Patent ID: 6843368
Filing Date: 2005-01-18
Classification: A61J,B65D

Abstract:
1. An apparatus for introducing an additive material into a first liquid, the apparatus comprising: a first container for holding the first liquid having an opening closed by a releasable closure, a second container positioned in the first container and containing propellant fluid at a pressure greater than atmospheric pressure, and a tubular conduit having a first end communicating with the second container and a second end communicating with the first container; wherein the conduit contains an additive material adapted to be expelled from the conduit into the first liquid by the entry of the propellant fluid into the conduit on release of the releasable closure; wherein the conduit is provided with a first valve adjacent to its second end, the first valve being adapted to prevent the passage of said additive material into said first liquid when the pressure in said conduit is equal to the pressure in said first liquid, and the first valve being adapted to permit the passage of said additive material into said first liquid when the pressure in said conduit is greater than the pressure in said first liquid; and wherein the second container has a bleed hole in communication with the first container adapted to permit the pressure in the second container and the first container to reach equilibrium over a period of time.