发明名称 |
Wound golf ball |
摘要 |
A wound golf ball in which a wound core consisting of a solid center and a thread rubber layer is enclosed with a cover has a surface hardness of 70-85 on JIS C hardness scale, and presents a contact area of 3.5-4.1 cm2 with the club face of No. 9 iron driven at a head speed of 35 m/s. The ball is improved in control and distance in that it receives a more spin rate upon approach shots, but a less spin rate upon driver shots. |
申请公布号 |
US6238305(B1) |
申请公布日期 |
2001.05.29 |
申请号 |
US19980163910 |
申请日期 |
1998.10.01 |
申请人 |
BRIDGESTONE SPORTS CO., LTD. |
发明人 |
UMEZAWA JUNJI;KAKIUCHI SHINICHI |
分类号 |
A63B37/00;A63B37/04;(IPC1-7):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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