SAFETY KEY AND LOCKING CYLINDER, AND A LOCKING SYSTEM WITH SAID SAFETY KEYS AND LOCKING CYLINDERS

摘要

A safety key and locking cylinder (2), the locking cylinder (2) having a stator (3) and a rotor (24), with a front end and a rear end (4a, 4b) and a keyway (5) , and the safety key (1) having an upper and a lower surface (14) and a shank (6) which is provided with a plurality of control surfaces (7) for properly positioning tumblers and has a front end and a rear end (6a, 6b), wherein at its front end, the rotor (4) has at least one additional control surface, which interacts with an additional control surface (8), arranged at the rear end (6b) of the shank (6), wherein the additional control surface of the rotor is formed by a recess in the extended front end of the rotor, is characterized in that the recess (10) as an extension of the keyway (5) extends radially in relation to the axis of the rotor (4, 24) and is open at the front side of the rotor, wherein the additional control surface (9) of the key is formed by at least one recess (13) of reduced thickness on one shoulder (15) of the key (1,20).