Patent ID: 6299024
Filing Date: 2001-10-09
Classification: B65D

Abstract:
A mixing valve assembly for a container structure, the container structure having a first chamber for storing a primary composition; a second chamber for storing a secondary composition; and a dispensing member for urging the primary composition from the first chamber and the secondary composition from the second chamber, comprising:a valve housing extending along a longitudinal axis and defining a flow chamber, the valve housing including a first opening in communication with the first chamber, a second opening in communication with the second chamber, and a third opening communicating with the environment external of the container structure;a first seal disposed in the second opening in the valve housing for isolating the second chamber from the flow chamber;a second seal disposed in the third opening in the valve housing for isolating the flow chamber from the environment external of the container structure;a valve stem extending along the longitudinal axis through the first and second seals and having a central passageway therethrough, the valve stem having an inlet, an outlet external of the container structure, and a mixing opening therebetween, the valve stem movable between a first position wherein the inlet is closed by the first seal and wherein the mixing opening is closed by the second seal and a second depressed position wherein the inlet is in communication with the second chamber and the mixing opening is in communication with the flow chamber; anda generally concave biasing structure formed as a unitary one-piece construction with the valve stem and extending therefrom for urging the valve stem into the first position.