Shoe sole with air cushion

Abstract

A shoe sole air cushion includes a hollow main body defining an air chamber. The main body includes bottom and top walls, and a peripheral wall connected between the bottom and top walls. The bottom wall includes a plurality of lower pins projecting upwardly from an inner surface of the bottom wall. The top wall includes a plurality of upper pins projecting downwardly from an inner surface of the top wall. The upper and lower pins respectively have tapered ends. The tapered ends of the upper pins are connected respectively to the tapered ends of the lower pins.

1 . A shoe sole air cushion comprising: 
 a hollow main body defining an air chamber, and including a bottom wall, a top wall, and a peripheral wall connected between said bottom and top walls, said bottom wall including a plurality of lower pins projecting upwardly from an inner surface of said bottom wall, said top wall including a plurality of upper pins projecting downwardly from an inner surface of said top wall, said upper and lower pins respectively having tapered ends, said tapered ends of said upper pins being connected respectively to said tapered ends of said lower pins.    
   
   
       2 . The shoe sole air cushion as claimed in  claim 1 , wherein said bottom wall further includes a plurality of holes extending respectively into said lower pins from an outer surface of said bottom wall, and said top wall further includes a plurality of holes extending respectively into said upper pins from an outer surface of said top wall.  
   
   
       3 . The shoe sole air cushion as claimed in  claim 1 , wherein said main body further includes a plurality of resilient neck sections, each of which interconnects one of said lower pins and one of said upper pins.  
   
   
       4 . The shoe sole air cushion as claimed in  claim 1 , wherein the density of said upper or lower pins is substantially 3 pins per square centimeter area of said top or bottom wall.  
   
   
       5 . The shoe sole air cushion as claimed in  claim 1 , wherein said peripheral wall is transparent, and has two opposite transparent protrusions which project outwardly from said peripheral wall.  
   
   
       6 . A shoe sole comprising: 
 a sole unit having a cavity; and    an air cushion disposed in said cavity, said air cushion including a hollow main body defining an air chamber and having a bottom wall, a top wall, and a peripheral wall connected between said bottom and top walls, said bottom wall including a plurality of lower pins projecting upwardly from an inner surface of said bottom wall, said top wall including a plurality of upper pins projecting downwardly from an inner surface of said top wall, said upper and lower pins respectively having tapered ends, said tapered ends of said upper pins being connected respectively to said tapered ends of said lower pins.    
   
   
       7 . The shoe sole as claimed in  claim 6 , wherein said bottom wall further includes a plurality of holes extending respectively into said lower pins from an outer surface of said bottom wall, and said top wall further includes a plurality of holes extending respectively into said upper pins from an outer surface of said top wall.  
   
   
       8 . The shoe sole as claimed in  claim 6 , wherein said main body further includes a plurality of resilient neck sections, each of which interconnects one of said lower pins and one of said upper pins.  
   
   
       9 . The shoe sole as claimed in  claim 6 , wherein the density of said upper or lower pins is substantially 3 pins per square centimeter area of said top or bottom wall.  
   
   
       10 . The shoe sole as claimed in  claim 1 , wherein said peripheral wall is transparent, and has two opposite transparent protrusions which project outwardly from said peripheral wall.