METHOD FOR MANUFACTURE OF CROSS-BAR AND CROSS-BAR Russian patent published in 2003 - IPC

FIELD: locksmith's work, concerns the lock cross-bar, having a head and a tail-piece. SUBSTANCE: the head is made in the form of of separate power members with radial holes, and the tail-piece is made in the form of a U-shaped member with left-hand and right-hand guides and a catch, the power memebrs with the aid of the holes are kinematically linked with the left-hand guide and installed for displacement along the latter, one of the power members with the aid of the radial hole additionally kinematically communicates with the right-hand guide, and the catch is installed on the end section of the guide. EFFECT: enhanced resistance to burglary. 2 cl, 1 dwg