LOCK Russian patent published in 2000 - IPC

FIELD: locking devices. SUBSTANCE: the lock has a body accommodating levers, cross-bar in the form of a plate carrying a fixing arm coupled to the levers, and at least a single pin rigidly secured on the plate has secret cutouts for engagement with the bit of the key. Installed in the body is an additional plate for displacement together with the plate carrying the fixing arm at its extension at shutting-up of the lock and engageable with the locking arm; at least three levers are located between the additional plate and the plate carrying the fixing arm, and the clearance between the additional plate and the cross-bar pin end does not exceed 0.5 mm; both plates do not project in plan from the overall dimensions of the cross-bar pin. EFFECT: enhanced resistance to breaking in by squeezing-out or bending of the cross-bar or locking bolt. 2 cl, 1 dwg