Multi-function ventilated insole

Abstract

A multi-function ventilated insole is provided with an elastic airbag disposed within a heel and including upper and bottom layer sections; a check valve on the rear of the elastic airbag; two spaced channels each extending from the elastic airbag to a plantar arch portion, each channel including vent holes disposed from a front end to an intermediate portion, and a rear concealed tunnel extending to communicate with one outlet; a flexible main support in the top layer section; two spaced flexible auxiliary supports in the top layer section and contacting both sides of the main support; recesses on top of a front portion of the insole, each recess having a knob; a curve protrusion on the insole; a protuberance on the insole between the front ends of the channels; and a cavity on the insole between the protrusion and the protuberance.

What is claimed is: 
     
         1 . A multi-function ventilated insole comprising:
 an elastic airbag disposed on the heel of the insole and including an top layer section, a bottom layer section and an air chamber forming between the top layer section and the bottom layer section;   a check valve disposed on the rear of the elastic airbag and communicating with the air chamber;   two outlets formed on the front of the elastic airbag and communicating with the air chamber;   two spaced channels each extending from the elastic airbag to a plantar arch portion;   a flexible main support disposed in the air chamber and connected to both the top layer section and the bottom layer section;   two spaced flexible auxiliary supports disposed in the air chamber and connected to both the top layer section and the bottom layer section and forming on one side of the flexible main support respectively;   a plurality of recesses disposed on top of a front portion of the insole;   wherein in response to a wearer's foot stepping on the insole, the main support, the auxiliary supports, and the elastic airbag are compressed, pressure of air in the air chamber increases to close the check valve, and draw the air from the air chamber to the vent holes via the outlet and the channels, thereby expelling the air; and   wherein in response to the wearer's foot lifting the insole, the main support, the auxiliary supports, and the air chamber return to its original shape, draw atmospheric air into the air chamber via the check valve, and draw air above the insole into the air chamber via the vent holes, the channels and the outlet.   
     
     
         2 . The multi-function ventilated insole of  claim 1 , wherein the top layer section of the heel and the bottom layer section of the heel are formed integrally of a flexible material but having a different hardness. 
     
     
         3 . The multi-function ventilated insole of  claim 2 , wherein the top layer section has a hardness of 30-35, and the bottom layer section has a hardness of 50-55, both are formed as a dual density unit. 
     
     
         4 . The multi-function ventilated insole of  claim 2 , further comprising an integral inlet formed on the rear of the elastic airbag and communicating with the check valve. 
     
     
         5 . The multi-function ventilated insole of  claim 1 , wherein each of the outlet are connected to one of the channels extending toward a toe of the shoe. 
     
     
         6 . The multi-function ventilated insole of  claim 5 , wherein each of the channels includes a rear concealed tunnel extending to communicate with one of the outlet, and a plurality of vent holes disposed from a front end to an intermediate portion. 
     
     
         7 . The multi-function ventilated insole of  claim 1 , further comprising a plurality of recesses formed on top of a front portion of the insole corresponding to the toes of the foot of a wearer, and a cavity formed on the top of the insole corresponding to the plantar arch of the foot of the wearer. 
     
     
         8 . The multi-function ventilated insole of  claim 7 , wherein each of the recesses has a knob on a central portion of its top, and a protrusion formed on the top of the insole between proximate to the recesses and the cavity. 
     
     
         9 . The multi-function ventilated insole of  claim 8 , further comprising a plantar arch portion on each of both sides of the insole, and a protuberance formed on the top of the insole between the plantar arch portions. 
     
     
         10 . The multi-function ventilated insole of  claim 2 , wherein the bottom layer section of the heel is formed as an outer of insole