Spike sole reinforced by fiber reinforcement
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United States of America Patent
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Nov 1, 2016
Grant Date -
Dec 19, 2013
app pub date -
Mar 18, 2011
filing date -
Mar 18, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An FRP-made spike sole of the present invention has a plurality of spikes in a front foot portion, wherein: at least one layer of a main reinforcement sheet which is arranged spanning from a front end of the front foot portion to a rear end of a middle foot portion and made of fiber reinforcement coated with a matrix resin is laminated with a layer of a first cut-off sheet which is absent at least in an area in the vicinity of the front end of the front foot portion and which is arranged in the middle foot portion and made of fiber reinforcement coated with a matrix resin; and a front end of the first cut-off sheet is positioned posterior to a front end of a proximal phalanx of a big toe and anterior to a base of the metatarsal bone of the big toe.
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