Patent ID: 7985149
Filing Date: 2011-07-26
Classification: A63B

Abstract:
1. A bat for baseball or softball comprising: a first tube formed from FRP or synthetic resin having a grip part, a taper part, a part to be hit, a tip part, and a stopper part formed by gradually opening said first tube from said part to be hit side towards said tip part side, and a hollow for latching having a groove shape formed by reducing the diameter of said first tube; a cylindrical second tube having two ends which are open, and having an interior diameter which is larger than an exterior diameter of said part to be hit and smaller than an exterior diameter of said stopper part, said second tube including at least two or more layers; a first fixing component having a donut shape and including a body part and a flange part, said flange part having a larger exterior diameter than an exterior diameter of said body part, and said first fixing component having an opening larger than an exterior diameter of said part to be hit, and an interior periphery surface of said body part being fixed to said first tube and one surface of said flange part being fixed to said stopper part; a second fixing component having a donut shape and including a base part and an insertion part, said insertion part having a smaller exterior diameter than the largest exterior diameter of said base part, and also including a protrusion part which protrudes inwards and an opening which is larger than an exterior diameter of said part to be hit, said protrusion part being fixed by interlocking with said hollow for latching, and; a gap located between said first tube and said second tube and being formed by said second tube being attached to an exterior periphery of said first tube, one end of said second tube being fixed to an exterior periphery surface of said body part, and the other end of said second tube being fixed to said insertion part which is inserted between said first tube and said second tube.