Patent ID: 7819166

Claim:
A window covering exhibiting simple positioning of the covering as desired, the window covering comprising in combination: an at least partially light occluding layer; said layer extending between an upper end and a lower end, said upper end adapted to be attached to a lintel above a window; said layer adapted to be adjusted in height between said upper end and said lower end; a substantially rigid bottom member coupled to said lower end; at least one cord having a first end held in fixed position relative to said upper end of said layer and a second end opposite said first end extending past said bottom member; said cord routed through a friction applying member coupled to said bottom rail, said friction applying member applying enough friction force to said cord to keep said bottom member in fixed position relative to said cord when only gravity loads are applied to said bottom member and said layer; wherein said friction applying member includes a housing fixed to said bottom member, said housing including a cord path passing adjacent said housing, said housing including a movable engagement surface therein biased against said cord to apply friction to said cord within said housing; wherein said movable engagement surface is located upon a surface of a button with a compression spring abutting against a surface of said button opposite said movable engagement surface, said compression spring applying force on said button pushing said button against said cord lateral to a length of said cord; and wherein at least one roller is located within said housing, said at least one cord routed around said roller to transition said cord from extending in a horizontal direction to extending in a vertical direction, said spring and said button oriented to apply friction force on said cord where said cord extends horizontally through said housing before passing over said roller and extending substantially vertically out of said housing and out of a bottom of said base member.