Air cushion with multistage shock-absorbing assembly and fabricating method

Abstract

An air cushion connected at least a cushioning element in a vertical stack configuration for absorbing both lighter and heaver heel impacts sequentially in a shoe mid-sole. The air cushion includes a first air bladder and a cushioning element forming a vertical stack configuration such that when the impact lighter than a predetermined value is applied to the vertical stack configuration, it is absorbed by deforming the first air bladder only, and when the impact heavier than the predetermined value is applied to the vertical stack configuration, it is absorbed by deforming both the first air bladder and the cushioning element.

1 . An air cushion for cushioning in a shoe with multistage shock-absorbing assembly, comprising:
 a first air bladder, having an inner wall which contains a first inner pressure, the inner wall having an upper surface and a lower surface;   a tying element, having an upper side which is connected to the upper surface of the inner wall of the first air bladder, and a lower side; and   a cushioning element, having an upper side connected to the lower side of the tying element and a lower side connected to the lower surface of the inner wall of the first air bladder, thereby forming a vertical stack configuration for absorbing heel impact in a mid-sole sequentially, such that when the impact lighter than a predetermined value is applied to the vertical stack configuration, it is absorbed by deforming the first air bladder only, and when the impact heavier than the predetermined value is applied to the vertical stack configuration, it is absorbed by deforming both the first air bladder and the cushioning element.   
     
     
         2 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 1 , wherein the cushioning element comprises a resilient pad. 
     
     
         3 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 2 , wherein the tying element comprises a plurality of inward protruding walls disposed between the upper surface of the inner wall of the first air bladder and the upper side of the cushioning element for keeping the first air bladder in a predetermined shape. 
     
     
         4 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 1 , wherein the tying element comprises a pile of yarns, fabric or fibers which is glued between the first air bladder and the cushioning element, for keeping the first air bladder in a predetermined shape. 
     
     
         5 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 1 , further comprising an upper frame and a base frame for fixing the first air bladder therebetween. 
     
     
         6 . The air cushion with multistage shock-absorbing assembly of  claim 1 , wherein the cushioning element comprises a second air bladder which contains a second inner pressure. 
     
     
         7 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 6 , wherein the second air bladder contains a tying element formed with a plurality of inward protruding walls for keeping the second air bladder in a predetermined shape thereof. 
     
     
         8 . An air cushion for cushioning in a shoe with multistage shock-absorbing assembly, comprising:
 a first air bladder, having an inner wall which contains a first inner pressure, the inner wall having an upper surface and a lower surface; and   a cushioning element, disposed in relation to the first air bladder to form a vertical stack configuration therewith such that when the impact lighter than a predetermined value is applied to the vertical stack configuration, it is absorbed by deforming the first air bladder only, and when the impact heavier than the predetermined value is applied to the vertical stack configuration, it is absorbed by deforming both the first air bladder and the cushioning element.   
     
     
         9 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 8 , wherein the cushioning element is a second air bladder which contains a second air pressure. 
     
     
         10 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 9 , further including a resilient pad disposed on the upper side of the first air bladder. 
     
     
         11 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 8 , wherein the cushioning element comprises a second air bladder and a resilient pad. 
     
     
         12 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 8 , wherein the cushioning element is a resilient pad. 
     
     
         13 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 8 , wherein the cushioning element is a bladder containing a gel. 
     
     
         14 . The air cushion for cushioning in a shoe with multistage shock-absorbing assembly of  claim 8 , wherein the cushioning element is a bladder containing a granules cushioning material.