METHOD TO LOCK AND UNLOCK LOCK AND LOCK FOR ITS REALISATION (VERSIONS) Russian patent published in 2013 - IPC E05B25/02 

FIELD: construction.

SUBSTANCE: by rotating a key, a control bushing is rotated, and when the key is turned by the angle sufficient to put code level tumblers into the working position, the control level tumblers are moved by rotation of the control bushing, unlocking the fixator of the level tumblers, which is moved into the fixing teeth of the code level tumblers, and the possibility of their movement is blocked. In the body there is also an additional mechanism for synchronisation of lock parts operation and locking of a bolt, which comprises a fixator of code level tumblers, a stop, at least one control level tumbler and a control bushing, which is installed as capable of rotation relative to the axis of the key in slots of the front and rear walls of the body with a slot for placement of the key, with a driving tooth and figured cams.

EFFECT: higher resistance of a lock to locking and unlocking in case of criminal break-in by nondestructive methods.

9 cl, 8 dwg