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公开(公告)号:US4721304A
公开(公告)日:1988-01-26
申请号:US755891
申请日:1985-09-13
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。