Patent ID: 6662473
Filing Date: 2003-12-16
Classification: A43B

Abstract:
A shoe comprising an ergonomic insole unit, and an upper having a bottom margin attached to said insole unit, said insole unit including a heel part which includes a base, a rear upward flange projecting upward from a periphery of said base and making a U-shaped turn around said base, said upward flange extending inwardly of said bottom margin of said upper, said base having a planar bottom face, said rear upward flange having an outer surface extending upward from said planar bottom face and forming a corner with said planar bottom face, said heel part further having a concave inner surface opposite to said outer surface and said planar bottom face, said inner surface extending gradually upward and outward along a direction from a mid part of said base to a top end of said upward flange and having a curved face extending along said corner, said heel part having, between said planar bottom face and said inner surface, a thickness which decreases gradually from said upward flange toward said mid part.