| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for varying the rolling down of game balls further improved in game performance by enabling them to rotate in various ways and adding artificial movement to natural one in guiding and distributing them. SOLUTION: The device 20 for varying the rolling down of game balls comprises a rotating plate 24 rotating on a game board, a pair of open/close vanes 27 and 28 pivoted thereon and an opening controller 37 for controlling the open/close vanes at predetermined openings. The open/close vanes 27 and 28 are opened or closed by the rotation of the rotating plate 24. The open/close vanes 27 and 28 are pivoted on the rotating plate 24 at positions 29 and 30 inside the centers of gravity of the vanes, respectively. In addition, the rotating plate is alternately changed in a rotating direction. COPYRIGHT: (C)2005,JPO&NCIPI
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