Device for storing liquid

Abstract

A device for storing liquid comprises a housing having side walls, an inner cavity wherein said housing comprises two unequal vertical parts and is designed to prevent said liquid being spilled and to revert to the vertical position when the vertical symmetry axis of said device leaves the original. The center of mass of said device filled with said liquid is at the bottom of said housing, lower than the geometrical center of said device. The lower outer surface of said housing is convex and is a sphere segment. The upper part of said walls of said housing is bent towards said inner cavity to form a central aperture for filling and emptying said inner cavity such that said liquid stored in said inner cavity cannot be spilled when said device leaves the vertical.

What is claimed is: 
     
         1 . A device for storing liquid comprising a housing having side walls, an inner cavity, wherein said housing comprises two unequal vertical parts and is designed to prevent said liquid being spilled and to revert to the vertical position when the vertical symmetry axis of said device leaves the original position by an angle of 10°-75°, the center of gravity of said device filled with said liquid being at the bottom of said housing, lower than the geometrical center of said device, wherein the lower outer surface of said housing is convex and made in the form of the sphere segment, the diameter of which is equal to the distance between the outer sides of said housing, wherein the upper part of said walls of said housing is bent towards said inner cavity, wherein the upper part of said walls of said housing form a central aperture for filling and emptying said inner cavity such that said liquid stored in said inner cavity cannot be spilled when said device leaves the vertical line. 
     
     
         2 . The device of  claim 1 , wherein said device is provided with at least one handle on the outer surface of the housing. 
     
     
         3 . The device of  claim 1 , wherein said housing is made of plastic. 
     
     
         4 . The device of  claim 1 , wherein said housing is made of metal. 
     
     
         5 . The device of  claim 1 , wherein said the lower part of said housing is made of metal. 
     
     
         6 . The device of  claim 1 , wherein the upper part of said housing is made of plastic. 
     
     
         7 . The device of  claim 1 , wherein the upper part of the walls is bent towards said inner cavity at no more than 2 cm. 
     
     
         8 . The device of  claim 1 , wherein the upper and lower parts of said housing are detachable. 
     
     
         9 . The device of  claim 8 , wherein the upper and lower parts of said housing are attached to each other with snaps 
     
     
         10 . The device of  claim 8 , wherein the upper and lower parts of said housing are attached to each other by a threaded coupling. 
     
     
         11 . The device of  claim 2 , wherein said handle on the outer surface of the housing is designed to not to allow the device to be inclined at an angle of larger than 76°. 
     
     
         12 . The device of  claim 1 , said device is provided with a cap tightly closing the central aperture between the upper walls.