Portable water bottle assembly having a replaceable filter cartridge

A portable bottle for filtering drinking water comprising:

• a) a bottle having an externally threaded opening;
• b) a cover for cooperating with the externally threaded opening of the bottle and including a top wall and a circumferential side wall, the top wall of the cover having a central aperture formed therein and having a plurality of circumferentially spaced apart internal engagement lugs depending downwardly from an interior surface of the top wall, the circumferential side wall of the cover having an interior thread formed therein for cooperating with the externally threaded opening of the bottle;
• c) a replaceable filter cartridge including a cylindrical filter element and an end cap, the filter element having an outer periphery and an axial inner bore, the end cap of the filter cartridge having an upper surface with an upwardly extending central outlet sleeve communicating with the inner bore of the filter element and a circumferential side wall having a plurality of circumferentially spaced apart engagement ribs for cooperating with the circumferentially spaced apart engagement lugs of the cover;
• and
• d) a spout having a nipple configured to extend through the central aperture in the cover and adapted to receive the outlet sleeve of the end cap of the filter cartridge, the spout further including a compressible circumferential flange surrounding the nipple and configured to be positioned between the interior surface of the top wall of the cover and the upper surface the end cap of the filter cartridge to provide a resilient biasing force therebetween, that promotes the cooperative retention of the engagement lugs of the cover below the engagement ribs of the end cap.

A portable bottle for filtering drinking water comprising:

• a) a bottle having an opening;
• b) a cover for the opening of the bottle including a top wall having a plurality of engagement lugs depending downwardly therefrom;
• c) a filter cartridge including an end cap having a circumferential side wall that includes a plurality of engagement ribs for cooperating with the engagement lugs of the cover;
• and
• d) a compressible flange positioned between the top wall of the cover and the end cap of the filter cartridge to provide a resilient biasing force therebetween.