| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball pitching device for hitting training, which gives a desired ball speed to a ball, is light in weight to be easily moved and carried, and further solves a problem in which an engine generator is required since there is no power source on the outdoor river bed ground or the like for instance, by providing a battery. <P>SOLUTION: In the ball pitching device, a wheel of a bicycle is used as a means for hitting a ball, a desired ball speed is easily added to the ball by centrifugal force by the continuous rotation of the wheel, the device is made light in weight by using the efficient wheel of small resistance as a rotating body, and the battery incorporated inside the device is used for the drive source. <P>COPYRIGHT: (C)2012,JPO&INPIT |
