# US 2021/0171384 A1 · Water treatment system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0171384 A1 - Document ID: US20210171384A1 - Status: Published application - Kind: A1 - Application number: 17/078,582 - Filed: 2020-10-23 - Published: 2021-06-10 - Earliest claimed: 2019-12-06 - Assignees: Access Business Group International LLC - Applicants: Access Business Group International LLC - Inventors: Ziqi Wu; Karlis Vecziedins; Shih-Yi Chang; Tianxiong Zeng; Terry L. Lautzenheiser; Daniel L. Schlenk; Bradley J. Pippel - Web page: https://patentgrep.com/patent/US20210171384A1 ## CPC - C02F 9/20: Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems - C02F 1/003: {using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices (C02F9/20 takes precedence)} - C02F 1/32: with ultraviolet light - C02F 2201/004: Seals, connections - C02F 2201/3222: Units using UV-light emitting diodes [LED] - 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) ## Abstract A water treatment system is provided with an untreated water reservoir having a cavity through which a filter assembly may traverse such that untreated water in the cavity passes through the filter assembly into a treated water reservoir. Removal of the filter assembly may be facilitated by a seal disengagement element operable to unseat a seal formed during efforts to direct untreated water through the filter assembly. ## Claims ### Claim 1 A water treatment system comprising: an untreated water reservoir having a cavity capable of holding untreated water; a main body comprising a filter assembly and a treated water reservoir; the filter assembly adapted to be disposed within the cavity of the untreated water reservoir, the filter assembly including an inlet configured to be fluidly coupled with the cavity to receive the untreated water, the filter assembly including an outlet configured to discharge treated water; the treated water reservoir configured to store treated water discharged from the filter assembly, the treated water reservoir including a first end opening and second end opening, the second end opening of the treated water reservoir being fluidly coupled with the outlet of the filter assembly; a wiping seal interface including a seal between a seal engagement surface of the main body and an inner surface of the untreated water reservoir; wherein the seal of the wiping seal interface provides a substantially air and water tight seal between an environment and the cavity of the untreated water reservoir, wherein displacing the main body into the cavity of the untreated water reservoir directs the untreated water through the filter assembly into the treated water reservoir; and wherein the wiping seal interface includes a seal disengagement element operable to unseat the seal to break the substantially air and water tight seal based on movement of the main body out of the cavity of the untreated water reservoir. ### Claim 2 (depends on 1) The water treatment system of claim 1 wherein the main body includes a cap assembly operable to engage the first end opening of the treated water reservoir. ### Claim 3 (depends on 2) The water treatment system of claim 2 wherein the cap assembly includes a spout in fluid communication with the treated water reservoir to provide the treated water to a user for consumption. ### Claim 4 (depends on 2) The water treatment system of claim 2 wherein the cap assembly includes an air passage that substantially equalizes a pressure in the treated water reservoir with the environment, wherein the wiping seal interface is operable to generate a pressure differential between the treated water reservoir and the untreated water reservoir in order to direct the untreated water through the filter assembly. ### Claim 5 (depends on 2) The water treatment system of claim 2 wherein the cap assembly includes a UV treatment system with a UV light source for disinfecting water. ### Claim 6 (depends on 1) The water treatment system of claim 1 wherein the filter assembly and the treated water reservoir are operable to connect via a twist lock connection. ### Claim 7 (depends on 6) The water treatment system of claim 6 wherein the twist lock connection is configured to substantially prevent the filter assembly from disengaging from the treated water reservoir within the cavity of the untreated water reservoir in response to rotation of the main body relative to the untreated water reservoir. ### Claim 8 (depends on 1) The water treatment system of claim 1 wherein the wiping seal interface includes a finger operable to pry the seal from the inner surface of the cavity of the untreated water reservoir in order to unseat the seal. ### Claim 9 (depends on 1) The water treatment system of claim 1 wherein the wiping seal interface includes a tapered finger operable to unseat the seal from the inner surface of the cavity of the untreated water reservoir in response to manual effort to separate the main body from the untreated water reservoir. ### Claim 10 (depends on 9) The water treatment system of claim 9 wherein the manual effort involves a user applying force along a longitudinal axis of the water treatment system to separate the main body from the untreated water reservoir. ### Claim 11 (depends on 9) The water treatment system of claim 9 wherein the tapered finger includes a tip that is operable to slide between the seal and the inner surface. ### Claim 12 (depends on 11) The water treatment system of claim 11 wherein the tip is disposed to engage the seal between a seal contacting surface of the seal and a center of the seal. ### Claim 13 (depends on 1) The water treatment system of claim 1 wherein the filter assembly includes a check valve operable to allow water to flow into the treated water reservoir and operable to substantially prevent water from flowing from the treated water reservoir into the untreated water reservoir. ### Claim 14 (depends on 13) The water treatment system of claim 13 wherein the wiping seal interface is operable to avoid formation of a substantial vacuum within the untreated water reservoir in response to effort to remove the main body from the untreated water reservoir. ### Claim 15 A water treatment system comprising: an untreated water reservoir having a cavity capable of holding untreated water; a filter assembly adapted to fit within the cavity of the untreated water reservoir, the filter assembly including an inlet configured to be fluidly coupled with the cavity to receive the untreated water, the filter assembly including an outlet configured to discharge treated water; a treated water reservoir configured to store treated water, the treated water reservoir being fluidly coupled with the outlet of the filter assembly; a wiping seal interface operable to facilitate generating a pressure differential to direct untested water through the filter assembly; a cap having a spout for discharging the treated water stored in the treated water reservoir for consumption by a user, the cap having an air passage to a surrounding environment, the air passage and the wiping seal interface configured to facilitate generation of the pressure differential between the untreated water reservoir and the treated water reservoir such that the untreated water in the cavity of the untreated water reservoir flows through the filter assembly to the treated water reservoir; and wherein the wiping seal interface is operable to break a seal between the surrounding environment and the cavity of the untreated water reservoir to facilitate removal of the filter assembly and the treated water reservoir from the cavity of the untreated water reservoir. ### Claim 16 (depends on 15) The water treatment system of claim 15 wherein the wiping seal interface includes a seal and a seal disengagement element operable to unseat the seal based on longitudinal movement of the seal disengagement element relative to the seal. ### Claim 17 (depends on 16) The water treatment system of claim 16 wherein the seal disengagement element is disposed on the filter assembly, wherein longitudinal movement of the filter assembly to remove the filter assembly from the untreated water reservoir urges the seal disengagement element to unseat the seal. ### Claim 18 (depends on 15) The water treatment system of claim 15 wherein the cap includes a UV treatment assembly with a UV light source. ### Claim 19 A water treatment system comprising: an untreated water reservoir having a cavity capable of holding untreated water; a main body comprising: a filter assembly adapted to fit within the cavity of the untreated water reservoir, the filter assembly including an inlet configured to be fluidly coupled with the cavity to receive the untreated water, the filter assembly including an outlet configured to discharge treated water; a treated water reservoir configured to store treated water, the treated water reservoir being fluidly coupled with the outlet of the filter assembly; a cap having a spout for discharging the treated water stored in the treated water reservoir for consumption by a user, the cap including a UV treatment assembly with a UV light source for disinfecting water; a wiping seal interface between the main body and an inner surface of the untreated water reservoir, the wiping seal interface operable to provide a substantially air and water tight seal between a surrounding environment and the cavity of the untreated water reservoir, the wiping seal interface including a seal disengagement element operable to break the substantially air and water tight seal based on longitudinal movement of the filter assembly relative to the untreated water reservoir; wherein the untreated water reservoir is configured to receive a least a portion of the main body within the cavity of the untreated water reservoir; and wherein the untreated water in the untreated water reservoir passes through the filter assembly into the treated water reservoir to allow displacement of the main body into the cavity of the untreated water reservoir. ### Claim 20 (depends on 19) The water treatment system of claim 19 wherein the cap includes an air passage operable to equalize pressure in the treated water reservoir with the surrounding environment, whereby the wiping seal interface is operable to provide a pressure differential between the treated water reservoir and the untreated water reservoir in order to direct the untreated water into the treated water reservoir.