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    • 4. 发明授权
    • Takraw ball
    • 拉夫球
    • US4813674A
    • 1989-03-21
    • US71186
    • 1987-07-08
    • Boonchai Lorhpipat
    • Boonchai Lorhpipat
    • A63B39/00
    • A63B39/00A63B2039/003
    • Disclosed herein is a takraw ball comprising hoops woven into a spherical basket, each hoop being formed of an elongate, generally flat strip of plastics material, each strip having one convex side edge of constant radius and the other side edge of sinusoidal undulating profile and being joined by its ends to form a frusto-conical hoop; pairs of hoops being arranged with the strip convex side edges opposed in a common plane or in parallel planes and the sinusoidal side edges relatively staggered so that interwoven hoops intersect at the troughs of sinusoidal side edges.
    • 本文公开了一种包括编织成球形篮状物的箍的每个箍,每个箍由细长的,大致平坦的塑料材料条形成,每个条具有恒定半径的一个凸侧边缘和正弦波状轮廓的另一侧边缘,并且是 通过其端部连接以形成截头圆锥形箍; 一对箍被布置成带状凸出侧边缘在公共平面或平行平面中相对,并且正弦侧边缘相对错开,使得交织的箍在正弦侧边缘的谷处相交。