Patent ID: 6799701
Filing Date: 2004-10-05
Classification: B65D

Abstract:
In a packaging unit for storing and dispensing of liquids, fluid and ductile materials, having a cartridge for the material to be stored and a pressurized gas operating with it, and a dispensing head connected to the cartridge, comprisinga) a sliding piston (4) positioned within an internal chamber of said cartridge (2), b) said piston (4) divides the internal chamber of the cartridge (2) into a product chamber (3) and a pressurized gas chamber (5), and provides a gas-tight seal between said chambers, c) a plug (15) fitted into a gas chamber end of the cartridge (2) d) a valve means fitted to a product chamber end of the cartridge (2), wherein e) said valve means has a valve house (11), a valve stem (12) being movably arranged in the valve house (11), and a disc spring (14) having plate segments, and f) a discharge opening at an end of said valve stem (12) protruding from the cartridge (2), and comprising g) a conical part of said valve stem (12) being arranged in the product chamber (3) of the cartridge (2), wherein h) said plate segments of the disc spring (14) are pushed against the conical part of said valve stem (12), i) the disc spring (14) is snapped onto a valve house (11), and comprising j) at least one O-ring arranged between the valve house (11) and the valve stem (12), k) a cartridge house (6) fixed to l) an outer mantle of the valve house (11).