Patent ID: 6405905
Filing Date: 2002-06-18
Classification: B05B

Abstract:
A dosing dispenser for flowable media with a pump that may be manually handled and is integrated in a medium container, comprising:an inner chamber (180; 280; 380; 480) for storing a medium, a piston (140; 240; 340; 440), which closes the container (110; 210; 310; 410) in a fluid-proof manner from the outside and which is slidingly movable in a guided manner between an upper position and a lower position within the container, a piston chamber (130; 230; 330; 430) being provided within the container bottom (120; 220; 320; 420) directly adjoining the inner chamber (180; 280; 380; 480) of the container and having an open upper end aligned to the piston, a connecting channel (150; 250; 350; 450), which extends within the piston in the sliding direction thereof and provides a fluid-communication to the outside of the container, a spring (160; 161; 260; 360; 460), which urges the piston into its upper position, a sealing means (123, 125; 211; 328,343; 428, 443), which seals the opening of the connecting channel (150; 250; 350; 450) directed to the inner chamber (180; 280; 380; 480) of the container (110; 210; 310; 410) as long as the piston (140; 240; 340; 440) is in its upper position, wherein the piston (140; 240; 340; 440), in its upper position, is situated at a distance from the piston chamber (130; 230; 330; 430) and, during its downwards movement in its lower position, immerses into the piston chamber and shuts off the adjoining inner chamber (180; 280; 380; 480) of the container (110; 210; 310; 410) from the piston chamber.