METHOD FOR LOCK UNLOCKING AND LOCK THAT REALISES THIS METHOD Russian patent published in 2010 - IPC E05B25/02 

FIELD: construction.

SUBSTANCE: method for unlocking of lock consists in the fact that changing levels from initial position into working one, which complies with the lock code, ends with fixation of levels in specified working position, at the same time changing levels into working position and fixation of levels in this position is executed in a certain angular sector of key turn under conditions of mechanical blocking of latch motion, and latch unlocking and its displacement is carried out in another angle sector of key rotation, where access to levels is closed. To execute these operations, locks comprises mechanisms of displacement and mechanical blocking of latch and installation of levels into initial position, and also protective screen that closes access to levels from outside in certain angle sectors of key rotation.

EFFECT: improved resistance of locks to criminal opening performed by non-destructive check methods.

7 cl, 21 dwg