An expandable bag and a method for the expanding of bags

Abstract

The invention relates to a device for storing and carrying content, which can be expanded to provide additional storing space therein, comprising: at least one expanding wall such that the boundary of the device occupies a smaller volume before it is expanded, than after its expansion; restricting elements positioned inside said walls; an expansion mechanism; and carrying-aid accessories; wherein said restricting elements prevent uneven inflation along said walls and against excessive inflation of said walls.

1 . A device for storing and carrying content, which can be expanded to provide additional storing space therein, comprising:
 a) at least one inflatable wall, which enables the expansion of the device, such that the boundary of the device occupies a smaller volume before it is expanded, than after its expansion.   b) restricting elements positioned inside said inflatable walls and in contact with both inner sides thereof;   c) an expansion mechanism; and   d) carrying-aid accessories;   wherein said restricting elements prevent uneven inflation along said walls and against excessive inflation of said walls.   
     
     
         2 . A device according to  claim 1 , wherein the device is in the shape of a briefcase. 
     
     
         3 . A device according to  claim 1 , wherein the device is in the shape of a suitcase. 
     
     
         4 . A device according to  claim 1 , wherein the expansion process is performed by inflation. 
     
     
         5 . A device according to  claim 1 , wherein the expansion mechanism comprises a pump. 
     
     
         6 . A device according to  claim 5 , wherein the pump is integral with a carrying handle. 
     
     
         7 . A device according to  claim 5 , wherein the pump is manual. 
     
     
         8 . A device according to  claim 5 , wherein the pump is electric or hydraulic. 
     
     
         9 . A device according to  claim 1 , wherein the expanding walls surround the whole storage space. 
     
     
         10 . A device according to  claim 1 , wherein not all of the walls are expandable. 
     
     
         11 . A device according to  claim 10 , wherein shelves are placed between the expanded walls. 
     
     
         12 . A device according to  claim 11 , wherein the shelves are built-in. 
     
     
         13 . A device according to  claim 1 , wherein the carrying-aid accessories are wheels. 
     
     
         14 . A device according to  claim 1 , wherein the carrying-aid accessories are handles. 
     
     
         15 . A device according to  claim 1 , further comprising a pressure regulator. 
     
     
         16 . A device according to  claim 1 , wherein the restricting means are fibers. 
     
     
         17 . A device according to  claim 1 , wherein the restricting elements are made of polyester. 
     
     
         18 . A device according to  claim 1 , wherein the restricting elements are made of a plastic material. 
     
     
         19 . A device according to  claim 1 , wherein the restricting elements are made of nylon. 
     
     
         20 . A device according to  claim 1 , wherein the restricting elements comprise a hive-shaped grid. 
     
     
         21 . A method for storing and carrying content, using an expanded device that allows additional storing space after the expansion, comprising: providing at least one inflatable wall, which enables the expansion of the device, an expansion mechanism, restricting elements positioned inside said inflatable walls and in contact with both inner sides thereof, and carrying-aid accessories.