Closure system has cylinder, flat key, stator and rotor, tumbler pins, cylindrical protuberance, conical head, key shaft seating, and tensioning spring

摘要

The closure system has a closing cylinder and a flat key. The closing cylinder has a stator (4) in which turns a rotor (5) with a key-duct. The stator and rotor have tumbler pins (81,91). The rotor's first movable tumbler pin (6) aligned with a first tumbler pin of the stator has, at its front end, a coaxial cylindrical protuberance (66). The protruding end has a smooth end surface (661) which cooperates with the tip of a conical head (21) of a movable element held in a seating (32) of the key shaft (3). The shaft has two narrow and two main surfaces. At least one of the main surfaces contains active recesses forming the combination relating to the conical head (75) of the second movable pins (7) aligned with the stator's movable tumbler pins (91) pre-tensioned by a spring (92).