# US 2020/0392016 A1 · Water Bottle With a Filter Structure and a Method Therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0392016 A1 - Document ID: US20200392016A1 - Status: Published application - Kind: A1 - Application number: 17/000,771 - Filed: 2020-08-24 - Published: 2020-12-17 - Earliest claimed: 2013-12-18 - Assignees: Brita LP - Applicants: Brita LP - Inventors: Jonathan Taylor Wiegele - Web page: https://patentgrep.com/patent/US20200392016A1 ## CPC - C02F 1/003: {using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices (C02F9/20 takes precedence)} - B01D 29/114: {arranged for inward flow filtration (B01D29/15, B01D29/33 take precedence)} - B01D 35/30: Filter housing constructions - C02F 1/002: {using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear (C02F1/003 takes precedence)} - C02F 1/283: {using coal, charred products, or inorganic mixtures containing them} - C02F 1/42: by ion-exchange (ion-exchange in general B01J) - C02F 2101/12: Halogens or halogen-containing compounds - C02F 2101/20: Heavy metals or heavy metal compounds - C02F 2303/185: The treatment agent being halogen or a halogenated compound - C02F 2307/02: as part of a bottle - C02F 2307/04: as part of a pitcher or jug - 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) ## Abstract An on-demand filter structure including a first hydrophilic protective layer comprising a first surface exposable to a stream of water. A contact area on the first surface receives the stream. The first hydrophilic protective layer receives the stream and distributes water out a second surface, primarily using gravity. An activated carbon felt (ACF) layer is adjacent to the second surface, wherein the ACF layer is configured for water filtration, primarily using gravity. A second hydrophilic protective layer includes a third surface adjacent the ACF layer and a fourth surface. The third surface receives filtered water from the ACF layer, and the fourth surface expels the filtered water primarily using gravity, wherein the first and second hydrophilic protective layers sandwich the ACF layer. A cross section of the first hydrophilic protective layer, the ACF layer, and the second hydrophilic protective layer has a curvature. ## Claims ### Claim 1 A water bottle with a filter structure, comprising: a portable water bottle having a support structure and a reservoir; and a filter assembly configured to be supported by the support structure, including: a first hydrophilic protective layer having a first surface and a second surface, wherein the first surface is opposed to the second surface, a second hydrophilic protective layer having a third surface and a fourth surface, wherein the third surface is opposed to the fourth surface, and a single activated carbon felt (ACF) layer having a fifth surface and a sixth surface, wherein the ACF layer is disposed between the first hydrophilic protective layer and the second hydrophilic protective layer, wherein the fifth surface of the ACF layer contacts the second surface of the first hydrophilic protective layer and the sixth surface of the ACF layer contacts the third surface of the second hydrophilic protective layer; wherein the filter assembly is formed with the ACF layer sandwiched between the first hydrophilic protective layer and the second hydrophilic protective layer. ### Claim 2 (depends on 1) The water bottle with the filter structure of claim 1, wherein the support structure includes a first opening and a second opening. ### Claim 3 (depends on 2) The water bottle with the filter structure of claim 2, wherein the filter assembly is in a flow path of the first opening. ### Claim 4 (depends on 2) The water bottle with the filter structure of claim 2, wherein the first opening is configured to allow chuggable drinking. ### Claim 5 (depends on 1) The water bottle with the filter structure of claim 1, wherein the first hydrophilic protective layer and the second hydrophilic protective layer are both formed as distinct layers operable to be positioned relative to the ACF layer. ### Claim 6 (depends on 1) The water bottle with the filter structure of claim 1, wherein the third surface of the second hydrophilic protective layer receives filtered water from the ACF layer; wherein the fourth surface of the second hydrophilic protective layer expels the filtered water from the second hydrophilic protective layer primarily using gravity. ### Claim 7 (depends on 1) The water bottle with the filter structure of claim 1, wherein a bending modulus of the ACF layer allows the ACF layer to hold a selected shape of the ACF layer. ### Claim 8 (depends on 4) The water bottle with the filter structure of claim 4, wherein the selected shape includes a curved surface that is presented to an incoming stream of water for filtration. ### Claim 9 A water bottle with a filter structure, comprising: a portable water bottle having a support structure and a reservoir; and a filter assembly configured to be supported by the support structure, including: a hydrophilic protective layer having a first surface and a second surface, wherein the first surface is opposed to the second surface, and an activated carbon felt (ACF) layer having a third surface and a fourth surface, wherein the ACF layer is disposed in contact with the first hydrophilic protective layer wherein the third surface of the ACF layer contacts the second surface of the first hydrophilic protective layer; wherein the filter assembly is formed with the ACF layer contacting the first hydrophilic protective layer; wherein the filter assembly is configured to provide substantially immediately filter drinkable water. ### Claim 10 (depends on 9) The water bottle of claim 9, wherein the filter assembly further comprises: wherein the hydrophilic protective layer includes a first hydrophilic protective layer and a second hydrophilic protective layer, wherein the first hydrophilic protective layer includes the first surface and the second surface, wherein the second hydrophilic protective layer having a fifth surface and a sixth surface, wherein the fifth surface is opposed to the sixth surface, wherein the fourth surface of the ACF layer contacts the fifth surface of the second hydrophilic protective layer; wherein the ACF layer is sandwiched between the first hydrophilic layer and the second hydrophilic layer. ### Claim 11 (depends on 9) The water bottle of claim 9, wherein the first hydrophilic protective layer and the second hydrophilic protective layer both comprise a cellulose based nonwoven layer. ### Claim 12 (depends on 11) The water bottle of claim 11, wherein the first hydrophilic protective layer and the second hydrophilic protective layer both comprise rayon. ### Claim 13 (depends on 9) The water bottle of claim 9, wherein the first hydrophilic protective layer is configured to facilitate an expanded distribution of water out an exit area at the second surface of the first hydrophilic protective layer, wherein the first hydrophilic protective layer acts as a distributor network for the water such that as the water passes through the first hydrophilic protective layer an exit footprint has a larger two-dimensional surface area than an entry footprint. ### Claim 14 (depends on 9) The water bottle of claim 9, wherein the support structure includes a first opening. ### Claim 15 (depends on 14) The water bottle of claim 14, wherein the first opening is configured to allow chuggable drinking from the portable water bottle. ### Claim 16 (depends on 10) The water bottle of claim 10, wherein both the first protective layer and the second protective layer protect prevent a plurality of flakes from the activated carbon felt layer from entering a fluid passed through the filter assembly. ### Claim 17 A method of filtering water to or from a water bottle with a filter structure, comprising: providing a filter assembly including a first hydrophilic protective layer having a first surface and an opposed second surface, an activated carbon felt layer having a third surface and an opposed fourth surface, wherein the second surface is adjacent the third surface, and a second hydrophilic protective layer having a fifth surface and an opposed sixth surface, wherein the fifth surface is adjacent the fourth surface that is rolled together such that the activated carbon felt layer positioned between the first hydrophilic protective layer and the second hydrophilic protective layer to form the filter structure; and configuring the filter assembly for positioning in a portable water bottle having a support structure. ### Claim 18 (depends on 17) The method of claim 17, further comprising: supporting the provided filter assembly with the support structure within the portable water bottle. ### Claim 19 (depends on 18) The method of claim 18, further comprising: connecting the filter assembly relative to a first opening in the support structure such that water is operable to pass the filter assembly from the first opening. ### Claim 20 (depends on 21) The method of claim 21, further comprising: preventing a plurality of flakes from the activated carbon felt layer from entering or exiting water into or out of the portable water bottle.