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    • 11. 发明授权
    • Water tumbler and roller float
    • 水滚筒和滚筒浮子
    • US3953024A
    • 1976-04-27
    • US539007
    • 1975-01-06
    • Leonard M. G. Brubacher
    • Leonard M. G. Brubacher
    • B63B35/73B63H1/38B63B35/72
    • B63B35/73B63H1/38
    • A hollow semi-rigid cigar-shaped float formed with helical external projections in the form of two corkscrew threads for use in water sport. Each corkscrew thread projection is formed from the middle of the float to an end, with one end of the float shaped as a right hand thread and the other shaped as a left hand thread. When a swimmer stands on the middle portion of the float, in water, and causes the float to rotate, the effect of the external rotation of both threads in the water, cancels any sidewise thrust of either thread. However, by shifting his position on the float so that a greater length of one thread is immersed in the water, the user may cause the float to move in one axial direction or the other, when the float is caused to rotate, in simulated log-rolling fashion. A quantity of water may be added to the internal recess of the float for purposes of ballast and the internal surface of the float may be fitted with projections to retard the motion of the water ballast, in relation to the internal wall of the float.
    • 一个中空的半刚性雪茄形浮子,形成两个螺旋形螺旋形外螺纹外形,用于水上运动。 每个螺丝螺纹突起从浮子的中间形成一端,浮体的一端形成右手螺纹,另一端形成左手螺纹。 当游泳者站在浮子的中间部分,在水中,并使浮子旋转时,两个螺纹在水中的外部旋转的影响消除任一螺纹的任何横向推力。 然而,通过在浮子上移动其位置使得一根螺纹的较长的长度浸入水中,使用者可以使浮子沿着一个轴向方向移动,另一方面,当浮子被旋转时,在模拟日志 滚动时尚。 为了镇流器的目的,可以将一定量的水添加到浮子的内部凹槽中,并且浮子的内表面可以装配有突起,以相对于浮子的内壁延迟水压载体的运动。