发明名称 Tetherable game ball
摘要 A tetherable game ball is provided that includes a resilient hollow ball (48) having an aperture (52) through which a line (54) having two ends extends therethrough to a position within the hollow ball (48) to form a loop located exteriorly of the ball (48) for allowing a tether to be secured thereto. Each end of the line (54) that is located within the hollow ball (48) forms a knot (56, 58) for restraining the line (54) from being pulled through the aperture (52). The game ball can be constructed so as to have rebound and elastic properties similar to those of a racquet ball.
申请公布号 US4272076(A) 申请公布日期 1981.06.09
申请号 US19790103458 申请日期 1979.12.14
申请人 SONG, JAE M.;LIGON, SAMUEL B. 发明人 SONG, JAE M.;LIGON, SAMUEL B.
分类号 A63B43/00;(IPC1-7):A63B39/00;A63B43/02 主分类号 A63B43/00
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