Patent ID: 6113001
Filing Date: 2000-09-05
Classification: B05B,B67D

Abstract:
A liquid supply apparatus comprising:a liquid supply conduit having rigid walls and an open end which, when in use, is immersed in a liquid to be supplied,an expandable chamber in pressure-transmitting relation to an interior volume of said conduit and operable to provide interior volume change between said chamber and said open end of said conduit,a valve between at least one of the interior volume of said conduit and said chamber and the ambient atmosphere that is operable to open and close and, when open, allows at least air or other gases to be admitted into or exhausted from said interior volume and, when closed, prevents such admission or exhaustion, wherein,the expandable chamber is mechanically linked to the valve so that expansion of the interior volume of said chamber, or the expansion of that volume and subsequent coming to rest from that expansion, maintains the valve in a closed state, and includingat least one of a liquid receiving and dispensing means in fluid contact with part of the interior volume of said conduit between the expandable chamber and the open end of said conduit.