CONTAINER FOR PRESSURIZED LIQUIDS WITH FOAM GENERATING DEVICE

摘要

A sealed, openable, pressurised liquid container comprises a bottle B partly filled with liquid to provide a headspace (22). A foam-promoting device D floats on the liquid in the bottle. The device D comprises a hollow body (10) having first and second tubes (12 and 14). The first tube (12) has an upper end in communication with the exterior of the hollow body via a restricted orifice (16) disposed in the headspace (22) in the bottle, and a lower end in communication with the interior of the hollow body (10). The second tube (14) has a lower end in communication with the exterior of the hollow body via a restricted orifice (18) disposed below the surface of the liquid (20) in the bottle B, and an upper end in communication with the interior of the hollow body (10). The lower end of the first tube (12) is disposed at a lower level than the upper end of the second tube (14). The device D is partly filled with liquid (24) to a level intermediate the levels of the lower end of the first tube (12) and the upper end of the second tube (14) so that the lower end of the first tube (12) is submerged in the liquid (24) in the device D and the upper end of the second tube (14) is disposed above the level of the liquid (24) in the device D.