公开(公告)号：US4116439A

公开(公告)日：1978-09-26

申请号：US728498

申请日：1976-09-30

申请人： Robert James Chavarria ,  Clark Berg Foster

发明人： Robert James Chavarria ,  Clark Berg Foster

IPC分类号： A63B37/00 ,  B29C70/70 ,  A63B37/04 ,  A63B37/12

CPC分类号： A63B37/00 ,  B29C70/70 ,  A63B2243/002 ,  B29L2031/54

摘要： A transparent game ball particularly useful as a billiard or pool ball is disclosed, along with manufacturing processes and apparatus for producing the ball. The ball includes a weighted opaque object centered within the transparent spherical outer covering of the ball for providing the required weight for the ball as well as a desirable appearance. The transparent portion of the ball is produced bubble free of polyester resin through the use of a special, two-piece mold for forming the entire ball at one time. Into this two-piece mold a centering spider or disk of the same rigid polyester resin is inserted. The spider or disk may be either transparent or opaque, and is used to precisely center the opaque weighted object at the ball's geometric center.

摘要翻译： 公开了一种特别用作台球或池球的透明游戏球，以及用于制造球的制造工艺和设备。 球包括以球的透明球形外覆盖物为中心的加权不透明物体，用于为球提供所需的重量以及期望的外观。 球的透明部分通过使用特殊的两件式的模具一次形成整个球体而产生无聚酯树脂的气泡。 插入这个两件式的模具中，插入相同刚性聚酯树脂的定中心或圆盘。 蜘蛛或盘可以是透明的或不透明的，并且用于将不透明加权物体精确地对准在球的几何中心处。