Patent ID: 7156994
Filing Date: 2007-01-02
Classification: C02F

Abstract:
1. A drinking water filter adapted for receipt in a water filter housing and connected to a water supply source for treating drinking water, the water filter comprising: a hollow filter cartridge, said cartridge including an upper filter cap with water inlet adapted for fluid communication with the drinking water to be treated, said upper filter cap received inside an open top portion of said cartridge, said cartridge also including a lower filter cap with a water outlet, said lower filter cap received inside an open bottom portion of said cartridge; a first sponge filter, said first sponge filter disposed below said upper filter cap; a layer of granulated zinc and copper alloy, said layer of zinc and copper alloy disposed below said first sponge filter, said layer of zinc and copper alloy used for removing chlorine and heavy metals in the water and reducing bacteria in the water; a second sponge filter, said second sponge filter disposed below said layer of granulated zinc and copper alloy; a first filter cap, said first filter cap disposed below said second sponge filter, said first filter cap having a plurality of holes therein; an ultra fine mesh carbon block, said carbon block disposed below said first filter cap for receiving water therefrom, said carbon block used for removing chlorine, odor, color, cysts, protozoa and organic contaminants such as pesticides, herbicides, arsenic, mercury, and trihalomnethanes; a second filter cap, said second filter cap disposed below said carbon block, said second filter cap having an outer ring disposed next to a portion of an inside of said hollow filter cartridge, said second filter cap having a inner ring centered thereon, said inner ring having a plurality of holes centered therein, whereby said second filter cap designed to channeled the water from said carbon block into said inner ring and through said holes centered therein; an “O” ring disposed around a circumference of said outer ring of said second filter cap and engaging a portion of an inside of said filter cartridge, said “O” ring preventing the migration of water around a side of said carbon block and around a side of said second filter cap; a third sponge filter, said third sponge filter disposed below said second filter cap; a layer of granulated ion exchange resin, said layer of ion exchange resin disposed below said third sponge filter, said layer of ion exchange resin used for removing lead from the water; a fourth sponge filter, said fourth sponge filter disposed below said layer of ion exchange resin; a layer of granulated activated carbon, said layer of granulated activated carbon disposed below said fourth sponge filter, said layer of granulated activated carbon used to remove any remaining chlorine, odor, color, and organic contaminants in the water; a layer of granulated calcite, said layer of granulated calcite disposed below said layer of granulated activated carbon, said layer of granulated calcite used to raise the pH of the filtered water; and a final filter pad, said final filter pad disposed below said layer of granulated calcite and on top of said lower filter cap with water outlet.