HIGH-SECURITY LOCK Russian patent published in 2000 - IPC

FIELD: locking devices. SUBSTANCE: the high-security lock has a body with a key guide, crossbar clamp with crossbars and closing stem, crossbar blocking device comprising a set of spring-loaded levers with code bosses made of two groups with various combinations in height, formed by gaps for engagement with the closing stem, and a two-ward key. It has two additional stems, one of which is square-shaped with two rows of symmetrically located slots for the spring-loaded levers, it is located perpendicularly to the body and rigidly attached to it, the other is located in the same horizontal axis with the closing stem, on the crossbar clamp on the side of the crossbar for orientation of the levers relative to the body, and the crossbar clamp on the side of the key guide is made in the form of a rack with holes, a set of levers installed on the other side of the crossbar clamp symmetrically to the main set, both sets of levers are installed for unidirectional movement, and each lever is made in the form of a T-shaped plate, whose upper part on one side is provided with perpendicularly arranged square boss and rectangular stepped rod, the latter is positioned above the code boss, and the lower part has a shaped profile; the square boss and the boss near the T-shaped plate are provided with guide grooves for movement of the levers, and each stepped rod of the levers is shifted relative to the other by one levers is shifted relative to the other by one code boss; the lower step of the extreme rods of the levers has an opposite- directed deflection and bulges on their inner surfaces; the closing stem is provided with metal balls press in on two sides, and the levers are spring-loaded with the aid of coil springs. EFFECT: enhanced resistance to burglary. 9 dwg