| 摘要 |
A baseball bat or the like comprised of one or more continuous spiral wound layers of wood, cellulose, or other like material rolled in a spiral fashion from the center to the outermost surface. The cellulose or other material is bound to each subsequent layer with a thin layer of resin, glue, epoxy, or other binding material of adequate strength to hold the layers together for multiple impacts by a baseball or other object. This spiral wound composite roll, in its final configuration, is of comparable density, weight and balance to ash, maple or oak material commonly used in baseball bat construction. The composite roll can be machined to a shape consistent with the shape and balance of traditional baseball bats.
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