Patent ID: 8210227

Claim:
A cord lock for a covering for an architectural opening wherein said covering includes a headrail, a shade material, and a control cord comprising: a cord lock mountable on said headrail for securing said lift cord in a desired position relative to said headrail, and said cord lock having a base made of a preselected material, said base including a substantially planar leg; a first cord portion extending upward from a first end of said leg; a bottom portion positioned below and extending from a second end of said first cord portion opposite of said leg; a second cord portion connected to said bottom portion and terminating in a free end; and a cord guide operably connected to said base for guiding said control cord and including a first lobe having a first convex arcuate top wall having a length of extension, and positioned adjacent a top surface of said first cord portion, such that a bottom portion of said first lobe is substantially coextensive with said top surface of said first cord portion; a strap extending from a terminal end of said first lobe; a second lobe having a side extending upwardly from and substantially perpendicular to said strap and having a second convex arcuate top wall having a length of extension where the length of extension of the second convex arcuate top wall forms an angle relative to said length of extension of the first convex arcuate top wall, and an end forming a lip extending downwardly from said convex arcuate top wall at an angle relative to said second cord portion, said second convex top wall positioned adjacent a top surface of said second cord portion, and said lip extending away from said second cord portion forming a gap between at least a portion of said lip and a portion of a vertical wall of said second cord portion; and wherein a surface of at least one of said first lobe and said second lobe is a guide surface across which said cord slidably passes, said guide surface being made of a harder and/or higher melting temperature material than said preselected material of said base to prevent undue wear to the cord as it passes across at least one of said guide surface.