Patent ID: 8360482
Filing Date: 2013-01-29
Classification: E05B,E05C,Y10T

Abstract:
1. A dead bolt adjustable between one of two backset positions, comprising: a bolt movable between one position for bolting a door and another position for unbolting the door; a latch operator for moving the bolt, said latch operator comprising a front section which engages said bolt to move said bolt, and a rear section that moves the latch operator for moving said bolt, a latch drive mechanism cooperating with said rear section of the latch operator to move said bolt; a pair of frames for mounting the latch operator; an inside operator and an outside operator each operatively associated with said latch drive to provide means for manually moving said latch drive to move said bolt, an adjustment means including a casing surrounding said bolt and through which the bolt moves between said positions, said casing having a slot formed therein and which corresponds to the distance between the backset positions for the bolt, said adjustment means further includes a slot formed in the front section of the latch operator the length of which corresponds to the distance, between the backset positions, a pin provided through said slot in said front section of the latch operator that also extends through the bolt to adjust the length of the backset for the dead bolt, said adjustment means including a spring interposed between the bolt and latch operator for moving the bolt between one of the backset positions and to set the latch in a desired backset position, one of said frames having a projection that extends into said casing slot; and said casing having a tab, said tab extending within said frames and fitting behind the bolt to provide limits to the movement of said bolt when adjusted for backset, and a leaf spring biasing the latch drive into engagement with the rear section of the latch operator to maintain its connection when either the inside operator or the outside operator for the door are actuated for engagement or disengagement of the dead bolt during its operations.