Patent ID: 6197193
Filing Date: 2001-03-06
Classification: C02F

Abstract:
A water filter used for treating tap water from a water supply, the water filter comprising:a cylindrical hollow filter cartridge having a water inlet and a water outlet at opposite ends of said cartridge, said cartridge adapted for receiving the tap water to be treated therethrough;a first filter pad, said first filter pad located directly downstream from the water inlet, said first filter used to remove large solids and sediments;a layer of a granulated zinc and copper alloy received inside said cartridge, said layer of granulated zinc and copper alloy being located directly downstream from said first filter pad, said layer of granulated zinc and copper alloy used for removing chlorine and heavy metals as well as reducing bacteria in the water;a second filter pad, said second filter pad located directly downstream from said layer of granulated zinc and copper alloy, said second filter pad used for screening out small and fine sediments and particles in the water;a first layer of granulated activated carbon received inside said cartridge, said first layer of granulated activated carbon located directly downstream from said second filter pad, said first layer of granulated activated carbon used for removing chlorine, odor and color as well as organic contaminants;a third filter pad, said third filter pad located directly downstream from said first layer of granulated activated carbon, said third filter pad used for screening out small and fine sediments and particles in the water;a layer of ion exchange resin received inside said cartridge, said layer of ion exchange resin located directly downstream from said third filter pad, said layer of ion exchange resin used for removing lead;a fourth filter pad, said fourth filter pad located directly downstream from said layer of ion exchange resin, said fourth filter pad used for screening out small and fine sediments and particles in the water; anda layer of granulated calcite received inside said cartridge, said layer of granulated calcite located downstream from said fourth filter pad, said layer of granulated calcite used to increase the water's pH.