Patent ID: 7096626

Claim:
A housing for installation in a window sash having a slot defining a pair of opposed edges, the housing comprising: a) opposed side walls each having upper and lower edges and extending generally parallel to a longitudinal axis of said housing; b) a top wall extending along and beyond the upper edges of the opposed side walls to define a flange; c) a deflectable retainer connected with and projecting angularly away from the lower edge of each of the side walls and extending along a majority of the length of each of the side walls, each retainer having a distal free upper engagement end, such that a gap is provided between the upper engagement end of each retainer and an undersurface of the flange to accommodate reception of the opposed edges of the slot upon inward deflection of the retainers during installation, of the housing in the slot wherein the distal free upper engagement end of each deflectable retainer defines a gap between each retainer and the side wall to which the retainer is connected, and wherein the side walls, top wall and retainers constitute a one-piece monolithic structure; and d) a movable bolt disposed between and slidable generally parallel to said opposed side walls.