Patent ID: 7779558
Filing Date: 2010-08-24
Classification: A43B

Abstract:
1. A shock absorbing device for a shoe sole comprising: an outer sole having a ground contact surface that contacts the ground at landing and an upper surface opposite to the ground contact surface; a midsole that is disposed above the outer sole and has a bottom surface; and a deformation element disposed between the outer sole and the midsole, wherein the deformation element is joined to the bottom surface of the midsole and is joined to the upper surface of the outer sole, the deformation element has a tubular part in a flat tubular form, Young's modulus of a material constituting the tubular part is greater than both that of a material constituting the midsole and that of a material constituting the outer sole, the tubular part is arranged so as to have a major axis generally along a longitudinal direction of a foot and a minor axis generally along a vertical direction, a length of the major axis is set within a range of about 25 mm to about 80 mm, the tubular part has a lower portion that is curved so as to be convex downwards and thereby undergoes bending deformation due to an impact load of landing, a concave first curved surface is provided on the upper surface of the outer sole, the lower portion of the tubular part fits into the first curved surface of the outer sole, a connecting member having a greater Young's modulus than the midsole is joined to the bottom surface of the midsole, the tubular part is joined to the connecting member, and by joining the tubular part to the connecting member, the deformation element is retained by the connecting member.