Patent ID: 6746060
Filing Date: 2004-06-08
Classification: E05B,Y10S,Y10T

Abstract:
A bored-in latch assembly for a panic touch bar exit device having a latchbolt inserted within a latch tube, the latchbolt engaging a strike, a face plate integral to an end of the latch tube that is proximate to the strike, a scalp joined to the face plate, the latchbolt moves through the latch tube and enters the strike, a touch bar activator that is connected to the latchbolt and retracts the latchbolt from the strike the improvement comprising:(a) a latchbolt having a first bevel means for automatically retracting the latchbolt, when in use the door having the latchbolt swings from an open position towards a closed position with respect to a frame having the strike so that the first bevel means contacts the strike; (b) a second bevel means for: (i) reducing a load on the latchbolt by aiding the touch bar activator in retracting the latchbolt from the strike when used in a door when force is applied to the door in a closed position, thereby allowing the door to move to an open position when force is applied to the door and the touch bar activator is depressed; and (ii) keeping the latchbolt in the strike when the touch bar activator is not depressed, thereby when in use on a door keeping the door in a closed position when force is applied to the door and the touch bar activator is not depressed, the second bevel means being on a substantially opposite side from said first bevel means; and (c) the latch tube having a bearing surface structure on the same side as the first bevel means which prevents any edge of the face plate and scalp from contacting the latchbolt on a latchbolt side which has the first bevel means.