Racket string tensioning device
    1.
    发明授权
    Racket string tensioning device 失效
    球拍绳张紧装置

    公开(公告)号:US4721304A

    公开(公告)日:1988-01-26

    申请号:US755891

    申请日:1985-09-13

    IPC分类号: A63B51/12 A63B49/00

    CPC分类号: A63B51/12 Y10T24/2158

    摘要: A tension adjusting device for rackets. The system allows the player to adjust the tension of a number of strings while in the course of a match. By rotating a device having an offcenter hole and irregular sides the string which through it passes is extended or allowed to contract thereby providing a difference in the play of the racket.

    摘要翻译: 用于球拍的张力调节装置。 该系统允许玩家在匹配过程中调整多个弦的张力。 通过旋转具有偏心孔和不规则侧面的装置,通过它穿过的绳子被延伸或允许收缩,从而提供球拍的游隙的差异。