发明名称 |
Golf balls |
摘要 |
A two or three piece golf ball in which a boundary surface between concentric solid layers has a projection formed on the surface of a concentric solid layer having a high hardness such that the projection extends along an approximate normal direction, a depression corresponding to the projection is formed in the surface of a concentric solid layer having a low hardness, and the concentric solid layer having a high hardness and the concentric solid layer having a low hardness are joined together such that the projection is inserted into the depression. A golf ball comprising a two-layer solid core is composed of a low-hardness inner core and a high-hardness outer core joined around the low-hardness inner core. A projection is formed on the inner surface of the high-hardness outer core such that the projection extends along an approximate normal direction, while a depression corresponding to the projection is formed in the outer surface of the low-hardness inner core, and the low-hardness inner core and the high-hardness outer core are joined together such that the projection is inserted into the depression. |
申请公布号 |
US5836834(A) |
申请公布日期 |
1998.11.17 |
申请号 |
US19970847582 |
申请日期 |
1997.04.24 |
申请人 |
BRIDGESTONE SPORTS CO., LTD. |
发明人 |
MASUTANI, YUTAKA;IHARA, KEISUKE;SHIMOSAKA, HIROTAKA;INOUE, MICHIO;KASASIMA, ATUKI |
分类号 |
A63B37/00;A63B37/02;A63B37/12;A63B45/00;(IPC1-7):A63B37/12;A63B37/06 |
主分类号 |
A63B37/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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