Patent ID: 6692044
Filing Date: 2004-02-17
Classification: E05B,E05C,Y10S,Y10T

Abstract:
A lock for closures sliding in channels comprising a rectangular enclosure having first and second opposed ends, first, second, third and fourth wall members, said first and third wall members being opposed, parallel, and spaced apart, said second and fourth wall members being opposed, parallel and spaced apart, at right angles to and connecting said first and third wall members,a flange member operatively associated with and at right angles to said first wall member and projecting away from said rectangular enclosure, so said flange member can abut and be fastened to an inner surface of said closure, and said first wall member can abut an edge of said closure, a camshaft extending between said second and fourth wall members, parallel to said first and third wall members, having cylindrical ends journalled into said second wall member and said fourth wall member, and a cam journalled into a first end of a plunger means, said plunger means having a second serrated end projecting beyond a first end of said rectangular enclosure said camshaft when rotated moving said second serrated end of said plunger means between a first retracted position beyond said first end of said enclosure and a second extended position further beyond said first end of said enclosure, said serrated end of said plunger means being generally parallel to said channel, when touching said third wall, whereby when said flange is affixed to an inner surface of said closure, and said first wall abuts an edge of said closure, and said plunger means extends into a channel in which said closure slides, when said plunger means is in first retracted position said serrated second end does not engage a surface of said channel, when in second extended position said serrated second end frictionally engages a surface of said channel, and movement of said closure in the direction of the lock, rotates said second serrated end of said plunger means into tighter frictional engagement.