# US 2021/0276884 A1 · Liquid Treatment Device, Method of Manufacturing It and Liquid Treatment System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276884 A1 - Document ID: US20210276884A1 - Status: Published application - Kind: A1 - Application number: 16/476,980 - Filed: 2017-11-14 - Published: 2021-09-09 - Earliest claimed: 2016-11-14 - Assignees: Brita LP - Applicants: Brita GmbH - Inventors: Marcus HORN; Thomas NAGEL - Web page: https://patentgrep.com/patent/US20210276884A1 ## CPC - C02F 1/003: {using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices (C02F9/20 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 1/444: {by ultrafiltration or microfiltration} - C02F 9/20: Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems - C02F 2001/425: {using cation exchangers} - C02F 2201/004: Seals, connections - C02F 2201/006: Cartridges - C02F 2303/04: Disinfection - 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) ## Abstract A liquid treatment device includes a body. The body includes a container section defining a container for holding liquid to be treated and a liquid treatment section defining a cavity and including at least one liquid treatment part. The body includes at least one liquid-impermeable wall defining at least a bottom of the container and at least one wall enclosing the cavity. These walls are inseparable, any seams in transitions between these walls being between parts of the body joined by bonding. The liquid treatment device is provided with at least one first liquid-permeable window allowing liquid to egress from the device and at least one second liquid-permeable window allowing liquid to flow from an interior of the container to the cavity. The liquid treatment device includes a barrier between the cavity and the container interior, inseparable from the body, the barrier including at least one of the second windows. ## Claims ### Claim 1 A liquid treatment device including a body, the body including: a container section defining a container for holding liquid to be treated and a liquid treatment section defining a cavity and including at least one liquid treatment part, wherein the body includes at least one liquid-impermeable wall defining at least a bottom of the container and at least one wall enclosing the cavity, wherein these walls of the body are inseparable, any seams in transitions between these walls being between parts of the body joined by bonding, and wherein the liquid treatment device is provided with at least one first liquid-permeable window allowing liquid to egress from the device and at least one second liquid-permeable window allowing liquid to flow from an interior of the container to the cavity, wherein the liquid treatment device includes a barrier between the cavity and the container interior, the barrier including at least one of the second windows, wherein the barrier is inseparable from the body. ### Claim 2 (depends on 1) The liquid treatment device according to claim 1, wherein the barrier is a wall section in which at least one of the second windows is provided, and wherein any seams in a transition between the wall section and an adjoining section of the body surrounding the wall section are between parts of the body joined by bonding. ### Claim 3 (depends on 2) The liquid treatment device according to claim 2, wherein the wall section is made in one piece with a wall defining at least the bottom of the container. ### Claim 4 (depends on 2) The liquid treatment device according to claim 2, wherein the wall section is a wall of a housing of the cavity, the housing being joined to the container section to a wall defining at least the bottom of the container, by bonding. ### Claim 5 (depends on 1) The liquid treatment device according to claim 1, wherein the liquid treatment section includes a cavity side wall closed on itself about the cavity, and wherein any seams in a transition between a circumference of the cavity side wall at an end thereof proximal to the container section, and the at least one liquid-impermeable wall defining at least the bottom of the container are between parts of the body joined by bonding. ### Claim 6 (depends on 5) The liquid treatment device according to claim 5, wherein the cavity side wall forms the first liquid-permeable window, wherein the cavity side wall includes at least one layer of sheet material, e.g. pleated. ### Claim 7 (depends on 1) The liquid treatment device according to claim 1, wherein the at least one liquid treatment part includes at least one of a granular and a fibrous liquid treatment medium. ### Claim 8 (depends on 1) The liquid treatment device according to claim 1, wherein the at least one liquid treatment part is arranged in the cavity. ### Claim 9 (depends on 8) The liquid treatment device according to claim 8, wherein an interior surface of a side wall of the cavity bounds the cavity. ### Claim 10 (depends on 9) The liquid treatment device according to claim 9, wherein a liquid treatment medium arranged in the cavity is arranged to contact the interior surface of the cavity side wall. ### Claim 11 (depends on 1) The liquid treatment device according to claim 1, wherein the liquid treatment section has an elongated cross-section. ### Claim 12 (depends on 1) The liquid treatment device according to claim 1, wherein a side wall of the liquid treatment section and one of the barrier and an end wall at an opposite end of the liquid treatment section to the barrier are parts of a beaker-shaped component, integral parts of a beaker-shaped component made in one piece. ### Claim 13 (depends on 1) A liquid treatment system, including a container for collecting treated liquid and the liquid treatment device according to claim 1, suspendable above a base of the container for collecting treated liquid. ### Claim 14 (depends on 1) A method of manufacturing the liquid treatment device according to claim 1, including the steps of: forming the body including at least one of the walls and joining the body and the other walls together. ### Claim 15 (depends on 14) The method according to claim 14, including manufacturing the liquid treatment section and the container section separately and joining the liquid treatment section to the container section. ### Claim 16 (depends on 2) The liquid treatment device according to claim 2, wherein the liquid treatment section includes a cavity side wall, closed on itself about the cavity, and wherein any seams in a transition between a circumference of the cavity side wall at an end thereof proximal to the container section, and the at least one liquid-impermeable wall defining at least the bottom of the container are between parts of the body joined by bonding, and wherein the cavity side wall forms the first liquid-permeable window, wherein the cavity side wall includes at least one layer of sheet material, e.g. pleated. ### Claim 17 (depends on 16) The liquid treatment device according to claim 16, wherein the at least one liquid treatment part includes at least one of a granular and a fibrous liquid treatment medium, and wherein the at least one liquid treatment part is arranged in the cavity. ### Claim 18 (depends on 17) The liquid treatment device according to claim 17, wherein an interior surface of a side wall of the cavity bounds the cavity, and wherein a liquid treatment medium arranged in the cavity is arranged to contact the interior surface of the cavity side wall. ### Claim 19 (depends on 18) The liquid treatment device according to claim 18, wherein the liquid treatment section has an elongated cross-section, and wherein a side wall of the liquid treatment section and one of the barrier and an end wall at an opposite end of the liquid treatment section to the barrier are parts of a beaker-shaped component, integral parts of a beaker-shaped component made in one piece. ### Claim 20 (depends on 19) A liquid treatment system, including a container for collecting treated liquid and the liquid treatment device according to claim 19, suspendable above a base of the container for collecting treated liquid.