Touch-controlled window covering system

Abstract

An apparatus for cordlessly retracting and releasing a roller blind or a roller shade is provided. The apparatus allows the user to effectuate repositioning the shade or blind at a desired position, by lightly tapping or touching or maneuvering the shade or blind. The apparatus includes a screen and a roller tubing that rotates to release or retract the screen. The screen has a bottom rail attached to its bottom. The apparatus includes a lifting spring that is pre-torqued for rotating the roller tubing to lift the screen. The apparatus also includes a rotation damper for providing a friction to dampen or stop a rotation of the roller tubing. The lifting spring is pre-compressed to provide sufficient torque and energy to retract the screen. The bottom rail is configured to match the torque produced by the lifting spring to achieve an equilibrium when the user is not touching the screen.

Dependencies are inferred from the claim text.