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    • 7. 发明授权
    • Iron head
    • 铁头
    • US09079081B2
    • 2015-07-14
    • US13443369
    • 2012-04-10
    • Hideo Shimazaki
    • Hideo Shimazaki
    • A63B53/04A63B53/06A63B59/00
    • A63B53/047A63B53/0475A63B60/02A63B60/54A63B2053/0408A63B2053/0433A63B2053/0454A63B2053/0491
    • An iron head includes a striking face; a backside surface; a sole surface; a hosel; a recess portion provided in an upper portion of the backside surface; a protruding portion provided at a lower portion of the backside surface and projecting backward; a first hollow portion provided on a heel side of the protruding portion; and a second hollow portion disposed on a toe side and inside the protruding portion. The protruding portion includes a middle portion between the first hollow portion and the second hollow portion. The first hollow portion is disposed away from the second hollow portion by a distance gradually increasing from an upper surface of the protruding portion toward the sole surface.
    • 铁头包括一个醒目的脸; 背面 唯一的表面; 一个插鞘 设置在所述背面的上部的凹部; 突出部,设置在所述背面的下部并向后方突出; 设置在突出部的跟部侧的第一中空部; 以及设置在所述突出部分的趾部侧和内侧的第二中空部。 突出部分包括在第一中空部分和第二中空部分之间的中间部分。 第一中空部分远离第二中空部分远离突出部分的上表面朝向鞋底表面逐渐增加的距离。