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 may be an air bladder with tying element, resilient pad or the combination thereof The fabrication method of the present invention includes the steps of blowing a melting inflatable bladder or tube together with a cushioning element in a blowing mold, inflating the melting inflatable bladder with air in high pressure, so as to form a bladder with a passage way that confirming the inner shape of the blowing mold, and blowing air into the bladder in a preset pressure; and thereafter sealing the passage way for forming an air cushion with multistage shock-absorbing assembly.

1 . An air cushion with multistage shock-absorbing assembly, comprsing:
 a first air bladder, having an inner wall which contains a first inner pressure;   a tying element, having an upper side which is connected to the inner wall of the first air bladder; and   a cushioning element, having an upper side connected to the tying element and a lower side connected to the inner wall of the first air bladder, thereby to form a vertical stack configuration for absorbing heel impact in a mid-sole sequentially.   
     
     
         2 . The air cushion with multistage shock-absorbing assembly of  claim 1 , wherein the cushioning element is a resilient pad. 
     
     
         3 . The air cushion with multistage shock-absorbing assembly of  claim 2 , wherein the tying element is a plurality of inward protruding walls formed on the inner wall of the first air bladder, connected to the upper side of the cushioning element for keeping the first air bladder in a predetermined shape. 
     
     
         4 . The air cushion with multistage shock-absorbing assembly of  claim 1 , wherein the tying element is 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 with multistage shock-absorbing assembly of  claim 1 , further comprising a 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 is a second air bladder which contains a second inner pressure. 
     
     
         7 . The air cushion 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 with multistage shock-absorbing assembly, comprising:
 a first air bladder, having an upper side and a lower side, and containing a first inner pressure therein; and   a cushioning element, having an upper side connected to the lower side of first air bladder, thereby to form a vertical stack configuration for absorbing heel impact in a mid-sole.   
     
     
         9 . The air cushion 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 with multistage shock-absorbing assembly of  claim 9 , further including a resilient pad connected on the upper side of the first air bladder. 
     
     
         11 . The air cushion 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 with multistage shock-absorbing assembly of  claim 8 , wherein the cushioning element is a resilient pad. 
     
     
         13 . The air cushion with multistage shock-absorbing assembly of  claim 8 , wherein the cushioning element is a bladder containing a gel. 
     
     
         14 . The air cushion with multistage shock-absorbing assembly of  claim 8 , wherein the cushioning element is a bladder containing a granules cushioning material. 
     
     
         15 . A method for fabricating an air cushion with multistage shock-absorbing assembly, comprising the steps of:
 inserting a melting inflatable tube and a cushioning element in a blowing mold;   inflating the melting inflatable tube with an air in high pressure, so as to form a first bladder with a passage way that confirming the inner shape of the blowing mold; and   blowing air into the bladder in a first inner pressure; and thereafter sealing the passage way for forming an air cushion which connects the cushioning element on one side thereof.   
     
     
         16 . The method of  claim 15 , wherein the melting inflatable tube is formed with a first inner side and a second inner side, and the steps of the method further include a step of connecting the cushioning element on the second inner side of the melting inflatable tube. 
     
     
         17 . The method of  claim 16 , wherein the steps further include connecting a second air bladder and a resilient pad to form as the cushioning element before connecting the cushioning element on the second inner side of the melting inflatable tube. 
     
     
         18 . The method of  claim 15 , wherein the first bladder has an upper side and a lower side, and the steps of the method further include a step of connecting the cushioning element on the lower side of the first bladder. 
     
     
         19 . The method of  claim 18 , wherein the steps further include connecting a second air bladder and a resilient pad to form as the cushioning element before connecting the cushioning element on the lower side of the first bladder.