Patent ID: 8006735

Claim:
A covering for an architectural opening comprising in combination: a retractable cover including a bottom rail with a top surface, and a control system for moving the cover between extended and retracted positions, said control system including flexible lift elements secured to said bottom rail for raising and lowering said bottom rail when moving the cover between said retracted and extended positions, wherein said bottom rail has at least one blind hole in said top surface having a surrounding wall and an anchor in said blind hole connected to a flexible lift element to secure the lift element in the blind hole in the bottom rail, said anchor including a semi-rigid, expandable base member and a cam member movable into engagement with said base member to expand the base member into gripping engagement with said surrounding wall, said flexible lift element extending slidably through said base member and supporting said cam member by itself such that said lift element can raise said cam element into expanding engagement with said base member, said base member being made from a flexible material having an inverted U-shaped configuration with a pair of spaced side walls defining a pocket therebetween to receive said cam member and a pair of flat semi-circular legs projecting in diametrically opposite directions from the lower edges of said side walls.