Shoe Sole, Method of Manufacturing Such a Shoe Sole and Shoe Having Such a Sole

Abstract

A shoe sole is disclosed. To improve the gait flow of persons who have hip problems, the shoe sole has a contact damper in the heel area and additionally, in the forefoot area, has a rotary element which allows the foot to rotate outwards about a previously individually determined rotational axis in the forefoot area. The underside of the shoe sole remains at least locally in frictional contact with the ground below the rotary element. Preferably, the rotary element is designed as a torsion element consisting of a fiber bundle, the torsional axis of which is substantially perpendicular to the shoe sole.

What is claimed is: 
     
         1 . A shoe sole for an orthopedic shoe, comprising:
 a heel area; and   a forefoot area;   wherein the heel area has a contact damper and wherein the forefoot area has an elastically returning rotary element with an axis of rotation extending perpendicular to the shoe sole;   wherein the rotary element has a base that connects to an underside of the shoe sole and wherein the rotary element allows at least for a limited external rotation of the shoe sole about the axis of rotation relative to the base;   wherein a transverse extent of the rotary element is at least 30% smaller than a transverse extension of the shoe sole in the forefoot area such that a position of the rotary element is determinable in manufacturing the shoe sole between a position at an outer edge of the shoe sole and a position at an inner edge of the shoe sole;   and wherein the rotary element is formed such that a resisting force against an external rotation is smaller than a resisting force against an inner rotation.   
     
     
         2 . The shoe sole according to  claim 1 , wherein, an underside of the base has a coefficient of friction which is at least as great as a coefficient of friction of a bottom of the shoe sole in the forefoot area. 
     
     
         3 . The shoe sole according to  claim 1 , wherein, the rotary element only allows only one external rotation and an automatic return after the one external rotation. 
     
     
         4 . The shoe sole according to  claim 1 , wherein above the base the rotary element has a head and wherein a substantially horizontally extending sliding zone is disposed between the head and the base. 
     
     
         5 . The shoe sole according to  claim 4 , wherein a gel pad is disposed in the sliding zone. 
     
     
         6 . The shoe sole according to  claim 1 , wherein above the base and within the shoe sole a torsion element is disposed that has a torsional axis that is substantially perpendicular to the shoe sole. 
     
     
         7 . The shoe sole according to  claim 6 , wherein the torsion element consists of a fiber bundle and wherein fibers of the fiber bundle are substantially perpendicular to a shoe sole surface. 
     
     
         8 . The shoe sole according to  claim 7 , wherein the fibers of the fiber bundle are inclined in an outer rotational direction. 
     
     
         9 . A method for producing a customized shoe sole according to  claim 1 , wherein a contact area in the heel area and a roll-off area in the forefoot area are determined for a person and wherein the contact damper is placed in the contact area and the rotary element is placed in the roll-off area. 
     
     
         10 . The method for producing a customized shoe sole according to  claim 9 , wherein contact pressure in the contact area and roll-off pressure in the roll-off area are determined for the person and wherein properties of the contact damper are adapted to the contact pressure and characteristics of the rotary element are adapted to the roll-off pressure. 
     
     
         11 . A shoe with a shoe sole according to  claim 1 .