A process for the preparation of a key, a key blank and a key series

摘要

The invention relates to a method as well as to a corresponding key blank and series key for making a key of a disc tumbler cylinder lock, in which method the key is cut to have lock-model-specific standard angle notches corresponding to tumbler discs of the lock. According to the invention, a shape (3) is made on the key for rotating, when the key is turned in the lock, the tumbler disc of the lock to a position that differs from its lock-model-specific standard rotation angles for multiplying the variations of the lock.