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Multi-piece golf ball 发明授权

2023-06-05 2030 662K 0

专利信息

申请日期 2025-07-19 申请号 US10945932
公开(公告)号 US7037216B2 公开(公告)日 2006-05-02
公开国别 US 申请人省市代码 全国
申请人 Junji Hayashi; Hiroyuki Nagasawa; Hideo Watanabe
简介 Disclosed herein is a multi-piece golf ball composed of a core and an outermost cover layer, with one or more inner cover layers interposed between them, which is characterized in that the core is made mainly of a polybutadiene which is synthesized with using a catalyst of rare earth element such that the content of cis-1, 4 bond is no less than 60%, the core has a diameter of 34.7 to 40.7 mm, the core undergoes deflection amounting to 3.0 to 5.0 mm under a load of 100 kg, the outermost cover layer is formed mainly of a thermoplastic resin or elastomer compounded with organic short fibers, the outermost cover layer has a Shore D hardness of 55 to 70 and a thickness of 0.5 to 2.0 mm, and the inner cover layer has a Shore D hardness of 15 to 55 and a thickness of 0.5 to 2.0 mm. The multi-piece golf ball exhibits good flying performance and crack durability. In addition, it gives the player a good striking feel at the time of putting and driver shot.


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