High security locking system which forms a deviating picking path and associated deviated key

A high security locking system for use with tumbler pins, the locking system comprising:

• a deviated key;
• a lock housing, wherein the lock housing comprises an outer face, a housing bore extending axially inward from the outer face, and a plurality of first pin slots extending outward from the housing bore;
• a lock cylinder comprising a plurality second pin slots formed in the lock cylinder arranged to at least partially receive the tumbler pins therein;
• the lock cylinder being disposed within the housing bore of the lock housing such that a rotation of the lock cylinder within the housing bore of the lock housing is dependent upon a position of the tumbler pins within the second pins slots;
• an idler block disposed within the lock cylinder;
• the idler block including a keyway formed therein to extend inwardly from a keyhole at the outer face of the lock housing so as to be arranged to receive the deviated key inserted into the keyway;
• the idler block being rotatable with the deviated key relative to the lock cylinder from an entry position allowing insertion of the deviated key into the keyway and a pin position aligning the deviated key with one or more of the second pin slots in the lock cylinder;
• and
• at least one translating shield disposed within the idler block so as to be slidably movable relative to idler block between an open position in which the keyway and the keyhole are substantially unobstructed by the at least one translating shield to allow for insertion and removal of the deviated key relative to the keyway and a closed position in which the at least one translating shield protrudes at least partway into a path of at least one of the keyway and the keyhole without interfering with rotation of the deviated key with the idler block from the entry position to the pin position.