Patent ID: 6584706
Filing Date: 2003-07-01
Classification: A43B

Abstract:
A shoe sole designed to emulate the structure and function of the intended wearer's foot sole, thereby improving shoe sole stability and cushioning, including:at least an underneath shoe sole portion located below an intended wearer's foot location, as viewed in a shoe sole frontal plane during a shoe upright condition, the underneath portion formed with a sole inner surface and a sole outer surface, the sole inner surface being adjacent an intended wearer's foot and having at least a concavely rounded portion, as viewed in the frontal plane, when the shoe is upright and not under a bodyweight load, and the concavity being determined with respect to the intended wearer's foot location within the shoe, the sole outer surface having at least a concavely rounded portion extending through a lowest portion of the sole outer surface, as viewed in the frontal plane, during the unloaded, upright shoe condition, the concavity again determined with respect to the intended wearer's foot location within the shoe, the concavely rounded underneath portion thereby providing stable support similar to a rounded underneath portion of the intended wearer's bare foot; and at least one cushioning compartment located between the sole inner surface and the sole outer surface, the at least one cushioning compartment including a gas, gel, or liquid, the at least one cushioning compartment thereby cushioning in a manner similar to a fat pad of the intended wearer's bare foot sole so that the shoe sole can more easily deform to flatten into a stable base under bodyweight load during tilting sideways motion of the wearer's foot on the ground, thereby further enhancing the stability improvement provided by the concavely rounded portions, and wherein, the frontal plane is located in the heel area of the shoe sole and a heel area sole thickness is greater than forefoot area sole thickness.