CONTROLLING THE STIFFNESS OF A HOLLOW METAL BAT BY PROVIDING HELICAL INTERNAL RIBS
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United States of America Patent
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app pub date -
Mar 1, 2012
filing date -
Mar 1, 2011
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Abandoned
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Abstract
A hollow metal bat comprising an elongated tubular structure having a barrel portion, a handle portion and a tapered portion connecting the barrel portion to the handle portion, and further comprising at least one helical internal rib formed along at least a portion of the elongated tubular structure.
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