Patent ID: 6311414
Filing Date: 2001-11-06
Classification: A43B

Abstract:
A midsole assembly for an athletic shoe comprising:a midsole including a midsole heel portion that includes an upper midsole portion and a lower midsole portion respectively formed of a soft elastic material; anda corrugated sheet that is made of a plastic resin, is disposed in said midsole at least in said midsole heel portion between said upper midsole portion and said lower midsole portion, and has an upper corrugated surface contacting and joined to said upper midsole portion and a lower corrugated surface contacting and joined to said lower midsole portion;wherein a limited edge portion of said corrugated sheet at an outer edge of said corrugated sheet includes at least one pocket structure including plural sheet layers that are respectively spaced apart from one another in a direction perpendicular to a major extension plane along which said corrugated sheet extends, so as to form at least one void pocket respectively between neighboring spaced-apart ones of said sheet layers of said pocket structure;wherein said void pocket is limited to said pocket structure at said limited edge portion at said outer edge of said sheet; andwherein said limited edge portion of said corrugated sheet with said at least one pocket structure provides a greater compressive hardness to said midsole assembly at said limited edge portion in comparison to another portion of said corrugated sheet without said pocket structure.