发明授权
- 专利标题: Multi-piece golf ball
- 专利标题(中): 多件高尔夫球
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申请号: US10318260申请日: 2002-12-13
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公开(公告)号: US07086970B2公开(公告)日: 2006-08-08
- 发明人: Junji Hayashi , Hisashi Yamagishi , Yasumasa Shimizu , Yasushi Ichikawa
- 申请人: Junji Hayashi , Hisashi Yamagishi , Yasumasa Shimizu , Yasushi Ichikawa
- 申请人地址: JP Tokyo
- 专利权人: Bridgestone Sports Co., Ltd.
- 当前专利权人: Bridgestone Sports Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2001-383188 20011217
- 主分类号: A63B37/04
- IPC分类号: A63B37/04 ; A63B37/06 ; A63B37/12
摘要:
A multi-piece golf ball includes a core 30–40 mm in diameter, an intermediate layer including an outermost layer 0.5–2.0 mm thick, and a cover 0.5–2.0 mm thick. The core is a rubber composition mainly containing polybutadiene. The outermost layer is a resin material containing an ionomer resin in an amount of 30% by weight or more. The cover material is obtained by dispersedly blending a silicone powder in a main resin containing an ionomer resin in an amount of 50% by weight or more. The hardness of the outermost layer is harder than the hardness of the core's a center portion. The hardness of the cover is harder than the hardness of the outermost layer. A difference in hardness between the cover and the center portion of the core satisfies a relation of 10≦(Durometer D hardness of cover−Durometer D hardness of center portion of core≦40.
公开/授权文献
- US20030114252A1 Multi-piece golf ball 公开/授权日:2003-06-19
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