Patent ID: 6625902
Filing Date: 2003-09-30
Classification: A43B

Abstract:
A shoe sole comprising an outsole molded integrally out of rubber, an insole covering the top of the outsole, and a rim formed around the bottom of the outsole, the sole further comprising a first middle plate, a second middle plate and a third middle plate formed in the waist of the outsole and widthwise partitioning the inside of the rim, the first and third middle plates being positioned on the front and rear sides respectively of the second middle plate, the first and second middle plates having air openings formed through upper portions thereof, the sole further comprising a plurality of front plates widthwise partitioning the cavity surrounded by the rim and the first middle plate, the front plates having air openings formed through upper portions thereof, the insole covering the cavity to form a space, the outsole having a hole formed through the bottom thereof between the second and third middle plates, the sole further comprising a fabric covering the top of the hole and being air-permeable and not water-permeable, the outsole including a front portion forward from the first middle plate and a rear portion rearward from the third middle plate, the front and rear portions having different compounding ratios between the bulking and softening agents of the material for the outsole such that the front portion is considerably lower in hardness than the rear portion.