Patent ID: 6547162
Filing Date: 2003-04-15
Classification: B05B

Abstract:
A foam spraying apparatus for a liquid container comprising:(a) a first piston-and-cylinder unit for air, comprising a first cylinder and a first piston, the first unit having an inlet valve and an outlet valve; (b) a second piston-and-cylinder unit for liquid, comprising a second cylinder and a second piston, the second unit having an inlet valve and an outlet valve and cooperating with the first unit by a mutual coupling; (c) a mixing chamber for mixing air and liquid; and (d) a spraying head provided with a foam delivery opening, wherein the first cylinder and the second piston are interconnected to form an intermediate part and the second cylinder and the first piston are interconnected to form a base part, and wherein the intermediate part and the base part mesh and are moveable relative to each other.