Patent ID: 7194839

Claim:
A brake assembly for locking a slidable sash window or door within a track of a frame, the track having an elongated base and a pair of spaced apart, opposed sidewalls extending perpendicular from the base, each sidewall having an inner shoulder spaced from and parallel to the base, the assembly comprising: a slider body having a central opening, a side opening in the slider body being in communication with the central opening; a brake member slidably positioned within the side opening, the brake member having an inner surface; a cam adapted to receive a pivot member mounted on either the sash window or door, the cam positioned in the central opening and adapted to be rotatable within the central opening by the pivot member, the cam having an outer surface, wherein either the brake member inner surface or the cam outer surface has a depression and the other has a protuberance received by the depression to define a slidable position, where upon rotation of the cam causes the protuberance to be displaced out of the depression to radially bias the brake member through the side opening to define a locked position.