Ventilated shoe pad

Abstract

A ventilated insole including a pad ( 10 ) having a bladder ( 20 ), an air entry ( 30 ), an air exit ( 40 ), an entry conduit ( 50 ) interconnecting the air entry ( 30 ) and the bladder ( 20 ), an exit conduit ( 60 ) interconnecting the bladder ( 20 ) and the air exit ( 40 ), and two one-way valves ( 70 ) wherein one one-way valve ( 70 ) is at a joining portion of the bladder ( 20 ) and the entry conduit ( 50 ) and the other one-way valve ( 70 ) is at a joining portion of the bladder ( 20 ) and the exit conduit ( 60 ). Each of the entry conduit ( 50 ) and the exit conduit ( 60 ) has a triangular section so as to increase resistance, thereby facilitating air flow in the entry conduit ( 50 ) and the exit conduit ( 60 ) and planarizing the pad ( 10 ). The insole can be disposed in one of a variety of shoes and brings a degree of comfort to wearer.

What is claimed is: 
     
         1 . A planarized ventilated insole comprising:
 a pad ( 10 ) comprising an upper member ( 11 ) and a lower member ( 12 ) secured to the upper member ( 11 );   a bladder ( 20 ) disposed in the pad ( 10 );   an air entry ( 30 ) disposed in the pad ( 10 );   an air exit ( 40 ) disposed in the pad ( 10 );   an entry conduit ( 50 ) disposed in the pad ( 10 ) for interconnecting the air entry ( 30 ) and the bladder ( 20 );   at least one exit conduit ( 60 ) disposed in the pad ( 10 ) for interconnecting the bladder ( 20 ) and the air exit ( 40 ); and   two one-way valves ( 70 ) wherein one one-way valve ( 70 ) is disposed at a joining portion of the bladder ( 20 ) and the entry conduit ( 50 ) and the other one-way valve ( 70 ) is disposed at a joining portion of the bladder ( 20 ) and the at least one exit conduit ( 60 );   wherein the lower member ( 12 ) covers both the entry conduit ( 50 ) and the at least one exit conduit ( 60 ) from below;   wherein the upper member ( 11 ) comprises an upper opening ( 111 ) with an upward arched upper half of the bladder ( 20 ) fastened therein;   wherein the lower member ( 12 ) comprises a lower opening ( 121 ) with a downward arched lower half of the bladder ( 20 ) fastened therein; and   wherein each of the entry conduit ( 50 ) and the at least one exit conduit ( 60 ) has a triangular section so as to increase resistance to external force, thereby facilitating air flow in the entry conduit ( 50 ) and the at least one exit conduit ( 60 ) and planarizing the pad ( 10 ).   
     
     
         2 . The planarized ventilated insole of  claim 1 , wherein thickness of the pad ( 10 ) externally of the bladder ( 20 ) is in the range of about 2 cm to 5 cm. 
     
     
         3 . The planarized ventilated insole of  claim 1 , further comprising a plurality of equally spaced ribs ( 23 ) radially extending from a center of the bladder ( 20 ) to a periphery thereof wherein each of the ribs ( 23 ) has a longitudinal section of half circle having an area gradually increased from a first end at the center of the bladder ( 20 ) to a second end at the periphery of the bladder ( 20 ). 
     
     
         4 . The planarized ventilated insole of  claim 1 , further comprising a lengthwise arched ridge ( 51 ) disposed in the entry conduit ( 50 ) and a lengthwise arched ridge ( 61 ) disposed in the exit conduit ( 60 ) respectively. 
     
     
         5 . The planarized ventilated insole of  claim 1 , wherein the air exit ( 40 ) comprises a transverse exit groove ( 41 ) under the pad ( 10 ) and connecting to the exit conduit ( 60 ), and a plurality of exit apertures ( 42 ) in the exit groove ( 41 ) through the upper member ( 11 ), and wherein the air entry ( 30 ) is concave on a rear end of the pad ( 10 ). 
     
     
         6 . The planarized ventilated insole of  claim 5 , wherein each of the exit apertures ( 42 ) comprises an arched top ( 43 ). 
     
     
         7 . The planarized ventilated insole of  claim 1 , wherein the bladder ( 20 ) comprises two channels ( 21 ) at an edge, each channel ( 21 ) having one of the one-way valves ( 70 ) disposed therein and including a well ( 22 ) vertically provided in the channel  21 ; wherein each of the one-way valves ( 70 ) comprises a divider plate ( 71 ), adapted to be sealingly fastened in the well  22 , including a through hole ( 711 ), and a flap ( 72 ) including a hinge ( 73 ) secured to the divider plate ( 71 ); and wherein the flap ( 72 ) is vertical to close the through hole ( 711 ) when no force is exerted on the bladder ( 20 ). 
     
     
         8 . The planarized ventilated insole of  claim 1 , wherein the bladder ( 20 ) comprises two tunnels ( 24 ) each having an oval longitudinal section for disposing one of the one-way valves ( 70 ) therein; wherein each of the one-way valves ( 70 ) comprises an outer sleeve ( 74 ) including a lengthwise slit ( 741 ) on an outer surface and having a first end open to the bladder ( 20 ) and a second end formed with a through hole ( 75 ), an inner sleeve ( 76 ) of an oval longitudinal section, the inner sleeve ( 76 ) including a lengthwise ridge ( 761 ) on an outer surface, the ridge ( 761 ) being inserted into the slit ( 741 ) for assembling the outer and inner sleeves ( 74 ,  76 ), and a flap ( 77 ) pivotably secured to a first end of the inner sleeve ( 76 ), the flap ( 77 ) being vertical to close the through hole ( 75 ) when no force is exerted on the bladder ( 20 ). 
     
     
         9 . A planarized ventilated insole comprising:
 a pad ( 10 A);   an air entry ( 30 ) disposed in the pad ( 10 A); and   an air exit ( 40 ) disposed in the pad ( 10 A);   wherein the pad ( 10 A) comprises an upper member ( 11 A), an upward arched upper element ( 111 A) integrally formed with the upper member ( 11 A), a lower member ( 12 A) secured to the upper member ( 11 A), and a downward arched lower element ( 121 A) integrally formed with the lower member ( 12 A) wherein the upper and lower elements ( 111 A,  121 A) are attached together to form a bladder.   
     
     
         10 . The planarized ventilated insole of  claim 9 , further comprising a plurality of spaced ribs ( 13 A) radially extending from a center of the upper element ( 111 A) to a periphery thereof, each of the ribs ( 13 A) being of a longitudinal section of half circle and having an area gradually increased from a first end at the center of the upper element ( 111 A) to a second other end at the periphery thereof; and a plurality of spaced ribs ( 14 A) radially extending from a center of the lower element ( 121 A) to a periphery thereof, each of the ribs ( 14 A) being of a longitudinal section of half circle and having an area gradually increased from a first end at the center of the lower element ( 121 A) to a second other end at the periphery thereof.