Shoe sole and molds for makig the sole

Abstract

A shoe sole includes a chamber defined in an underside of the heel portion and an air-permeable member is received in the chamber. An air escaping area including a plurality of passages is defined in the underside of the body and communicates with the chamber. A plurality of holes are defined through a top of the boy and communicate with the air escaping area. A bottom piece is attached to the underside of the body and cover the air escaping area and the chamber. The sole is made by way of molding and by foam material.

1 . A shoe sole comprising: 
 a body including a thick heel portion and a chamber defined in an underside of the heel portion, an air escaping area defined in the underside of the body and communicating with the chamber, a plurality of holes defined through a top of the boy and communicating with the air escaping area;    an air-permeable member received in the chamber, and    a bottom piece attached to the underside of the body and covering the air escaping area and the chamber.    
     
     
         2 . The sole as claimed in  claim 1 , wherein the air escaping area includes a passage and a plurality of branch passages, the passage being in communication between the chamber and branch passages.  
     
     
         3 . The sole as claimed in  claim 1 , wherein a convex portion protrudes upward from the top of the body of the sole and is located corresponding to the chamber.  
     
     
         4 . The sole as claimed in  claim 1  further comprising a fabric layer attached to the top of the body of the sole and having a plurality of through hole which are in alignment with the holes in the body of the sole.  
     
     
         5 . The sole as claimed in  claim 1 , wherein the air-permeable member includes a plurality of upright holes defined therethrough.  
     
     
         6 . The sole as claimed in  claim 1  further comprising two valves located beside the air-permeable member.  
     
     
         7 . A mold assembly for making a shoe sole, comprising: 
 a first mold having a first concavity defined in a surface thereof and a plurality of rods extending from an inside of the first concavity, and    a second mold having a second concavity defined in a surface thereof and a protrusion extending from an inside of the second concavity, a first ridge and a plurality of second ridges extending from the inside of the second concavity, the first ridge connected between the protrusion and the second ridges.