Patent ID: 7086430

Claim:
A feed tube for use in a delivery system for transferring potable liquid from an inverted container to a reservoir, the inverted container having a generally cylindrical depending neck, with a cap having an outer wall surrounding at least a portion of said neck and an internal sleeve located within the neck and joined to the outer wall by a connecting wall, the internal sleeve defining a recess for receiving the feed tube, and a frangible seal being secured to the connecting wall of the cap to cover the recess prior to insertion of the feed tube, said feed tube including a feed tube wall containing a flow path for delivering liquid from the inverted container to a reservoir, and said feed tube wall further containing one or more air passages for supplying air to the container to replace liquid removed therefrom, said feed tube carrying a head supported above said feed tube wall, said head having an uppermost end face which is provided with at least one row of upwardly-projecting puncturing elements.