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 1st 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.