft; andmeans for locking the transmission shaft to one of the base and the input shaft to hold the male drive region in mateable engagement with the female drive region.