KEY-OPERATED LOCKING DEVICE Russian patent published in 2005 - IPC

FIELD: electromechanical locking devices, particularly electric permutation locks and circuits therefore.

SUBSTANCE: locking device comprises a number of user devices including several user keys with electronic circuit. The electronic circuit includes electronic memory which is adapted to store changeable electronic coded key and several locks with electronic circuits adapted to store changeable electronic coded key. Lock and user key may cooperate only when identical coded keys are saved in memory thereof. The device also has at least one system component having electronic circuit with electronic memory adapted to store constant electronic coded key. Software is used to change changeable coded key of used device so that when identity verification procedure between lock or user key with changeable coded key and system component with saved coded key identical to above coded key of the lock or user key is successfully completed the first coded key is substituted for the second one.

EFFECT: increased security level.

12 cl, 8 dwg