PITCHING/THROWING PRACTICE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a pitching/throwing practice device allowing a user to make accurate determination on the correction of the pitching/throwing form by himself/herself and to practice pitching/throwing while enjoying the practice.;SOLUTION: The pitching/throwing practice device comprises: a spherical body temporarily stationed at a base point and removable from the base point; a spherical body supporting plate having a moving area on which the spherical body moves; a regular trajectory part, a trajectory part disposed on the spherical body supporting plate through which the spherical body passes, disposed along a straight line connecting the base point and the center of the spherical body supporting plate; a first side trajectory part adjacent to one side of the regular trajectory part; a second side trajectory part adjacent to the other side of the regular trajectory part; a spherical body detecting part for detecting which of the three trajectory parts the spherical body passes through; and an announcing part for announcing one of the three trajectory parts through which the spherical body passes based on the detection result by the spherical body detecting part.;COPYRIGHT: (C)2009,JPO&INPIT