Patent ID: 6886295

Claim:
A brake assembly for locking a slidable sash window within a track of a frame, the track having a pair of spaced apart, opposed sidewalls, the assembly comprising: a slider body adapted for slidable motion within the track, the slider body having a central opening extending from a front face to a rear face of the slider body and having a side opening adjacent to the central opening; a brake member comprising a spring having a tip at a distal end thereof, the spring further having a curved braking surface adjacent the tip, the brake member mounted within the slider body such that the curved braking surface is adapted for reciprocal lateral movement through the side opening; a cam positioned in the central opening; wherein the slider body receives and retains the brake member and the cam is rotatable in the central opening for laterally biasing the curved braking surface for said movement through the side opening wherein the braking surface is adapted to frictionally engage one of the opposed side walls.