Abstract: An apparatus for effecting and controlling the movement of a window covering member between different positions in response to a disturbance of the window covering. Also, an apparatus for assisting the manipulation of a window covering by way of potential energy stored in a spring. Also a torque sending device having a design that is insensitive to component tolerances.
Type:
Grant
Filed:
May 3, 2002
Date of Patent:
January 20, 2004
Assignee:
Techniku, Inc.
Inventors:
Robert W. Collett, Daniel A. Huber, Steven J. Wolf, Paul Y. Timmer