| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a game machine for preventing fraudulence that uses game balls with wire rods attached. <P>SOLUTION: A projection is projectively formed in a path of game balls from the direction crossing a path and bends tracks of game balls passing through the path. A detection part detects game balls passing through the tracks bent by the projection part in the tracks. The projection is formed from an end to a tip of the projection along a direction in which the game balls pass the tracks, and at least one groove which vertically goes through the inside of the projection at narrower intervals than a diameter of the game ball is formed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
