Patent ID: 8291615

Claim:
An inner sole structure for a sports shoe comprising: an upper sheet member disposed on an upper side of at least a heel region of said inner sole structure; a lower sheet member disposed below said upper sheet member; a wavy corrugated sheet member that is interposed between said upper sheet member and said lower sheet member, and that has at least two downwardly convex protrusions disposed longitudinally adjacent one another in a longitudinal direction of said inner sole structure, wherein said downwardly convex protrusions form respective voids between said downwardly convex protrusions and said upper sheet member, and wherein said downwardly convex protrusions are not fixedly attached to, but rather are in sliding contact with, an upper surface of said lower sheet member such that said downwardly convex protrusions slide longitudinally in said longitudinal direction along said lower sheet member when said wavy corrugated sheet member is subjected to compressive deformation; and a first cushion of a deformable elastic material arranged extending along at least a portion of a surface of said upper sheet member, wherein a front end portion of said wavy corrugated sheet member in said longitudinal direction is connected to said first cushion, and wherein said first cushion is arranged on top of said upper sheet member and extending along a top surface of said upper sheet member.