Patent ID: 7832590

Claim:
An insert adapted to be mounted in a multi-component container to hold one of the components of the container, comprising: a one piece body having a reservoir and a valve member, said reservoir having a stationary segment and an expandable segment, said expandable segment having a plurality of annular fold lines of opposite sense, rotation about said fold lines providing a contracted state and an expanded state, said expandable segment having a discharge passage, said valve member engageable with said discharge passage when said expandable segment is in its contracted state, thus providing a closed state for said discharge passage, said valve member and said discharge passage in said closed state providing a one way gas leakage path into said reservoir, said valve member and said discharge passage disengaging when said expandable segment moves into its expanded state, thus providing an open state for said discharge passage, whereby assembly of said insert containing one of the components and in said closed state into a container permits leakage of gas from a higher pressure area outside said reservoir through said gas leakage path into said reservoir to provide increased pressure inside said reservoir, and whereby subsequent removal of gas pressure from the exterior of said reservoir will cause the increased pressure in said reservoir to expand said expandable segment into its expanded state and provide said open state for said discharge passage, thus causing the component in said reservoir to be expelled into the rest of the container.