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    Iron golf club and golf club set with variable weight distribution
    3.
    发明授权
    Iron golf club and golf club set with variable weight distribution 有权
    铁质高尔夫球杆和高尔夫球杆，配有可变重量分配

    公开(公告)号：US07022028B2

    公开(公告)日：2006-04-04

    申请号：US10903245

    申请日：2004-07-31

    申请人： Masao Nagai ,  David G. Llewellyn ,  Harry B. Taylor ,  Mamoru Saraie ,  Isamu Toshinari

    发明人： Masao Nagai ,  David G. Llewellyn ,  Harry B. Taylor ,  Mamoru Saraie ,  Isamu Toshinari

    IPC分类号： A63B53/04

    CPC分类号： A63B53/04 ,  A63B53/047 ,  A63B60/00 ,  A63B2053/005 ,  A63B2053/0408 ,  A63B2053/0433 ,  A63B2053/0458 ,  A63B2053/0491

    摘要： An iron golf club and a set of iron golf clubs that have a variable weight distribution. Each iron golf club head has a cavity and a raised wall portion that extends upward from the sole and offset from the cavity. The raised wall portion is separated from the cavity by a groove set at an oblique angle to the face portion of the iron golf club The groove deepens the center of mass depth and lengthens the effective face length of the iron golf club. The width of the groove may vary between each golf club in a set of iron golf clubs, such that the width of the groove of the long irons is greater that the width of the groove of the middle irons, and the width of the groove of the middle irons is greater than the width of the groove of the short irons.

    摘要翻译： 一个铁质高尔夫球杆和一套具有可变重量分布的铁质高尔夫球杆。 每个铁高尔夫球杆头具有一个空腔和一个从鞋底向上延伸并从腔体偏移的凸起壁部分。 凸起壁部分通过与铁高尔夫球杆的面部倾斜设置的凹槽与空腔分离。凹槽加深了质心深度的深度并且延长了铁高尔夫球杆的有效面长度。 槽的宽度可以在一组铁高尔夫球杆中的每个高尔夫球杆之间变化，使得长铁杆的槽的宽度大于中间铁的槽的宽度，并且槽的宽度 中间的铁杆大于短铁杆槽的宽度。

    Golf club head and golf clubs
    5.
    发明授权
    Golf club head and golf clubs 有权
    高尔夫球杆头和高尔夫球杆

    公开(公告)号：US08016694B2

    公开(公告)日：2011-09-13

    申请号：US12610332

    申请日：2009-11-01

    申请人： David Llewellyn ,  Tetsuya Kanayama ,  Masao Nagai

    发明人： David Llewellyn ,  Tetsuya Kanayama ,  Masao Nagai

    IPC分类号： A63B53/04 ,  A63B53/06

    CPC分类号： A63B53/0466 ,  A63B53/04 ,  A63B60/02 ,  A63B60/52 ,  A63B2053/0433 ,  A63B2053/0458 ,  A63B2053/0491

    摘要： A golf club head of the wood-type, including: a body defining an interior cavity and including a ball-striking face, a sole, a crown, and a ribbon extending rearwardly from the face; an elongated groove that extends along a portion of the ribbon; a weight slidably disposed in the elongated grove; and a fastener affixed to the weight capable of selectively fixing a location of the weight. Other aspects, features, and embodiments are also claimed and described.

    摘要翻译： 一种木制的高尔夫球杆头，包括：一个限定内腔的主体，包括一个击球面，一个鞋底，一个表冠和一个从表面向后延伸的带状物; 沿所述带的一部分延伸的细长槽; 可滑动地设置在细长树丛中的重物; 以及固定到所述重物上的紧固件，所述紧固件能够选择性地固定所述重物的位置。 还要求和描述其它方面，特征和实施例。

    Trial golf club for measuring loft angle and methods for using the same
    6.
    发明授权
    Trial golf club for measuring loft angle and methods for using the same 失效
    用于测量顶角的试验高尔夫球杆及其使用方法

    公开(公告)号：US07517286B2

    公开(公告)日：2009-04-14

    申请号：US11539307

    申请日：2006-10-06

    申请人： Masao Nagai ,  Chris Voshall ,  Bill Price ,  David Llewellyn ,  Richard Delvac

    发明人： Masao Nagai ,  Chris Voshall ,  Bill Price ,  David Llewellyn ,  Richard Delvac

    IPC分类号： A63B53/06

    CPC分类号： A63B69/3617 ,  A63B53/047 ,  A63B60/42 ,  A63B60/52 ,  A63B69/3623 ,  A63B69/3661 ,  A63B2053/026 ,  A63B2053/0408 ,  A63B2053/0433 ,  A63B2209/10

    摘要： The invention is directed toward a trial golf club head and method for determining the optimal loft angle for any golf club, and in particular a hybrid-type golf club. The invention includes a trial golf club head having a face portion, a leading edge portion, a toe portion, a heel portion, a back portion having a trailing edge portion, and a sole portion. The sole portion contains a number of equally spaced graduated indicia, which are substantially parallel to one another and extend from the toe portion to the heel portion. The distance between the graduated indicia is approximately 3.75 centimeters (cm), which corresponds to an incremental loft angle of approximately 3 degrees. The sole portion has a radius of curvature of 71.67 mm, which extends from the leading edge of the face portion to the trailing edge of the back portion.

    摘要翻译： 本发明涉及用于确定任何高尔夫球杆，特别是混合型高尔夫球杆的最佳俯仰角的试验高尔夫球杆头和方法。 本发明包括具有面部部分，前缘部分，脚趾部分，跟部部分，具有后缘部分的后部部分和底部部分的试验高尔夫球杆头部。 鞋底部分包含多个相等间距的刻度标记，它们基本上彼此平行并且从脚趾部分延伸到跟部。 刻度标记之间的距离约为3.75厘米（cm），这对应于大约3度的增量倾角。 鞋底部分具有71.67mm的曲率半径，其从面部的前缘延伸到后部的后缘。