Patent ID: 8112909

Claim:
A shoe sole with reinforcing structure for an arch of a foot, comprising: an outer sole; a midsole attached to a top surface of the outer sole; and a reinforcing member for reinforcing an arch portion of the midsole, the arch portion covering the arch of the foot, wherein the midsole is formed of resin foam and has a first arch at a bottom portion of the arch portion of the midsole, the first arch has a bottom surface, the outer sole is substantially not attached to the first arch of the midsole, the reinforcing member has a second arch located at the arch portion of the midsole, a fore end part located in front of the second arch and a rear end part located in a rear of the second arch, the second arch has a top surface and a bottom surface, the fore end part of the reinforcing member is bonded to at least either the midsole or the outer sole, in front of the first arch, the rear end part of the reinforcing member is bonded to at least either the midsole or the outer sole, in a rear of the first arch, wherein a Young's modulus of the reinforcing member is set to be greater than a Young's modulus of the first arch of the midsole, no part of the reinforcing member, having a greater Young's modulus than the Young's modulus of the first arch is affixed to the bottom surface of the first arch, the reinforcing member is arranged so that portions of the top surface of the second arch and portions of the bottom surface of the first arch are spaced apart from each other with no intervening structure therebetween, and at least a part of the bottom surface of the first arch is not in contact with at least a part of the top surface of the second arch in vertically spaced relationship to each other, whereby non-contact areas of the first arch and the second arch are defined and the non-contact areas can be deformed independently from each other at the arch portion of the midsole when impact load of landing is applied.