US Training Bat Patent

A swing training device for improving the proper swing of ball sports including but not limited to baseball and softball. The swing training device has an elongated barrel having a substantially quasi-stadium cross-sectional shape connected to a handle portion. The hitting surface of the barrel is one of the two opposing curved surfaces of the circular segments of the quasi-stadium cross-sectional shape. The swing train- ing device may be a modified regulation wood bat that is modified via diametrically opposing longitudinal tangential section cuts so that the un-cut curved hitting surface is oriented such that the grain runs against the ball at contact.