公开(公告)号：US11700911B2

公开(公告)日：2023-07-18

申请号：US17052123

申请日：2018-05-18

Applicant: ASICS CORPORATION

Inventor： Seigo Nakaya ,  Kenta Moriyasu ,  Yoshihito Tahira ,  Keishi Kitamoto ,  Junichiro Tateishi

IPC: A43B13/12 ,  A43B13/04 ,  A43B13/18

CPC classification number: A43B13/127 ,  A43B13/04 ,  A43B13/186 ,  A43B13/188

Abstract: A midsole includes an upper layer and a lower layer made of a foamed material; the upper layer is a low-hardness foamed material; the lower layer is a high-hardness foamed material; the low-hardness foamed material of the upper layer is a low-hardness, high-resilience material that has a higher specific gravity than the high-hardness foamed material, that has a low hardness that is lower than the hardness of the high-hardness foamed material, and that has a higher speed at which to recover to an original shape after being deformed than that of the high-hardness foamed material.