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    Golf club shaft
    3.
    发明授权
    Golf club shaft 有权
    高尔夫球杆杆

    公开(公告)号：US08961331B2

    公开(公告)日：2015-02-24

    申请号：US13905191

    申请日：2013-05-30

    Applicant: Dunlop Sports Co. Ltd.

    Inventor： Kazuyoshi Shiga ,  Yasuo Naito

    IPC: A63B53/10 ,  A63B59/00

    CPC classification number: A63B53/10 ,  A63B60/42 ,  A63B60/54 ,  A63B2209/023 ,  A63B2209/026 ,  A63B2225/02

    Abstract: A shaft 6 has a plurality of full length layers s2, s3, and s6 to s9. The full length layers have full length bias layers s2 and s3, and full length straight layers s6, s8, and s9. The full length straight layers s6, s8, s9 located outside the full length bias layers s2 and s3 include a novolac-containing layer. In the novolac-containing layer, a content Rn of the novolac type epoxy resin is 3% by mass or greater and 19% by mass or less. If an average specific gravity of the novolac-containing layers constituting the full length straight layers is defined as S1, and an average specific gravity of the full length bias layers and inside of the full length bias layers is defined as S2, the specific gravity S1 is greater than the specific gravity S2.

    Abstract translation: 轴6具有多个全长层s2，s3，s6〜s9。 全长层具有全长偏压层s2和s3，以及全长直层s6，s8和s9。 位于全长偏压层s2和s3外的全长直层s6，s8，s9包括含酚醛清漆层。 在含酚醛清漆层中，酚醛清漆型环氧树脂的含量Rn为3质量％以上且19质量％以下。 如果将构成全长直线层的含酚醛清漆层的平均比重定义为S1，将全长偏置层和全长偏置层内部的平均比重定义为S2，则比重S1 大于比重S2。

    Tubular body made of fiber-reinforced epoxy resin material
    4.
    发明授权
    Tubular body made of fiber-reinforced epoxy resin material 有权
    管体采用纤维增强环氧树脂材料制成

    公开(公告)号：US08858358B2

    公开(公告)日：2014-10-14

    申请号：US13729327

    申请日：2012-12-28

    Applicant: Dunlop Sports Co., Ltd.

    Inventor： Kazuyoshi Shiga ,  Yasuo Naito

    IPC: A63B53/10

    CPC classification number: A63B53/10 ,  A01K87/00 ,  A63B49/10 ,  A63B2209/02 ,  B29L2023/22 ,  B29L2031/5227 ,  C08J5/042 ,  C08J5/24 ,  C08J2363/02 ,  C08J2363/04 ,  C08J2429/14 ,  Y10T428/1369 ,  Y10T428/139 ,  Y10T428/1397

    Abstract: It is an object to provide a tubular body made from a novel fiber-reinforced epoxy resin material having improved strength. A tubular body made of a fiber-reinforced epoxy resin material according to the present invention is a tubular body made of a fiber-reinforced epoxy resin material comprising a cured product of an epoxy resin composition and a reinforcing fiber. The cured product of the epoxy resin composition has a swelling ratio of 20% by mass to 42.5% by mass in methyl ethyl ketone.

    Abstract translation: 本发明的目的是提供一种由具有改进的强度的新型纤维增强环氧树脂材料制成的管状体。 根据本发明的由纤维增强环氧树脂材料制成的管状体是由包含环氧树脂组合物和增强纤维的固化产物的纤维增强环氧树脂材料制成的管状体。 环氧树脂组合物的固化物在甲基乙基酮中的溶胀比为20质量％〜42.5质量％。

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