Patent ID: 6810605
Filing Date: 2004-11-02
Classification: A43B,A43C

Abstract:
A sole structure for an athletic shoe, including a heel region and a forefoot region, and comprising:a midsole that is formed of a soft elastic material, and that comprises a midsole heel portion disposed at said heel region of said sole structure; and an outsole that is formed of a material harder than said soft elastic material, and that comprises an outsole heel portion disposed at said heel region of said mole structure, and an outsole forefoot portion that extends from said outsole heel portion to said forefoot region of said sole structure; wherein: said midsole heel portion has wavy corrugations on a corrugated lower surface thereof along at least one of a medial side portion and a lateral side portion thereof, and a smooth plane without wavy corrugations on an upper surface thereof; said wavy corrugations of said midsole heel portion include alternating successive concavities and convexities on said lower surface of said midsole heel portion; said outsole heel portion comprises a corrugated wavy plate with corrugations through its thickness along at least one of a medial side portion and a lateral side portion thereof, arranged in contact with said corrugated lower surface of said midsole heel portion, and an upraised side portion upraised from said corrugated wavy plate to encompass said midsole heel portion; and said wavy corrugations of said corrugated wavy plate of said outsole heel portion include alternating successive concavities and convexities on an upper surface of said corrugated wavy plate in phase with said alternating successive convexities and concavities on said lower surface of said midsole heel portion, and alternating successive convexities and concavities on a lower surface of said corrugated wavy plate in phase with said concavities and convexities on said upper surface of said corrugated wavy plate.