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1. 发明授权

US4966367A Ball striking practice apparatus 失效
标题翻译：打击练习器具
公开(公告)号：US4966367A
公开(公告)日：1990-10-30
申请号：US399078
申请日：1989-08-28
申请人： Hector A. Oyarzabal
发明人： Hector A. Oyarzabal
IPC分类号： A63B69/00
CPC分类号： A63B69/0084
摘要： A ball striking practice apparatus comprises a lower anchor means, an upper anchor means and an intermediate anchor means horizontally spaced relative to the aforementioned anchor means but defining therewith a vertical plane which normally is bisected by the body of the person utilizing the practice device. A practice ball is positioned between the aforementioned three anchor elements by three elastic cords. The ball is diametrically traversed by a wire having looped ends on the exterior of the ball which provide anchoring means at the top and bottom surfaces of the ball. A horizontal, radially disposed wire is inserted into the ball and has a hooked end engaging the center of the diametrical wire. The radially disposed wire defines a looped end exteriorly of the ball and positioned radially intermediate the top and bottom loop ends. Each of the looped ends. Each of the bolt elements defines an anchor for one of the elastic cords and the three elastic cords are respectively secured to the lower anchor means, the upper anchor means and the intermediate anchor means to thereby position the ball for striking by a player. The ball will rapidly return to its initial position without engaging in a flight path that would threaten the player after the practice ball is hit.
摘要翻译：击球练习装置包括下锚固装置，上锚固装置和中间锚固装置，其相对于上述锚固装置水平地间隔开，但是限定了垂直平面，该垂直平面通常由使用练习装置的人的身体平分。练习球通过三条弹性线定位在上述三个锚定元件之间。球通过具有环形端部的线在球的外部沿直径方向穿过，其在球的顶部和底部表面处提供锚定装置。一个水平的径向布置的导线插入到球中，并且具有接合直径线的中心的钩端。径向设置的线限定球的外部的环形端，并且位于径向中间的顶部和底部环端。每个循环结束。每个螺栓元件限定用于弹性绳之一的锚固件，并且三个弹性绳分别固定到下锚固装置，上锚固装置和中间锚固装置，由此定位用于玩家击打的球。球将迅速恢复到初始位置，而不会进入在练习球被击中后会威胁玩家的飞行路径。

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