Patent ID: 6290848
Filing Date: 2001-09-18
Classification: C02F

Abstract:
A filter cartridge for a gravity-fed water treatment device, comprising:a hydrophilic porous particulate filter having an open upper end, a lower end, and sidewalls therebetween, the hydrophilic porous particulate filter defining an interior volume free from porous particulate filter media;granular filter media disposed in the interior volume; anda connecting member sealing said hydrophilic porous particulate filter to a portion of the filter cartridge proximate said upper end of said filter;wherein the filter cartridge is configured and arranged to establish, with a pressure of about 0.5 lb/in.sup.2, more than an insubstantial flow rate to allow water to flow by force of gravity through said open upper end, into said interior volume, and through said sidewalls of said hydrophilic porous particulate filter.