Patent ID: 9615687
Date: 2017-04-11
CPC Classifications: A47H,B23B,B23Q,E06B,Y10T

Claim:
1. A method of operating a window covering assembly, the steps comprising: providing a drive element extending a lateral length from a first end to a second end, the drive element having a first clockwise helical guide structure and a first counterclockwise helical guide structure wherein the first clockwise helical guide structure and first counterclockwise helical guide structure intermittently intersect one another; positioning a first drive attachment element around the drive element; attaching shade material to the first drive attachment element; operably connecting a motor to the drive element such that operation of the motor rotates the drive element; driving the first drive attachment element in a first lateral direction by rotating the drive element in a first rotational direction thereby moving the shade material from an open position to a closed position; driving the first drive attachment element in a second lateral direction, opposite the first lateral direction, by rotating the drive element in a second rotational direction, opposite the first rotational direction thereby moving the shade material from a closed position to an open position.