Patent ID: 8141730
Filing Date: 2012-03-27
Classification: B65D

Abstract:
1. A closure for a multiple component container including an insert, a piston and a cap, the insert and the piston defining a reservoir and the insert comprising a fixed cylindrical wall and a moveable wall connected thereto and moveable with respect thereto by the action of gas pressure within the reservoir, the moveable wall having a discharge aperture formed therein, the cap comprising a closure plate, integral with whose outer edge is a depending skirt by means of which the cap may be secured to a container, the closure plate cooperating with the piston such that movement of the closure plate towards the insert results in movement of the piston also in the same direction, the piston forming a sliding seal with the internal surface of the fixed cylindrical wall, and a valve member which is integral with the piston and is slideably received in and seals the discharge aperture.