Patent ID: 7886899
Filing Date: 2011-02-15
Classification: B65D

Abstract:
1. A closure device assembled prior to fitting to a container, the container having a main liquid compartment and an opening with a neck, the assembled closure device comprising a cap member defining a pressurised fluid chamber containing an additive liquid and a housing having a plug member sealingly engageable in an aperture in a bottom wall of the fluid chamber, the plug member including a nozzle directed away from the fluid chamber, wherein the cap member is provided with a primary engagement means which engages with a corresponding primary engagement means provided on the housing to allow the cap member to be lifted relative to the housing from a closed position in which the plug member closes the aperture to an open position in which the plug member is at least partially withdrawn from the aperture to provide a communication path in use from the fluid chamber through the nozzle to the main liquid compartment.