Shoe sole and a shoe fitted with such a sole

Abstract

The present invention provides a shoe sole including a main shock-absorber part that extends in the hindfoot region and from the medial side towards the lateral side of said sole, said main shock-absorber part comprising top and bottom elements and a partition element having at least one portion with a longitudinal axis (P), said partition element extending between said top and bottom elements so as to form at least two cavities, namely a medial cavity and a lateral cavity that open out respectively to the medial side and to the lateral side of said sole. Advantageously, the hind edges of the top and bottom elements include respective medial and lateral top regions and medial and lateral bottom regions arranged on either side of said axis (P), and the medial and lateral top regions extend in rectilinear manner respectively towards the lateral and medial bottom regions, so as to form an X-shaped structure with a longitudinal axis (l) that coincides with said axis (P).

1 . A shoe sole, including a main shock-absorber part that extends in the hindfoot region and from the medial side towards the lateral side of said sole, said main shock-absorber part comprising top and bottom elements and a partition element having at least one portion with a longitudinal axis (P), said partition element extending between said top and bottom elements so as to form at least two cavities, namely a medial cavity and a lateral cavity that open out respectively to the medial side and to the lateral side of said sole, said shoe sole being characterized in that the hind edges of the top and bottom elements include respective medial and lateral top regions and medial and lateral bottom regions arranged on either side of said axis (P), and in that the medial and lateral top regions extend in rectilinear manner respectively towards the lateral and medial bottom regions, so as to form an X-shaped structure with a longitudinal axis (l) that coincides with said axis (P). 
     
     
         2 . A shoe sole according to  claim 1 , characterized in that said axis (P) intersects the middle axis (S) of said sole so as to form an angle alpha that is less than or equal to 45°. 
     
     
         3 . A shoe sole according to either  claim 1 , characterized in that the partition element follows a curvilinear path (T) in the hindfoot region. 
     
     
         4 . A shoe sole according to  claim 1 , characterized in that the top and bottom elements of the main shock-absorber part are joined together in the midfoot region. 
     
     
         5 . A shoe sole according to  claim 1 , characterized in that the main shock-absorber part is a single piece. 
     
     
         6 . A shoe sole according to  claim 1 , characterized in that the top element comprises medial and lateral regions defining the medial and lateral cavities in part, and in that said medial and lateral regions slope towards said partition element. 
     
     
         7 . A shoe sole according to  claim 1 , characterized in that the bottom element comprises medial and lateral regions defining the medial and lateral cavities in part, and in that said medial and lateral regions slope towards said partition element. 
     
     
         8 . A shoe sole according to  claim 1 , characterized in that the lateral regions of the top and bottom elements are raised, at least in part, relative to the medial regions of the top and bottom elements. 
     
     
         9 . A shoe sole according to  claim 1 , characterized in that the partition element has an X-shaped structure. 
     
     
         10 . A shoe sole according to  claim 1 , characterized in that it includes a top shock-absorber part having top and bottom faces and including, at least along part of its periphery, vertical rims that extend from its top face so as to form a housing for confining the heel of the foot, the bottom face being configured so as to match closely with the top element of the main shock-absorber part, thereby forming a projection that is arranged on the medial and lateral top regions of the top element. 
     
     
         11 . A shoe sole according to  claim 1 , characterized in that said at least two cavities, namely a medial cavity and a lateral cavity, are empty. 
     
     
         12 . A shoe sole according to  claim 1 , characterized in that it includes one or more medial and/or lateral shock-absorber parts that are fastened in the medial and/or lateral cavity(ies). 
     
     
         13 . A shoe sole according to  claim 1 , characterized in that it includes one or more removable shock-absorber parts, and holder means arranged on the main shock-absorber part and/or the or said removable shock-absorber part(s), so as to enable the or said shock-absorber part(s) to be secured in removable manner in the medial and/or lateral cavity(ies). 
     
     
         14 . (canceled) 
     
     
         15 . A shoe sole according to  claim 1  for sporting activities. 
     
     
         16 . A shoe sole according to  claim 2  characterized in that said angle alpha is less than or equal to 30°. 
     
     
         17 . A shoe sole according to  claim 3  characterized in that said curvilinear path (T) is preferably symmetrical, about the middle axis (S) of the sole, to the path (T) of the center of pressure of the foot during spontaneous rolling of the foot on the ground. 
     
     
         18 . A shoe sole according to  claim 5  characterized in that the main shock-absorber part ( 2 ) is a single piece made of one or more thermoplastic polymers. 
     
     
         19 . A shoe including a shoe sole according to  claim 1 .