专利名称：Soccer ball practice machine 发明人：Lawrence L. Griffith
申请号：US06/155950
申请日：19800603
公开号：US04352348A
公开日：
19821005
专利内容由知识产权出版社提供
soccer ball
摘要：A soccer ball practice machine includes a pair of juxtaposed, oppositely rotating wheels for propelling a soccer ball toward a soccer player to facilitate the practice and instruction of a wide variety of soccer skills. The orientation of these wheels can be selectively varied to permit the soccer ball to be propelled in an infinite number of directions. In addition, the distance separating the rotating juxtaposed wheels can also be adjusted to accommodate soccer balls of varying diameters and can be automatically increased to prevent damage to oversized balls due to engagement by the wheels. A large hopper includes a rotating auger which successively feeds soccer balls in the hopper into a flexible feed tube and down a rigid ball chute where they are engaged by the wheels and propelled outwardly. The flexibility of the feed tube and the rigidity of the ball chute provide accurate delivery of the balls to the wheels and confinement of the balls on all sides as they are engaged and propelled by the wheels, even though the positions of the wheels relative to the hopper may be changed to vary the direction of the ball's flight.
申请人：GRIFFITH; LAWRENCE L.
代理机构：Knobbe, Martens, Olson, Hubbard and Bear
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