Backpack with an air cushion

Abstract

A backpack has at least one air cushion and a backpack structure. At least one strap is mounted on the backpack structure and the air cushions are mounted onto the strap and backpack structure. The air cushion is mounted with a bladder having an air valve and an inflating device. A person uses the inflating device to add air into the bladder that is then capable of cushioning impacts by the bag and providing a perfect fit to the person. Accordingly, the backpack volume is minimized by pressing the air valve to discard the air and is convenient for storing.

1 . A backpack comprising
 a backpack structure having
 a top; 
 a bottom; 
 a surface; 
 a back support; 
   at least one strap each one having two ends respectively connecting to the top and bottom of the backpack structure; and
 at least one inner space defined in the backpack structure; and 
   at least one air cushion mounted respectively in the at least one inner space, and each one of the at least one air cushion having
 a bladder mounted in a corresponding inner space; 
 an inflating device connected to the bladder and having an outlet valve connected to the bladder and an inlet valve with an open end extending into the corresponding inner space; and 
 an air valve mounted on the bladder. 
   
   
   
       2 . The backpack as claimed in  claim 1 , wherein the backpack structure has at least one inner space formed in each respective one of the back support and the at least one strap and multiple air cushions being mounted in the inner spaces in the back support and the at least one strap. 
   
   
       3 . The backpack as claimed in  claim 1 , wherein the inflating device of each one of the at least one air cushion is a pump. 
   
   
       4 . The backpack as claim in  claim 1 , wherein the air valve of each one of the at least one air cushion is extended out the surface of the backpack structure. 
   
   
       5 . The backpack as claimed in  claim 1 , wherein the backpack structure further has a waist belt connecting to the bottom of the backpack structure and being adapted to be fastened around a user for adding stability. 
   
   
       6 . The backpack as claimed in  claim 1 , wherein each one of the at least one air cushion is shaped corresponding to a shape where the air cushion being mounted. 
   
   
       7 . The backpack as claimed in  claim 1 , wherein the backpack structure has at least two air cushions mounted at the top and the bottom of the backpack structure. 
   
   
       8 . The backpack as claimed in  claim 7 , wherein the at least two air cushions mounted at the top and bottom are connected with a connecting tube. 
   
   
       9 . The backpack as claimed in  claim 2 , wherein the inflating device of each air cushion is a pump. 
   
   
       10 . The backpack as claimed in  claim 2 , wherein the backpack structure further has a waist belt connecting to the bottom of the backpack and adapted to fasten around a user for added stability. 
   
   
       11 . The backpack as claimed in  claim 2 , wherein the air valve of each air cushion extending out of a corresponding of the at least one strap and the back support of the back structure. 
   
   
       12 . The backpack as claimed in  claim 2 , wherein the backpack structure has at least two air cushions mounted at the top and bottom. 
   
   
       13 . The backpack as claimed in  claim 2 , wherein the inner spaces in the at least one strap and the back support of the backpack structure are independent to each other. 
   
   
       14 . The backpack as claimed in  claim 4 , wherein the at least one air cushion is shaped corresponding to the shape where it being mounted. 
   
   
       15 . The backpack as claimed in  claim 4 , wherein the air valve of the bladder of the at least one air cushion extending out of the at least one strap and the back support of the back structure. 
   
   
       16 . The backpack as claimed in  claim 4 , wherein the backpack structure has at least two air cushions mounted respectively at the top and the bottom of the backpack structure. 
   
   
       17 . The backpack as claimed in  claim 4 , wherein the inflating device of each one of the at least one air cushion is a pump.