发明名称 Golf ball
摘要 A golf ball of the present invention has a plurality of dimples on its surface. The dimples accounting for not less than twenty percent of a total number of dimples have a double radius shape in which the curvature of the bottom wall portion and the curvature of the peripheral wall portions extending from the upper end of the bottom wall portion to the opening of the dimple are different from each other. The double radius shape is set so that the relationship between a diameter D1 at the opening of the dimple and a diameter D2 at the inflection point falls within 0.95>/=D2/D1>/=0.50 and the relationship between the depth F to the deepest point of the dimple and the depth C to the inflection point falls within 1.00>C/F>/=0.85.
申请公布号 US5735757(A) 申请公布日期 1998.04.07
申请号 US19960670494 申请日期 1996.06.27
申请人 SUMITOMO RUBBER INDUSTRIES, LTD. 发明人 MORIYAMA, KEIJI
分类号 A63B37/00;(IPC1-7):A63B37/14 主分类号 A63B37/00
代理机构 代理人
主权项
地址