Patent ID: 6295744
Filing Date: 2001-10-02
Classification: A43B

Abstract:
A shoe sole for a shoe, comprising:a midsole and a bottom sole;the midsole having a midsole inner surface and a midsole outer surface which together circumscribe a midsole lateral side, a midsole medial side and a midsole middle portion located between the midsole lateral side and the midsole medial side,the midsole lateral side comprising a lateral sidemost section and the midsole medial side comprising a medial sidemost section, each said sidemost section being located outside of a straight vertical line extending through the midsole at a respective sidemost extent of said midsole inner surface, as viewed in a shoe sole frontal plane cross-section when the shoe sole is in an upright, unloaded condition;at least one of the midsole lateral side and the midsole medial side comprising a convexly rounded midsole inner surface portion, the convexity being determined relative to a section of the midsole located directly adjacent to the convexly rounded midsole inner surface portion, as viewed in the shoe sole frontal plane cross-section when the shoe sole is in an upright, unloaded condition;at least the midsole side having the at least one convexly rounded midsole inner surface portion comprising a concavely rounded midsole outer surface portion, the concavity being determined relative to an inner section of the midsole located directly adjacent to the concavely rounded midsole outer surface portion, as viewed in the shoe sole frontal plane cross-section when the shoe sole is in an upright, unloaded condition;an upper part of the midsole in said at least one midsole side which has the concavely rounded midsole outer surface portion extending up to above a level corresponding to lowest point of the midsole inner surface of the same midsole side,the midsole comprising a first midsole portion which forms at least a part of the midsole middle portion and at least a part of the midsole side which has the concavely rounded midsole outer surface portion, as viewed in the shoe sole frontal plane cross-section when the shoe sole is in an upright, unloaded condition;the midsole comprising a second midsole portion which forms at least a part of the midsole middle portion, as viewed in the shoe sole frontal plane cross-section when the shoe sole is in an upright, unloaded condition,said second midsole portion having at least a part with a midsole firmness that is different than a firmness of at least a part of said first midsole portion, all as measured in an area of the shoe sole adjacent and including said frontal plane cross-section during a shoe sole upright, unloaded condition;the first and second midsole portions each having a contact surface which together form a boundary between said first and second midsole portions; anda thickness of the first midsole portion gradually decreases from a first radial thickness to a lesser radial thickness, the radial thickness being measured from the boundary to an midsole outer surface of the first midsole portion located below a sidemost extent of a midsole side, and the radial thickness being measured along a line extending perpendicular to a line tangent to the boundary, all as viewed in the shoe sole frontal plane cross-section when the shoe sole is in an upright, unloaded condition.