BLOCKING UNIT Russian patent published in 1997 - IPC

FIELD: cross-bar locks. SUBSTANCE: invention is related to cross-bar locks with several keys, one of them controls crossbar, the other one - device blocking movement of cross-bar. Unit blocking movement of cross-bar has spring-loaded blocking lever, key rotary member which axis is parallel to axis of lever and lever drive ensuring its unmeshing from cross-bar located in body. Axle of blocking lever is mounted in body and drive of lever is fabricated in the form of pusher made fast to nut coupled to key rotary member for movement along lead screw parallel to axis of lever. Connection of nut with key rotary member (for instance, with core of cylindrical mechanism) can be realized by various methods. EFFECT: enhanced secrecy of lock and its improved operational handling. 3 cl, 6 dwg