Shoe ventilation system

Abstract

The forefoot portion of a shoe bottom includes at least one independent open air cavity composed by complementing concave arcs found in the lower midsole and upper midsole. The upper midsole includes at least one ventilation hole for the passage of air to and from the wearer's foot. During compression of the shoe bottom, caused by the wearer's foot, the open air cavity forces air through the ventilation hole, and through the insole hole introducing air into the shoe interior.

1 . A shoe bottom portion which provides ventilation to the interior of the shoe, comprising: 
 an upper midsole;    a lower midsole; and    a plurality of contacts of said upper midsole with said lower midsole, said contacts being arranged to form at least one independent open air cavity on the side of the forefoot of the shoe bottom, to thereby provide ventilation to the interior of the shoe.    
     
     
         2 . A shoe bottom portion as set forth in  claim 1 , wherein said upper midsole contains at least one ventilation hole in said upper midsole.  
     
     
         3 . A shoe bottom portion as set forth in  claim 1 , further comprising an insole formed above said upper midsole, said insole having at least one insole hole formed therein and wherein said midsole contains at least one ventilation hole associated with said at least one ventilation hole in said insole.  
     
     
         4 . A shoe bottom portion as set forth in  claim 1 , wherein said upper midsole and said lower midsole are adjoined.  
     
     
         5 . A shoe bottom portion as set forth in  claim 1 , wherein said upper midsole and said lower midsole each contain at least one concave form.  
     
     
         6 . A shoe bottom portion as set forth in  claim 1 , wherein said at least one upper midsole concave form is in correspondence with said at least one lower midsole concave form, to thereby form said at least one open air cavity.  
     
     
         7 . A shoe bottom portion as set forth in  claim 5 , wherein said open air cavity does not extend through the shoe bottom.  
     
     
         8 . A shoe bottom heel portion as set forth in  claim 1 , wherein said upper midsole is formed of EVA of approximately 65 shore C durometer hardness, and said lower midsole is formed of EVA of approximately 65 shore C durometer hardness.  
     
     
         9 . A shoe bottom portion which provides ventilation to the interior of the shoe, comprising: 
 an upper midsole;    a lower midsole;    a plurality of contacts of said upper midsole with said lower midsole, said contacts being arranged to form at least one independent open air cavity on the side of the forefoot of the shoe bottom; and    at least one ventilation hole in said upper midsole, to thereby provide ventilation to the interior of the shoe.    
     
     
         10 . A shoe bottom portion as set forth in  claim 9 , further comprising an insole formed above said upper midsole, said insole having at least one insole hole formed therein and wherein said midsole contains at least one ventilation hole associated with said at least one ventilation hole in said insole.  
     
     
         11 . A shoe bottom portion as set forth in  claim 9 , wherein said upper midsole and said lower midsole are adjoined.  
     
     
         12 . A shoe bottom portion as set forth in  claim 9 , wherein said upper midsole and said lower midsole each contain at least one concave form.  
     
     
         13 . A shoe bottom portion as set forth in  claim 9 , wherein said at least one upper midsole concave form is in correspondence with said at least one lower midsole concave form, to thereby form said at least one open air cavity.  
     
     
         14 . A shoe bottom portion as set forth in  claim 13 , wherein said open air cavity does not extend through the shoe bottom.  
     
     
         15 . A shoe bottom portion which provides ventilation to the interior of the shoe, comprising: 
 an upper midsole;    a lower midsole; and    a plurality of contacts of said upper midsole with said lower midsole, said contacts being arranged to form a plurality of independent open air cavities on the sides of the forefoot of the shoe bottom, to thereby provide ventilation to the interior of the shoe.    
     
     
         16 . A shoe bottom portion as set forth in  claim 15 , wherein said upper midsole contains at least one ventilation hole in said upper midsole.  
     
     
         17 . A shoe bottom portion as set forth in  claim 15 , further comprising an insole formed above said upper midsole, said insole having at least one insole hole formed therein and wherein said midsole contains at least one ventilation hole associated with said at least one ventilation hole in said insole.  
     
     
         18 . A shoe bottom portion as set forth in  claim 15 , wherein said upper midsole and said lower midsole are adjoined.  
     
     
         19 . A shoe bottom portion as set forth in  claim 15 , wherein said upper midsole and said lower midsole each contain at least one concave form.  
     
     
         20 . A shoe bottom portion as set forth in  claim 15 , wherein said at least one upper midsole concave form is in correspondence with said at least one lower midsole concave form, to thereby form said plurality of open air cavities.  
     
     
         21 . A shoe bottom portion as set forth in  claim 20 , wherein said plurality of open air cavities does not extend through the shoe bottom.