A - Human Necessities – 43 – B
Patent
A - Human Necessities
43
B
36/6, 36/77
A43B 13/14 (2006.01) A43B 5/00 (2006.01) A43B 5/06 (2006.01)
Patent
CA 1340997
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. In a more conventional embodiment, wherein the side contours of the shoe sole are formed by variations in the bottom surface alone, the edge portion of the sole is contoured and defined by an arc of a circle having a radius equal to the thickness of the sole portion of the sole and its center at a point lying oil the plane of the upper surface of the sole thickness.
617033
Anatomic Research Inc.
Ellis Frampton E. III
Gowling Lafleur Henderson Llp
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