DOOR LOCK Russian patent published in 2002 - IPC

FIELD: locksmith's work. SUBSTANCE: installed in the door lock casing are a cross-bar, spring- loaded bolt linked with the cross-bar, cylinder mechanism, carrier engageable with the bolt and installed coaxially with the core of the cylinder mechanism, and a single-ward key. In addition, it is provided with the second single- ward key, whose working section equals the length of the cylinder mechanism casing, separating partitions installed in the upper part of the casing between the cross-bar and the bolt, the cross-bar and the casing wall, closing post located between the partitions over the cylinder mechanism, the core of the cylinder mechanism consists of two equal parts, and the middle part of the cylinder mechanism casing is made in the form of an annular rotary drum with a carrier having coaxial shaped grooves and connected to one of the core parts, and the cross-bar consists of a T-shaped cross-bar clamp with a central longitudinal groove for engagement with the closing post and four closing members, one part of the shorter side of the cross-bar clamp is inclined and the other has a rounded-off cut-out. EFFECT: enhanced resistance to breaking. 8 dwg