| 摘要 |
PROBLEM TO BE SOLVED: To provide a foreign discharge path which can achieve an environment ideal to the game balls. SOLUTION: The foreign matter discharge path has a plurality of bottomed rectification parts which are erected to be orthogonal to the direction of the downflow of the game balls with an interval equal to the diameter of the game balls to make the game balls flowing down align in several rows in the direction of its downflow and each have a partition plate with an inclined part at an angle of elevation in the direction of its downflow and a bottomless discharge gutter part which is made so slitted as to let the foreign matters other than the game balls drop while making the game balls flow down. The angle of elevation between the inclined parts adjacent to each other is made different from each other, a ball dispersion part erected almost vertical to the bottom part is formed at the top of the inclined part of at least one partition plate and the discharge gutter part is so built on the downstream side in the direction of the downflow of the game balls at the rectification parts as to equalize the direction of its downflow. COPYRIGHT: (C)2006,JPO&NCIPI
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