Patent ID: 8858373

Claim:
A ball bat extending along a longitudinal axis, the bat comprising: a barrel portion formed at least in part of a fiber composite material, the fiber composite material including at least first and second plies arrangements, the first ply arrangement defining a first ply arrangement thickness and including at least one ply having a first plurality of fibers and at least a first resin, the first ply arrangement thickness including a stacking of at least two fiber bundles, each of the at least one ply and the at least two fiber bundles of the first ply arrangement defining at least one first angle with respect to the longitudinal axis, each of the at least one first angle being of the same angular polarity with respect to the longitudinal axis, the second ply arrangement defining a second ply arrangement thickness and including at least one ply having a second plurality of fibers and at least a second resin, each of the at least one ply of the second ply arrangement defining at least one second angle with respect to the longitudinal axis, each of the at least one second angles being of the same angular polarity with respect to the longitudinal axis, the polarity of the at least one first angle being opposite of the polarity of the at least one second angle, the ratio of the first ply arrangement thickness to the second ply arrangement thickness being at least 1.5, the first ply arrangement being positioned over and within 0.002 in of the second ply arrangement.