CODED MAGNET-MECHANICAL LOCK Russian patent published in 1998 - IPC

FIELD: locking devices. SUBSTANCE: lock has body in which axially located are turning holder with blind holes, spring-loaded matrix installed in holder for possible longitudinal displacement, locking rods, locking member, socket key with recesses in which installed are orienting magnets for control of location of passive coding members. Aforesaid key has kinematic connection with end surface of holder. Lock is provided with interacting power magnets, and one of them is fastened on matrix and other on key. Made in body are annular bore and slots. Socket key has protrusions corresponding to body slots for tight pressing against holder and ensuring combined rotation with it and annular groove. Recesses of socket key are made so that orienting magnets can be repositioned in them. Power magnets in matrix and socket key are integral with corresponding magnetic circuits for localization of induction flows. All locking rods are straight, spring-loaded and installed separately for possible longitudinal displacement in bushes rigidly connected by their ends with matrix. At least one of through-holes is eccentric to shells fixed in blind holes of holder. They together form cylindrical spaces each holding at least one magnet sensitive ball commensurable with ends of locking rods and easily moving in it. EFFECT: high efficiency. 3 dwg