Stopper for pressurised bottle - has flexible delivery duct with fixed finger releasably closing valve

摘要

The container stopper has an outer cover (4) held by an internal ring (9) fitting in a groove (3) in the bottle neck. The stopper has an internal sleeve (13) with rings (14) which fit and seal off the end of the container. The stopper has an external finger (4) which contains a valve (16) held on the shoulder of the ring (17). The valve is closed by the plug (19). The top end of the valve sits inside the finger and the plug (19) fits inside the hole (12). The valve is opened by moving the finger sideways.