Cylinder lock system and set of keys

摘要

A cylinder lock (1) provided with a thick key (2a; 42a) including an elongated base (27; 57) having two surfaces. A serrated wall (28; 58) extends from one surface of the base. A key groove (22; 52) is formed by the serrated wall. A rib (26; 56) is formed on the other surface of the base. The cylinder lock is further provided with a rotatable rotor (4) including a keyway (3) into which the thick key is inserted. A first cavity (31; 71) is formed in the keyway and shaped to enable insertion of the base of the thick key. A second cavity (32; 72) is formed in the keyway and shaped to enable insertion of the serrated wall of the thick key. A third cavity (33; 73) is formed in the keyway and shaped to enable insertion of the rib of the thick key. The keyway enables insertion of a thin key in lieu of the thick key.