Patent ID: 7240715

Claim:
A system for limiting retracting movement of a roller in a covering for an architectural opening comprising in combination: a headrail; a roller mounted in said headrail for reversible rotating movement between extended and retracted positions, said roller having a flexible shade material mounted thereon so as to be wrappable about said roller in said retracted position and unwrapped from said roller in said extended position, said shade material having a first edge connected to said roller and a second opposite free edge having a bottom rail thereon, and an adjustable stop mounted on said headrail, said stop including a first element secured to said headrail and a second element pivotally mounted on said first element, an indexing system on said stop for selectively limiting pivotal movement of said second element relative to said first element and for permitting a plurality of preselected fixed relationships between said first and second elements, said second element including an abutment stop adapted to overlie said roller without engaging the shade material on said roller and engage said bottom rail to prevent rotation of said roller in one direction upon said roller being positioned in said retracted position.