发明名称 Bowling pin and manufacturing method of the same
摘要 The present invention provides a bowling pin which exhibits the excellent durability while satisfying conditions required on the bowling pin such as a weight and a dry sound which is generated at the time of hitting. A hollow portion which extends in the vertical direction is formed in a core material which constitutes a bowling pin. Upper and lower end portions of the hollow portion are opened, wherein one cap is fitted into an opening and another cap is fitted into a lower-side opening. The whole of the core material and the cap are almost covered with a surface skin portion and a portion of the core material where the surface skin portion is not provided is formed of two line portions and a dial portion. The surface skin portion is white, the line portions are red and the dial portion is black.
申请公布号 US7052406(B2) 申请公布日期 2006.05.30
申请号 US20030735859 申请日期 2003.12.16
申请人 HAMAMATSU KENMA CO., LTD. 发明人 SUZUKI NOBUFUMI
分类号 A63D9/00;B29C45/16;B29C65/56 主分类号 A63D9/00
代理机构 代理人
主权项
地址