LOCK CYLINDER MECHANISM Russian patent published in 1997 - IPC

FIELD: locks. SUBSTANCE: lock cylinder mechanism has body with cylindrical hole and three rows of radial holes located at right angle to one another and having spring-loaded locking-pins. Planes of radial holes intersect on the axis of cylindrical hole. Located in cylindrical hole for turning is sleeve with a row of holes which are coaxial to body holes accommodating pushers and having central hole for key. Key is made in form of rod with code cutouts on three ribs for interaction with pushers. The central hole has four longitudinal in axial direction through recesses for key ribs. Key has the fourth stop rib whose thickness exceeds that of three other ribs. Rigidly installed in longitudinal recess for reinstallation is stop pin for interaction with stop rib. In this case, located in the plane of the first radial holes on the side of insertion of the key into mechanism and between the last holes in the sleeve are protective pins made of high-strength material. EFFECT: higher efficiency. 6 dwg