| 摘要 |
PROBLEM TO BE SOLVED: To plan to properly shoot a ball from a ball shooting passage to a game region. SOLUTION: When the ball is shot pushing open a return ball preventing valve 25 from the ball shooting passage 18 to the game region 19 side, even if a ball which passes through a sub-preventing valve 31 prior to the ball and is shot to the game region 19 bounces from the game region 19 to the return ball preventing valve 25 side, and this bounced ball collides with the ball pushing open the return ball preventing valve 25 or with the return ball preventing valve 25, the ball pushing open the return ball preventing valve 25 is not taken in to the ball shooting passage 18 and is discharged to the game region 19 from a ball discharge space 32. By this, the inconvenience that the ball pushing open the return ball preventing valve 25 falls downward along the ball shooting passage 18 can be dissolved. COPYRIGHT: (C)2006,JPO&NCIPI
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