Patent ID: 7578334
Filing Date: 2009-08-25
Classification: E06B

Abstract:
1. An input assembly for a control system adapted to selectively extend and retract a covering for an architectural opening, wherein the control system has a transmission configured to receive a rotational input in a first rotational direction and selectively provide a rotational output in the first rotational direction or in a second rotational direction, the input assembly comprising: an operating element; a spool rotatably mounted on a first axle and adapted to storably receive the operating element; a biasing element coupled to the spool and adapted to cause the spool to retract the operating element from an extended state onto the spool; a pulley rotatably mounted on a second axle and adapted to receive the operating element; and an unbiased shift arm pivotally mounted on a third axle and including a pawl tooth and a first surface for engaging the operating element.