Patent ID: 6745499
Filing Date: 2004-06-08
Classification: A43B

Abstract:
A shoe sole, comprising:a midsole formed from a first elastomeric material, said midsole having a top surface, a bottom surface, and a side wall which define a first thickness; an outsole having a top surface, a bottom surface, and a side wall which define a second thickness; and a resilient insert formed from a second elastomeric material and disposed between said bottom surface of said midsole and said top surface of said outsole, said resilient insert comprising a heel chamber, a forefoot chamber, and a passageway fluidly connecting said heel chamber and said forefoot chamber; wherein said-second elastomeric material enables said resilient insert to recover at a rate similar to the rate of recovery of said midsole, to permit said resilient insert and said midsole to absorb and recover from impact forces applied to the shoe sole at substantially equal rates.