Two-chamber liq. dispenser with integrated, sealed dosage regulator

摘要

The invention concerns a tubular two-chamber liquid metering device (1) for leaktight insertion into a container opening (3). The metering device (1) comprises a cylindrical wall (5) with a closed base (6) and a cover (7) which is provided with a passage for a pouring duct (8). The wall (5) has at least one opening (14) in the region of the cover (7) and at least one further opening (13) is located on a peripheral line between the opening (14) and the base (6). Disposed in the outer cylindrical chamber defined by the wall (5), the base (6) and the cover (7) is a tubular body (10) which at one end is connected in a leaktight manner to the pouring duct (8) and at its other end maintains a distance from the base (6). The tubular body (10) has at least one opening (12) on a peripheral line in the region of the connection to the pouring duct (8). A freely movable body (11) with a circular cross-section is provided in the main metering chamber (19') defined by the inner cylinder (10) between the opening (12) and the base (6). The invention further concerns a method of metering liquids by means of a chamber metering device in which a free body is provided in the metering chamber in order to close a pouring duct. The volume of the free body is such that the free volume remaining in the metering chamber corresponds to the amount of liquid to be metered.