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    Shaft for light-weight golf clubs
    3.
    发明授权
    Shaft for light-weight golf clubs 有权
    用于轻型高尔夫球杆的轴

    公开(公告)号：US06905422B2

    公开(公告)日：2005-06-14

    申请号：US09193928

    申请日：1998-11-17

    申请人： Tetsuya Atsumi ,  Ikuo Takiguchi ,  Tsutomu Ibuki ,  Katsumi Anai

    发明人： Tetsuya Atsumi ,  Ikuo Takiguchi ,  Tsutomu Ibuki ,  Katsumi Anai

    IPC分类号： A63B53/10

    CPC分类号： A63B53/10 ,  A63B60/06 ,  A63B60/08 ,  A63B60/10 ,  A63B60/42 ,  A63B2060/0081 ,  A63B2209/02 ,  A63B2209/023

    摘要： A golf club shaft is 35-50 percent lighter than a conventional shaft while maintaining the outer diameter and structural characteristics of conventional shafts. The shaft has at least four layers of fiber reinforced material. The fiber reinforced layers are from innermost to outermost: a first angled layer; a first straight layer; a second angled layer; and a second straight layer. The angled layers are formed by bonding together two materials, each with fibers aligned in different directions. The second angled layer maintains the proper strength and rigidity of the shaft while keeping the shaft as light weight as possible. Aligning the second layer's fibers at an angle of 35-75 degrees with respect to the longitudinal direction of the shaft ensures proper weight and strength characteristics of the shaft. The resulting shaft is light-weight and exhibits the flexural rigidity, flexural strength, torsional rigidity, torsional strength, and crushing strength of conventional shafts.

    摘要翻译： 高尔夫球杆轴比常规轴轻35-50％，同时保持常规轴的外径和结构特性。 轴具有至少四层纤维增强材料。 纤维增强层从最内到最外层：第一成角度的层; 第一直层; 第二倾斜层; 和第二直线层。 成角度的层通过将两个材料结合在一起形成，每个材料具有在不同方向上对齐的纤维。 第二倾斜层保持轴的适当强度和刚度，同时保持轴尽可能轻的重量。 相对于轴的纵向以35-75度的角度对准第二层纤维确保轴的适当重量和强度特性。 所得到的轴重量轻，表现出传统轴的抗弯刚度，抗弯强度，扭转刚度，扭转强度和抗压强度。

    Shaft for light-weight golf clubs
    4.
    发明授权
    Shaft for light-weight golf clubs 有权
    用于轻型高尔夫球杆的轴

    公开(公告)号：US06767422B1

    公开(公告)日：2004-07-27

    申请号：US09473495

    申请日：1999-12-28

    申请人： Tetsuya Atsumi ,  Ikuo Takiguchi ,  Tsutomu Ibuki ,  Katsumi Anai

    发明人： Tetsuya Atsumi ,  Ikuo Takiguchi ,  Tsutomu Ibuki ,  Katsumi Anai

    IPC分类号： A63B5310

    CPC分类号： A63B53/10 ,  A63B60/06 ,  A63B60/08 ,  A63B60/10 ,  A63B60/42 ,  A63B2209/02 ,  A63B2209/023 ,  Y10T428/1352 ,  Y10T428/1362

    摘要： A golf club shaft is 35-50 percent lighter than a conventional shaft while maintaining the outer diameter and structural characteristics of conventional shafts. The shaft has at least four layers of fiber reinforced material. The fiber reinforced layers are from innermost to outermost: a first angled layer; a first straight layer; a second angled layer; and a second straight layer. The angled layers are formed by bonding together two materials, each with fibers aligned in different directions. The second angled layer maintains the proper strength and rigidity of the shaft while keeping the shaft as light weight as possible. Aligning the second layer's fibers at an angle of 35-75 degrees with respect to the longitudinal direction of the shaft ensures proper weight and strength characteristics of the shaft. The resulting shaft is light-weight and exhibits the flexural rigidity, flexural strength, torsional rigidity, torsional strength, and crushing strength of conventional shafts.

    摘要翻译： 高尔夫球杆轴比常规轴轻35-50％，同时保持常规轴的外径和结构特性。 轴具有至少四层纤维增强材料。 纤维增强层从最内到最外层：第一成角度的层; 第一直层; 第二倾斜层; 和第二直线层。 成角度的层通过将两个材料结合在一起形成，每个材料具有在不同方向上对齐的纤维。 第二倾斜层保持轴的适当强度和刚度，同时保持轴尽可能轻的重量。 相对于轴的纵向以35-75度的角度对准第二层纤维确保轴的适当重量和强度特性。 所得到的轴重量轻，表现出传统轴的抗弯刚度，抗弯强度，扭转刚度，扭转强度和抗压强度。

    Golf club shaft and method for manufacturing same
    5.
    发明授权
    Golf club shaft and method for manufacturing same 有权
    高尔夫球杆杆及其制造方法

    公开(公告)号：US06705954B2

    公开(公告)日：2004-03-16

    申请号：US09200097

    申请日：1998-11-25

    申请人： Ikuo Takiguchi ,  Tsutomu Ibuki ,  Tetsuya Atsumi

    发明人： Ikuo Takiguchi ,  Tsutomu Ibuki ,  Tetsuya Atsumi

    IPC分类号： A63B5310

    CPC分类号： A63B53/10 ,  A63B53/12 ,  A63B60/06 ,  A63B60/08 ,  A63B60/10 ,  A63B2060/0081 ,  A63B2209/02

    摘要： A golf club shaft having an optimal set of materials and sloped sections provides appropriately high rigidity, ease of use, and is inexpensive and easy to manufacture. A sloped section expands toward a grip end of the shaft. The sloped section has a slope gradient from 15/1000 to 35/1000 and a length from 200 to 350 mm. The outer diameter of the grip end is from 18 to 25 mm. On the side of the sloped section toward an end, there is formed a semi-sloped section with a slope gradient from 4/1000 to 13/1000. A kick point is formed at a position from 40% to 46% from the small-diameter end relative to the total shaft length. The number of required parts is small while production is simple. The shaft is light, has appropriate hardness, and high rigidity at the grip. Furthermore, the strength of the shaft is balanced and provides a good feel when hitting a ball. Production of the golf club shaft can be accomplished with standard materials such as fiber-reinforced resins. By wrapping a fiber-reinforced resin around a mandrel and rolling the material on a base which is heated to an optimal temperature, the strength and rigidity of the shaft can be optimized. Multiple layers can be overlaid to provide any desired strength and rigidity required. The rolled shaft is then heated to set the resin and produce a golf club shaft of optimal performance and reduced cost.

    摘要翻译： 具有最佳材料和倾斜部分的高尔夫球杆杆提供适当的高刚性，易于使用，并且便宜且易于制造。 倾斜部分朝向轴的握持端部扩展。 倾斜部分具有从15/1000至35/1000的斜率梯度，长度为200至350mm。 夹持端的外径为18至25mm。 在倾斜部分朝向一端的一侧，形成具有从4/1000至13/1000的斜率梯度的半倾斜部分。 在从小直径端相对于总轴长度的40％至46％的位置形成起点。 所需零件数量少，生产简单。 轴是轻的，具有适当的硬度，并在抓地力高刚性。 此外，轴的强度是平衡的，并且当击球时提供良好的感觉。 高尔夫球杆轴的生产可以用诸如纤维增强树脂的标准材料来实现。 通过将纤维增强树脂缠绕在心轴上并将材料滚动到加热到最佳温度的基底上，可以优化轴的强度和刚度。 可以叠加多层以提供任何所需的强度和刚度。 然后将轧制的轴加热以设置树脂并产生具有最佳性能并降低成本的高尔夫球杆杆。