Patent ID: 6565133
Filing Date: 2003-05-20
Classification: E05B,Y10S,Y10T

Abstract:
A pair of sweep locks and a corresponding pair of tilt latches mounted on an upper rail of a lower sash of a window, each of the sweep locks being pivotally lockable to a lock receiver mounted on a lower rail of an upper sash, and each of the tilt latches having a manually movable latch element that is latchable to a jamb of the window, the combination comprising:a. each sweep lock having a cam surface that moves between a locked and an unlocked position as the sweep lock rotates respectively between locked and unlocked positions; b. each sweep lock being mounted adjacent a respective one of the tilt latches so that the sweep lock cam surfaces in the locked positions are disposed to block unlatching movement of the respective latch elements; c. the sweep lock cam surfaces in the unlocked positions being disposed clear of the respective latch elements to permit manual unlatching of the tilt latches; and d. the sweep lock cam surfaces respectively engaging and moving unlatched latch elements into latched positions when the sweep locks move from unlocked to locked positions.