发明授权
- 专利标题: Shaft for golf club
- 专利标题(中): 高尔夫球杆
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申请号: US12348407申请日: 2009-01-05
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公开(公告)号: US07967698B2公开(公告)日: 2011-06-28
- 发明人: Masatoshi Kato
- 申请人: Masatoshi Kato
- 申请人地址: JP Kobe
- 专利权人: SRI Sports Limited
- 当前专利权人: SRI Sports Limited
- 当前专利权人地址: JP Kobe
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2008-107371 20080417
- 主分类号: A63B53/10
- IPC分类号: A63B53/10
摘要:
A shaft according to the present invention is obtained by winding and curing a prepreg sheet having a matrix resin and a fiber. The prepreg sheet includes a full-length sheet and a partial sheet. At least a part of the partial sheet forms a tip bias layer disposed in a tip portion of the shaft. A fiber of the first tip bias layer is oriented at an angle which is equal to or greater than 25 degrees and is equal to or smaller than 65 degrees with respect to an axis of the shaft. A fiber of the second tip bias layer is oriented at an angle which is equal to or greater than −65 degrees and is equal to or smaller than −25 degrees with respect to the axis of the shaft. The shaft is obtained by winding a tip bias stuck body (V1) fabricated by sticking a first tip bias sheet (a8) and a second tip bias sheet (a9) together.
公开/授权文献
- US20090264216A1 SHAFT FOR GOLF CLUB 公开/授权日:2009-10-22
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