Patent ID: 6877254
Filing Date: 2005-04-12
Classification: A43B

Abstract:
1. An athletic shoe sole for a shoe, comprising: a shoe outer sole and a shoe midsole; a sole heel area underneath a heel of an intended wearer's foot, a midsole inner surface for supporting a sole of said intended wearer's foot, and a midsole outer surface; a midsole central part, a midsole medial side portion and a midsole lateral side portion, as viewed in a shoe sole frontal plane cross-section in the heel area during an unloaded, upright shoe condition; the midsole lateral side portion formed by that part of the midsole located lateral of a straight vertical line extending through a sidemost extent of the midsole inner surface of a lateral side of the shoe, as viewed in the heel area frontal plane cross-section during an unloaded, upright shoe condition; the midsole medial side portion formed by that part of the midsole located medial of a straight vertical line extending through a sidemost extent of the midsole inner surface of a medial side of the shoe, as viewed in the heel area frontal plane cross-section during an unloaded, upright shoe condition; a midsole central part of the athletic shoe sole formed by that part of the midsole located between the midsole lateral side portion and the midsole medial side portion, as viewed in the heel area frontal plane cross-section during and unloaded, upright shoe condition; said midsole outer surface of said midsole central part comprising a concavely rounded portion, the concavity existing with respect to an inner section of the midsole located directly adjacent to the concavely rounded portion of the midsole outer surface, all as viewed in the heel area frontal plane cross-section during an unloaded, upright shoe condition; said midsole inner surface of said midsole central part comprising a convexly rounded portion at least through a midpoint of the midsole inner surface of the midsole central part, the convexity existing with respect to a section of the midsole directly adjacent to the convexly rounded portion of the midsole inner surface, all as viewed in the heel area frontal plane cross-section during an unloaded, upright shoe condition; at least a portion of the midsole located between said concavely rounded portion of the midsole outer surface and the convexly rounded portion of the midsole inner surface has a substantially uniform radial thickness, as viewed in a frontal plane cross-section when the shoe sole is upright and in an unloaded condition; and said shoe midsole comprises midsole material of varying firmness.