MECHANISM FOR UNLATCHING CROSS-BAR OF A LOCK Russian patent published in 1995 - IPC

FIELD: locking of rooms and safes. SUBSTANCE: mechanism has a flat key with coded holes and metal housing fastened to load-carrying structure of door frame; the housing has a hole for key. A group of parallel rods is mounted in the housing; the rods are disposed in shell in transverse to hole and connected with cross-bar. Tie of rods and cross-bar is made in form of magneto-controlled spring-loaded rod which is lowered into lateral groove of the cross-bar, rod electromagnet electron control unit and electric circuit which reads code of the key out. Rods of the housing are made in form of magnets and are fastened to material of the housing through permanent magnet to form reading-out unit together with housing of mechanical part. Electric circuit of of the reading-out unit is disposed onto the housing at the side of the hole; the side is opposite to side of rods opposition. The electric circuit is composed in sequence from high-sensitive members disposed in opposite to magnetic rods. Key is provided with its own magnets disposed inside holes of the key; the holes are made for placing in align with rods. Mechanism is made for placing onto door frame of flap to be open. EFFECT: improved safety; improved reliability of operation. 3 cl, 5 dwg