Shoe sole with an integrated buffering unit and method for making the same

Abstract

A shoe sole includes a sole body having a shock absorbing unit integrally connected to a recess in the sole body and a fabric is attached to the sole body. The shock absorbing unit extends from a hole defined through the fabric. The buttering unit includes a bladder in which the elastic Polyurethane is received and a flange extends from a periphery of the bladder so as to be engaged with the recess in the sole body.

What is claimed is:  
     
         1 . A shoe sole comprising: 
 a sole body having a shock absorbing unit integrally connected to a recess in the sole body, the shock absorbing unit made of Polyurethane and being elastic, and    a fabric attached to the sole body and the shock absorbing unit extending from a hole defined through the fabric.    
     
     
         2 . The shoe sole as claimed in  claim 1 , wherein the buttering unit includes a bladder in which the elastic Polyurethane is received, a flange extending from a periphery of the bladder and engaged with the recess in the sole body.  
     
     
         3 . The shoe sole as claimed in  claim 1 , wherein the sole body includes a plurality of apertures defined therethrough.  
     
     
         4 . A method for making a shoe sole, comprising: 
 step 1: displacing a shock absorbing unit in a first cavity defined in a first mold;    step 2: putting a fabric in the first cavity and the fabric having an aperture through which the shock absorbing unit is extended;    step 3: pouring Polyurethane in a second cavity defined in the second mold; and    step 4: overlapping the first mold onto the second mold and heating the Polyurethane to form a sole with a fabric and a shock absorbing unit.    
     
     
         5 . The method as claimed in  claim 4  wherein the second mold includes a netted area defined in the second cavity and the netted area includes ridges crossing over with each other.