Sole, particularly for sports shoes

Abstract

A sole, particularly for sports shoes, which includes in succession from the bottom: a tread sole, a hollow mid-sole made of elastic material with a bottom that has through openings that face opposite faces thereof, and at least one upper border, which delimits a respective opening that is directed toward the bottom and is raised from it by supporting elements at least at the heel, which define a succession of lateral passages of the mid-sole that connect its internal cavity to the outside. The sole further includes a laminar support layer for the foot, which is associated perimetrically with the upper border so as to cover the opening. he laminar support layer has extensibility characteristics and the mid-sole has flexibility characteristics such that, in combination, the system returns a thrust in response to the pressure of the foot on the laminar support layer during sports activity.

1 - 20 . (canceled) 
     
     
         21 . A sole, particularly for sports shoes, comprising in succession from the bottom:
 a tread sole,   a hollow mid-sole made of elastic material, with a bottom that has through openings that face opposite faces thereof, and at least one upper border, which delimits a respective opening that is directed toward said bottom and is raised from it by means of supporting elements at least at the heel, which define a succession of lateral passages of said mid-sole that connect its internal cavity to the outside,   a laminar support layer for the foot, which is associated perimetrically with said upper border so as to cover said opening, said laminar support layer having extensibility characteristics and said mid-sole having flexibility characteristics such that in combination the system returns a thrust in response to the pressure of the foot on said laminar support layer during sports activity.   
     
     
         22 . The sole according to  claim 21 , wherein said laminar support layer has limited extensibility characteristics, so as to flex toward each other transversely opposite side walls of said mid-sole when it is subjected to the pressure of the foot, said mid-sole being made of elastically flexible material. 
     
     
         23 . The sole according to  claim 22 , wherein said laminar support layer has lower elasticity characteristics than said mid-sole. 
     
     
         24 . The sole according to  claim 23 , wherein said laminar support layer comprises at least one non-extensible net. 
     
     
         25 . The sole according to  claim 23 , wherein said laminar support layer comprises at least one substantially non-extensible net coupled to at least one film made of plastic material. 
     
     
         26 . The sole according to  claim 25 , wherein said substantially non-extensible net is made of plastic material. 
     
     
         27 . The sole according to  claim 21 , wherein said laminar support layer had greater elasticity characteristics than said mid-sole. 
     
     
         28 . The sole according to  claim 27 , wherein said laminar support layer comprises an elastically flexible net. 
     
     
         29 . The sole according to  claim 28 , wherein said elastically flexible net is made of plastic material. 
     
     
         30 . The sole according to  claim 21 , wherein said upper border is extended along the entire perimeter of said mid-sole. 
     
     
         31 . The sole according to  claim 21 , wherein said laminar support layer is associated perimetrically with said upper border by heat-sealing two films made of plastic material, between which it is interposed at its perimetric region, with said upper border . 
     
     
         32 . The sole according to  claim 21 , wherein said mid-sole is made in a single piece of thermoplastic elastomeric material. 
     
     
         33 . The sole according to  claim 21 , wherein said supporting elements protrude downwardly from the upper border and are inclined toward said heel or toward said forefoot so as to connect to said bottom. 
     
     
         34 . The sole according to  claim 21 , wherein said through openings of said bottom are defined by the crossing of a succession of transverse elements with a longitudinal pin, said transverse elements being substantially parallel to each other and extending from the lower end of said supporting elements between said two side walls of said mid-sole. 
     
     
         35 . The sole according to  claim 34 , wherein said tread sole covers said transverse elements on the side for contact with the ground, adapting to their contour, at said heel and at said forefoot. 
     
     
         36 . The sole according to  claim 21 , wherein said supporting elements are externally substantially tubular and with rounded edges and are provided in a single piece with said bottom of said mid-sole. 
     
     
         37 . The sole according to  claim 36 , wherein a succession of said supporting elements, which are arranged side by side along the perimeter of said mid-sole, defines a succession of said lateral passages that connect the internal cavity of said mid-sole to the outside. 
     
     
         38 . The sole according to  claim 37 , wherein said supporting elements are alternated in their succession, on the outer side, by separators. 
     
     
         39 . The sole according to  claim 21 , wherein said mid-sole is provided in two parts, with an upper border that is provided separately from the hollow portion of said mid-sole. 
     
     
         40 . The sole according to  claim 39 , wherein said upper border and said separators are made of thermoplastic elastomeric material and said hollow portion is made of polymeric material.