Patent ID: 6640999
Filing Date: 2003-11-04
Classification: B05B

Abstract:
A dosing pump for dispensing two or more liquids, gels, slurries and/or pastes and adapted to be connected to two or more containers for said two or more liquid, gel, slurry and/or paste, which comprises an operating button, and two or more liquid, gel, slurry and/or paste dispensing assemblies, each liquid, gel, slurry and/or paste dispensing assembly comprising an actuator, wherein each actuator is in mechanical contact with said operating button and is simultaneously or nearly simultaneously actuated by movement of said operating button, wherein each liquid, gel, slurry and/or paste dispensing assembly further comprises:a) a dispensing element; b) a cylindrical chamber in flow communication with the dispensing element; c) a piston or bellows sealingly and slidably mounted within said cylindrical chamber; having a stroke for motion between a rest position and a dispensing position at corresponding opposite rest and dispensing ends of the stroke;d) an inlet valve means in fluid connection with an outlet valve means, wherein said inlet valve means is in fluid connection with a container; and wherein said outlet valve means is in fluid connection with said dispensing element; and wherein said inlet valve means and said outlet valve means are embedded in one or more plates situated between said corresponding container and said cylindrical chamber; wherein said inlet valve means is in open position and said outlet valve means is in closed position when said piston or bellows is urged in the direction of the rest position, thereby providing fluid communication between said inlet valve means, said cylindrical chamber and said container; thereby drawing by vacuum pressure liquid, gel, slurry and/or paste from said corresponding container to said corresponding cylindrical chamber;and wherein said inlet valve means is in closed position and said outlet valve means is in open position when said piston or bellows is urged in the direction of the dispensing position, thereby providing fluid communication between said cylindrical chamber, said outlet valve means and said dispensing element;thereby dispensing liquid or paste from said dispensing element by mechanical force.