| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a security key which is retroactively compatible and affords a high degree of forgery protection. <P>SOLUTION: A locking system is constituted so that at least one rotor control surface arranged at an end of a front side of a rotor is provided at the end of a rear side of a shaft, the system is engaged with a second shaft control surface which is recessed from an upper and/or lower surface of the shaft, protrusions protruding to cross a surface of the shaft are fixed to the end of the rear side of the shaft and engaged with a first recessed part corresponding to the front side of the rotor, the first recessed part has a side surface perpendicular to a side surface of a key groove, each protrusion of a plurality of the security keys has a different dimension and shape in order to increase the number of locking embodiments, and the rotor control surface of the rotor is formed of the second recessed part having a different length or formed at a different position corresponding to the different shape and, dimension of the second shaft control surface formed at a rear end of the shaft. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
