Patent ID: 8449412
Filing Date: 2013-05-28
Classification: A63B

Abstract:
1. A ball bat extending about a longitudinal axis, the bat comprising: a bat frame having a handle portion and a tubular barrel portion, the bat having a proximal end, a distal end, a center of percussion and a length of at least thirty inches, the barrel portion having an inner surface; a knob coupled to the handle portion; and an annular member coupled to the inner surface of the barrel portion, the annular member having a center of mass and being positioned within the barrel portion such that the center of mass of the annular member is longitudinally spaced apart from the center of percussion of the bat by a first distance, the first distance being at least 0.25 inches, the annular member increasing the moment of inertia of the bat measured about an axis positioned six inches from the base of the knob of the bat by no more than twenty percent, the annular member defining a central opening, the annular member including inner and outer flanges connected by only a single web.