# US 2016/0257575 A1 · Portable pitcher for filtering and dispensing drinking water > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0257575 A1 - Document ID: US20160257575A1 - Status: Published application - Kind: A1 - Application number: 15/059,814 - Filed: 2016-03-03 - Published: 2016-09-08 - Earliest claimed: 2015-03-05 - Assignees: Liquidity Corporation - Applicants: Liquidity Corporation - Inventors: Michael Hawes - Web page: https://patentgrep.com/patent/US20160257575A1 ## CPC - C02F 1/003: {using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices (C02F9/20 takes precedence)} - B01D 39/14: Other self-supporting filtering material {; Other filtering material (non-woven fabrics in general D04H3/00)} - B01D 71/421: {Polyacrylonitrile} - C02F 1/44: by dialysis, osmosis or reverse osmosis {(general membrane separation processes B01D61/00, membrane modules B01D63/00, electrodialysis C02F1/4693, combination of membrane modules and bioreactors C02F3/1268)} - C02F 1/283: {using coal, charred products, or inorganic mixtures containing them} - C02F 1/42: by ion-exchange (ion-exchange in general B01J) - C02F 2201/006: Cartridges - C02F 2307/04: as part of a pitcher or jug - Y02A 20/208: Off-grid powered water treatment - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract An apparatus for filtering and dispensing drinking water is disclosed which includes a container having an interior space with a dividing wall defining a first chamber for receiving unfiltered water and a second chamber for storing filtered drinking water, wherein a passage is formed through the interior wall adjacent a bottom surface of the container to provide fluid communication between the first and second chambers, and wherein at least one multi-layered filter pack is disposed across the passage to filter water flowing from the first chamber to the second chamber under force of gravity. ## Claims ### Claim 1 An apparatus for filtering and dispensing drinking water comprising: a container having an interior space with a dividing wall defining a first chamber for receiving unfiltered water and a second chamber for storing filtered drinking water, wherein a passage is formed through the interior wall adjacent a bottom surface of the container to provide fluid communication between the first and second chambers, and wherein at least one removable multi-layered filter pack is disposed across the passage to filter water flowing from the first chamber to the second chamber under force of gravity. ### Claim 2 (depends on 1) An apparatus as recited in claim 1, wherein the at least one multi-layered filter pack contains a plurality of filter media layers arranged in series. ### Claim 3 (depends on 2) An apparatus as recited in claim 2, wherein the at least one multi-layered filter pack contains at one pre-filtration layer. ### Claim 4 (depends on 3) An apparatus as recited in claim 3, wherein the at least one pre-filtration layer is a glass fiber pre-filtration layer. ### Claim 5 (depends on 2) An apparatus as recited in claim 2, wherein the at least one multi-layered filter pack contains at least one bacteria retention layer. ### Claim 6 (depends on 5) An apparatus as recited in claim 5, wherein the bacteria retention layer is a nanofiber membrane layer. ### Claim 7 (depends on 6) An apparatus as recited in claim 6, wherein the nanofiber membrane layer is formed of an electrospun polymer resin. ### Claim 8 (depends on 3) An apparatus as recited in claim 3, wherein the electrospun polymer resin is Polyacrylonitrile (PAN). ### Claim 9 (depends on 3) An apparatus as recited in claim 3, wherein the nanofiber membrane layer includes a substrate made of polyethylene terephthalate (PET). ### Claim 10 (depends on 2) An apparatus as recited in claim 2, wherein the at least one multi-layered filter pack contains at one at least one virus retention layer. ### Claim 11 (depends on 10) An apparatus as recited in claim 10, wherein the at least one virus retention layer is a positively charged microporous media layer. ### Claim 12 (depends on 7) An apparatus as recited in claim 7, wherein the positively charged microporous membrane layer includes a porous substrate with a cross-linked polymer coating. ### Claim 13 (depends on 12) An apparatus as recited in claim 12, wherein the porous substrate of the at least one virus retention layer is made of glass fiber. ### Claim 14 (depends on 1) An apparatus as recited in claim 1, wherein plural multi-layered filter packs are arranged in series across the passage. ### Claim 15 (depends on 14) An apparatus as recited in claim 14, wherein at least one of said plural multi-layered filter packs contains a carbon filter media layer. ### Claim 16 (depends on 14) An apparatus as recited in claim 14, wherein at least one of said plural multi-layered filter packs contains an ion exchange media layer. ### Claim 17 (depends on 1) An apparatus as recited in claim 1, further comprising a pre-filter operatively associated with the first chamber for removing relatively large particulates from the water introduced into the first chamber upstream from the at least one filter pack. ### Claim 18 (depends on 17) An apparatus as recited in claim 17, wherein the pre-filter is seated in a well formed above the first chamber. ### Claim 19 (depends on 1) An apparatus as recited in claim 1, wherein a cover is associated with the first and second chambers. ### Claim 20 (depends on 1) An apparatus as recited in claim 1, wherein the container includes a handle adjacent the first chamber and a spout associated with the second chamber.