DEVICE FOR PRODUCING A HEAD ON A BEVERAGE

摘要

A device for generating a head on a liquid in a sealed and pressurized can, when the can is opened, comprising a hollow capsule (16) which initially floats on the liquid so that apertures (22, 24) in the capsule are initially disposed one above and one below the liquid level surface, liquid being drawn up into the container through the immersed aperture by an absorbat wick (28, 30) combining with ballast means (26) eventually to cause the capsule to at least partially invert and trap gas under pressure within the capsule, ready for release when the can is opened to issue through a small aperture as a fine jet into the liquid and bubble to the liquid surface.