Patent ID: 6604393
Filing Date: 2003-08-12
Classification: E05B,E05C,Y10T

Abstract:
A key operated lock actuating system comprising:a housing; a lock cylinder that is pivotable relative to the housing around a first axis; an actuator assembly that is pivotable around the first axis between a fully locked position and an unlocked position; a first key having a first configuration; a second key having a second configuration, the lock cylinder comprising a keyway into which each of the first and second keys can be directed with the lock cylinder pivoted relative to the housing into a key removal position, the lock cylinder comprising a repositionable element which is changed from a first position into a second position as an incident of the second key being directed into the keyway, the lock cylinder configured so that direction of the first key into the keyway does not place the repositionable element into the second position; a first surface on the lock cylinder and a second surface on the actuator assembly which cooperate to allow the first surface to act against and pivot the actuator assembly in one direction around the first axis as the key cylinder is pivoted from the key removal position in the one direction to thereby move the actuator assembly from the unlocked position toward the locked position; the lock cylinder having third surface and the actuator assembly having a fourth surface which cooperate with the repositionable element in the second position and not in the first position to allow the third surface to act against the fourth surface as the lock cylinder is pivoted oppositely to the one direction to thereby move the actuator assembly toward the key removal position; the lock cylinder being pivotable with the first key directed into the keyway with the lock cylinder in the key removal position and the actuator assembly in the unlocked position in the one direction around the first axis sufficiently to cause the first surface to act against and move the second surface that the actuator assembly is placed in the fully locked position and being thereafter pivotable oppositely to the one direction around the first axis to place the lock cylinder in the key removal position without changing the actuator assembly from the fully locked position, the lock cylinder being pivotable with the second key directed into the keyway with the lock cylinder in the key removal position and the actuator assembly in the unlocked position in the one direction around the first axis sufficiently to cause the first surface to act against and move the second surface so that the actuator assembly is placed in the fully locked position and being ther after pivotable oppositely to the one direction around the first axis which causes the third surface to act against the fourth surface to thereby move the actuator assembly from the fully locked position to an intermediate position between the fully locked and unlocked positions as the actuator assembly is moved into the key removal position.