Lock/key system

摘要

The invention relates to a lock/key system, especially for locking systems. In order to make the unauthorised production of a key more difficult and to make the production process more economical, the profile indentations (12) of the invariant basic profile (7) assigned to the region of the key breast carrying the classifying notches, have a rectangular cross-section in the same way as the variation and system profile (8) which is shifted into the portion adjoining the key spine. Moreover, the variation and system profile (8) has at least one blocking-rib profile (11) projecting beyond the key side faces. <IMAGE>