Patent ID: 7767087

Claim:
A device for holding at least one liquid filter, said device comprising: an approximately round filter platform comprising at least one approximately round hole, sized to accommodate a two-inch diameter cylindrical replaceable carbon cartridge filter, wherein the filter platform is not rigidly affixed to a container containing liquid to be filtered, wherein the filter platform is adapted to provide a barrier between unfiltered liquid and filtered liquid, wherein the hole is disposed to engage said filter, and wherein the filter provides a path for a liquid to flow from a first side of the filter platform to a second side of the filter platform, such that the filtered liquid is human potable; a flexible membrane, wherein the flexible membrane is coupled to the filter platform, and is adapted to seal a gap between the filter platform and a container; a pressure relief valve, adapted to enable air to escape from beneath the second side of the filter platform; and at least one downward projection from the second side of the filter platform, wherein the downward projection is adapted to hold the filter platform above a floor of a container.