Patent ID: 7955501

Claim:
A device for filtering liquids, 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, and wherein the filter provides a path for a liquid to flow, under force of gravity, 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; 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, wherein the filter platform is buoyant in the liquid, and wherein the filter platform is configured to float upward as the liquid passes through the filter.