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METHOD OF MANUFACTURING GAME BALL AND PINBALL GAME MACHINE USING GAME BALL MANUFACTURED BY THIS MANUFACTURING METHOD
METHOD OF MANUFACTURING GAME BALL AND PINBALL GAME MACHINE USING GAME BALL MANUFACTURED BY THIS MANUFACTURING METHOD
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机译：利用这种制造方法制造的游戏球制造游戏球的方法和弹球游戏机
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摘要
PROBLEM TO BE SOLVED: To provide a method of manufacturing game balls having random properties in the behavior thereof by eccentrically locating the center of gravitation in the game ball, and to provide a pinball game machine such as a Pachinko game machine using the game balls manufactured by the method.;SOLUTION: In the method of manufacturing the game balls 210, 220, the game balls 210, 220 are formed (for example, cold pressing step S3) by machining the steel bars as a raw material into balls. The steel bars are manufactured by mixing a material 212 different from a raw material into the same. The game balls 210, 220 manufactured using the manufacturing method are used in the pinball game machine such as the pachinko game machine 10.;COPYRIGHT: (C)2009,JPO&INPIT
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