DOOR LOCK Russian patent published in 2001 - IPC

FIELD: locksmith's work. SUBSTANCE: door lock has a body, cylindrical secrecy mechanism mounted on the body, drive member coupled to the revolving cylinder of the secrecy mechanism, cross-bar engageable with the drive member and installed for rectilinear-translation withdrawal from the body, and a handle for lock locking- unlocking on the inside of the room. The revolving cylinder of the secrecy mechanism is made for unidirectional rotation, the drive member is made as a crank, whose radius equals half the cross-bar working stroke, the cross-bar is provided with a dowel installed on it for movement perpendicularly to the working travel of the cross-bar, and with a restrictor, of the length of dowel working motion relative to the cross-bar by a value equal to the crank radius, providing for engagement of the dowel with the crank tenon in the process of lock locking by the cylindrical mechanism, and the handle for lock locking-unlocking on the inside of the room is kinematically linked with the dowel. EFFECT: enhanced stability to breaking open. 4 cl, 15 dwg