COMBINATION LOCK Russian patent published in 1995 - IPC

FIELD: safe locking. SUBSTANCE: lock has code mechanism, body, pivot with a set of code disks installed on it, knob, fastener, blocking mechanism and control aid. The disks have slots on their surface for blocking mean in the form of a ball. The body in code mechanism is immovable, and may be oriented in vertical direction. Internal surface of the body is conical and provided with grooves located diametrically in vertical surface along cone generatrix. One slot is used as guide, and the other as return one. The grooves are connected to blocking mean being controlled by the knob installed in the above body. Fitting diameter of the knob has six positioned ball-type stopper and shaped pocket with lengthwise slot. Hexahedral axle with conical code disks with traps in the form of close slots installed. The slots and divided disks are alternative. The disks has passes in the form of open slots for blocking mean. The last disk is made in the form of drive semi-sleeve clamping disks on hexahedral axle with a clamping device. A driven semi-sleeve is coaxial to drive semi-sleeve. The driven one has two-positioned ball-type stopper. The sleeve through carrier member is linked to the cam of blocking mechanism to block lock fastener. Both semi- sleeves are interconnected through common cross slot and blocking mean. The lock is provided with a protective mechanism, which generates noise. Protective mechanism generating noise is made in the form of blind openings. The openings are of radial and directed at different angles, for example four openings directed at 130 60 110 60 degrees. Code mechanism has a mechanism for protection against discovering. The mechanism is located on vertical plane. Annular groove is made on back body end. This groove is communicated to return groove. Through opening is made in the area of guide groove. The opening is parallel to body axis and is connected to annular groove. Shaped pocket of the code mechanism has left and right cross slots and a cap. One can reinstall the cap into one cross slot. EFFECT: high reliability. 4 cl, 7 dwg