Shoe sole with a concavely rounded sole portion
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United States of America Patent
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Oct 7, 2003
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Sep 2, 1988
priority date (Note) -
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status (Latency Note)
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Abstract
A construction for a shoe, particularly an athletic shoe such as a running shoe, includes a sole that conforms to the natural shape of the foot, particularly the sides, and that has a constant thickness in frontal plane cross sections. The thickness of the shoe sole side contour equals and therefore varies exactly as the thickness of the load-bearing sole portion varies due to heel lift, for example. Thus, the outer contour of the edge portion of the sole has at least a portion which lies along a theoretically ideal stability plane for providing natural stability and efficient motion of the shoe and foot particularly in an inverted and everted mode.
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