LOCK Russian patent published in 1997 - IPC

FIELD: guarding equipment, in particular, locking devices which may be used in encoder systems. SUBSTANCE: lock has body, cross bar, cross bar control member, rotation member in control circuit, retainer and retainer control member. Cross bar control member has shaft, whose one end is positioned outside the door and other end may directly or through kinematic circuit cooperate with rotation member. Shaft or kinematic circuit member and rotation member are positioned so as to define friction pair between them. Retainer and retainer control member are attached to door inner surface for cooperation of retainer with control circuit member or cross bar and fixing cross bar in closed position of lock. Construction of lock eliminates possibility of selecting key or breakage of key well. EFFECT: increased efficiency, enhanced reliability in blocking and wider operational capabilities. 4 cl, 4 dwg