TODAYS PATENT- SHOCK ABSORBING DEVICE FOR SHOE SOLE IN REAR FOOT PART

The Shock absorbing device for shoe sole in rear foot part was invented by Tsuyoshi Nishiwaki, Shinji Shenda the 1^st of October 2013, bearing patent number US8544190B2.

The above invention provides a shock absorbing device for a shoe sole in a rear foot part which can restrain the inclination of the foot toward the medial side while absorbing the shock of landing on the lateral side of the foot. It Includes – a support element M; deformation elements 3 disposed below the support element, the deformation elements deforming to be compressed vertically at landing; and outer sole elements 2 contacting a ground at landing, each outer sole element being joined to a bottom surface of the respective deformation element. 

Both the deformation elements 3 and the outer sole elements 2 are substantially separated in a medial-lateral direction in the rear foot part to be arranged at least three regions of the rear foot part.  A quotient obtained by dividing an area of a bottom surface of the support element M by an area of bottom surfaces of the outer sole elements 2 is set at about 1.3 or more in the rear foot part. A vertical compressive stiffness of the deformation element 3 disposed on the lateral side is smaller than that of the deformation element 3 disposed on the medial side.

The present invention is applicable to shoe soles of various shoes such as athletic shoes.