CODE LATCH Russian patent published in 2003 - IPC

FIELD: locksmith's work. SUBSTANCE: the code latch has a locking bolt, stepped bush with a flange accommodating a stopper with an annular groove or a segment slot positioned in its axial hole on the opposite end provided with a nut, longitudinal opposite positioned groove and slot and a cross-slot for the lock pin, having notches and marks punched on its plane on the periphery, shaped hole and a hole for the lock pin rigidly connected to the lock disk, a stack of code composite disks with spacers and protective components against an axial access to the stack of the code disks are made on the outer surface of the stepped bush. The locking bolt is moved by the latch rigidly coupled to it, the coupling is locked by a stopper in the extreme positions through the holes made in it and positioned in the groove of the thrust washer fitted on the stepped bush against the stop in its flange, provision is made for threaded holes for the fastening joints for installation of the latch on the door, compression of the stack of the code disks with spacers and prevention of an axial access to them is accomplished by a nut, retaining of which at locking of the latch is provided by a stopper, whose lower end for this purpose is made with a diameter exceeding the threaded hole of the nut and partially enters its groove. EFFECT: enhanced resistance to breaking in. 3 dwg