Patent ID: 8042843
Filing Date: 2011-10-25
Classification: E05B,Y10S,Y10T

Abstract:
1. A door lock comprising: a case adapted to be mounted in a door; a latch bolt movable between a retracted position inside the case and an extended position outside the case, with the latch bolt in the extended position being adapted to be received in a side frame of the door to lock the door lock, with the lock in the retracted position being disengaged from the side frame of the door to unlock the door; a retractor mounted in the case and operably connected to the latch bolt for moving the latch bolt from the extended position to the retracted position; a bracket adapted to be fixed to the door; a linking rod slideably mounted to the bracket and including a longitudinal axis and a first end, with the linking rod further including a second end spaced from the first end along the longitudinal axis and adapted to be operably connected to an operative member mounted to the door such that operation of the operative member causes movement of the linking rod along the longitudinal axis, with the linking rod further including a slot extending between the first and second ends of the linking rod along the longitudinal axis of the linking rod; a draw member including a first end pivotably connected to the bracket about a pivot axis and a second end operably connected to the retractor, with the draw member further including an intermediate portion between the first and second ends of the draw member, with the intermediate portion having a guide slot; a pin slideably extending through the slot of the linking rod and the guide slot of the draw member such that movement of the linking rod along the longitudinal axis causes pivotal movement of the draw member about the pivot axis, which in turn, causes movement of the retractor to move the latch bolt from the extended position to the retracted position; a follower coupled to the pin to move therewith; and an adjusting member in threading connection with the follower, with the adjusting member being rotatable to move the follower and the pin relative to the linking rod along the longitudinal axis and to move the pin along the guide slot, adjusting a position of the second end of the draw member relative to the retractor such that the latch is moved to the retracted position when the operative member is operated.