| 摘要 |
<p>A distributor of balls, includes a hopper (6) for containing a suitable number of balls (P), which are discharged one by one by means (7,9) controlled by the player or automatically by other means (12,13). There are means (11) for electric feeding of the discharging means and of control means, and there are means (15) for conveying the ball, cyclically discharged from the hopper, to the proper height and for making the same ball fall, due to gravity force, in front and beside the player, so that the he/she can volley the falling ball or hit the ball on the rebound, in order to exercise correct tennis strokes. <IMAGE></p> |
