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    Iron golf club heads and golf club sets with variable weight distribution
    7.
    发明授权
    Iron golf club heads and golf club sets with variable weight distribution 有权
    铁质高尔夫球杆头和高尔夫球杆组，重量分布不均匀

    公开(公告)号：US07972222B2

    公开(公告)日：2011-07-05

    申请号：US12492701

    申请日：2009-06-26

    申请人： David Llewellyn ,  Tetsuya Kanayama ,  Kazuhiro Doi

    发明人： David Llewellyn ,  Tetsuya Kanayama ,  Kazuhiro Doi

    IPC分类号： A63B53/04

    CPC分类号： A63B53/0475 ,  A63B53/047 ,  A63B60/52 ,  A63B60/54 ,  A63B2053/0433

    摘要： Described herein are iron golf club heads and sets of iron golf clubs that have variable weight distribution. Each iron golf club head has a cavity and a groove with a raised portion disposed therein. The groove and the raised portion can deepen the center of mass depth and lengthen 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 optional groove of the short irons. Other aspects, embodiments, and features are also claimed and discussed.

    摘要翻译： 这里描述的是具有可变重量分布的铁质高尔夫球杆头和铁质高尔夫球杆组。 每个铁质高尔夫球杆头具有一个空腔和一个设置在其中的凸起部分的槽。 凹槽和凸起部分可以加深质心深度并延长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 中间铁杆大于短铁杆可选槽的宽度。 还要求和讨论其它方面，实施例和特征。