Method of making ball bat metal body system
    5.
    发明授权
    Method of making ball bat metal body system 失效
    制作球金属体系的方法

    公开(公告)号:US3691625A

    公开(公告)日:1972-09-19

    申请号:US3691625D

    申请日:1971-03-19

    Inventor: SWENCK GEORGE F

    Abstract: The hollow metal body for a ball bat is made by swaging one end of a cylindrical metal extrusion to form the handle portion of reduced diameter, and the swaged end is then drilled out to reduce the wall thickness and thereby put more of the metal weight at the large diameter end, where balls are hit.

    Abstract translation: 用于球蝙蝠的中空金属体是通过将圆柱形金属挤压件的一端模压成直径减小的把手部分制成的,然后钻出锻模端以减小壁厚,从而将更多的金属重量放在 大直径的末端,球被击中。

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