Patent ID: 7007524

Claim:
A dead bolt lock system for use on a door leading to a secure area, the lock system comprising: housing structure adapted to be mounted on an inside of the door; a dead bolt mounted in the housing structure for movement between extended and retracted positions; a lock coupled with the dead bolt and controlled by the input of correct unlocking information to allow movement of the dead bolt from the extended position to the retracted position; dead bolt retracting structure operatively connected to the dead bolt such that when the lock is unlocked, at least a portion of the retracting structure is operative to allow retraction of the dead bolt and, when the lock is locked, operation of the dead bolt retracting structure is prevented thereby preventing retraction of the dead bolt; an escape lever including a movable arm operatively connected to the dead bolt to retract the dead bolt when the lock is in the locked condition and when the lock is in the unlocked condition, the escape lever extending generally from the housing structure and being operable with at least one of a pushing motion in a first direction or a pulling motion in a second direction to retract the dead bolt; and an inertia member mounted to move into a position which prevents movement of the arm and thereby prevents inertial operation of the escape lever in the first direction and in the second direction upon impact of the lock system by an outside force.