# US 2014/0197082 A1 · Filtration assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197082 A1 - Document ID: US20140197082A1 - Status: Published application - Kind: A1 - Application number: 14/157,377 - Filed: 2014-01-16 - Published: 2014-07-17 - Earliest claimed: 2013-01-16 - Assignees: Grayl Inc. - Applicants: Grayl Inc. - Inventors: Nancie Weston; Travis Merrigan; Michael Bargiel - Web page: https://patentgrep.com/patent/US20140197082A1 ## CPC - B01D 35/143: Filter condition indicators - B01D 29/114: {arranged for inward flow filtration (B01D29/15, B01D29/33 take precedence)} - B01D 33/0116: {arranged for inward flow filtration} - C02F 1/001: {Processes for the treatment of water whereby the filtration technique is of importance (C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00)} - B01D 2201/295: with projections extending in a radial outward direction, e.g. for use as a guide, spacing means - 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) - 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 filtration assembly generally includes a housing having a first end configured to interface with an outer container and having a second end configured to interface with an inner sleeve, wherein the housing includes a plurality of apertures configured to pass a liquid therethrough, and a counting device carried by the housing, wherein the counting device is configured to indicate to a user that an associated filter is exhausted. ## Claims ### Claim 1 A filtration assembly, comprising: (a) a housing having a first end configured to interface with an outer container and having a second end configured to interface with an inner sleeve, wherein the housing includes a plurality of apertures configured to pass a liquid therethrough; and (b) a counting device carried by the housing, wherein the counting device is configured to indicate to a user that an associated filter is exhausted. ### Claim 2 (depends on 1) The filtration assembly of claim 1, wherein the liquid includes water. ### Claim 3 (depends on 1) The filtration assembly of claim 1, wherein the first end of the housing is configured to interface with an inner cavity of the outer container to provide positive pressure liquid displacement. ### Claim 4 (depends on 3) The filtration assembly of claim 3, wherein the inner cavity of the outer container and the inner sleeve are concentric with one another. ### Claim 5 (depends on 3) The filtration assembly of claim 3, further comprising a filter supported by the housing and disposed in liquid communication with the plurality of apertures and the inner sleeve. ### Claim 6 (depends on 5) The filtration assembly of claim 5, wherein the filter is exhausted after a predetermined volume of liquid passes through the filter. ### Claim 7 (depends on 5) The filtration assembly of claim 5, wherein the filter is selected from the group consisting of screens, sieve filters, granular-activated carbon filters, metallic alloy filters, microporous ceramic filters, a carbon block resin filters, electrostatic nanofiber filters, reverse osmosis filters, ion exchange filters, UV light filters, hollow fiber membrane filters, and ultra-filtration membrane filters. ### Claim 8 (depends on 1) The filtration assembly of claim 1, wherein the indication to a user that an associated filter is exhausted is dependent on volume of filtered liquid. ### Claim 9 (depends on 3) The filtration assembly of claim 3, wherein the counting device includes a first movable member positioned to interface with the outer container when the housing moves within the inner cavity of the outer container a selected amount; and a second movable member associated with the first movable member and configured to conditionally move along a path of travel having predetermined total distance, wherein the second movable member sequentially moves a fixed segment of the path of travel with respect to the housing each time the housing moves within the inner cavity of the outer container the predetermined amount. ### Claim 10 (depends on 9) The filtration assembly of claim 9, wherein the counting device indicates to a user that an associated filter is exhausted when the second movable member has moved along the path of travel a distance substantially equal to the predetermined total distance. ### Claim 11 (depends on 9) The filtration assembly of claim 9, wherein the first movable member is biased in a first position, and configured for translational movement between the first position and a second position relative to the outer container. ### Claim 12 (depends on 11) The filtration assembly of claim 11, wherein the second movable member is configured for rotational movement to sequentially move a fixed segment of the path of travel with respect to the housing each time the first movable member moves from the first position to the second position. ### Claim 13 (depends on 12) The filtration assembly of claim 12, wherein the second movable member is configured for rotational movement to sequentially move a fixed segment of the path of travel with respect to the housing each time the first movable member moves from the second position to the first position. ### Claim 14 A container assembly, comprising; an outer container having an open ended cavity configured to hold a quantity of liquid; an inner sleeve configured to slide within the open ended cavity; and a filtration assembly including: a housing having a first end configured to interface with the outer container and having a second end configured to interface with the inner sleeve, wherein the housing includes a plurality of apertures configured to pass a liquid between the outer container and the inner sleeve; and a counting device carried by the housing, wherein the counting device is configured to indicate to a user that an associated filter is exhausted. ### Claim 15 (depends on 14) The container assembly of claim 14, wherein the counting device includes a first movable member positioned to interface with the outer container when the housing moves within the inner cavity of the outer container a selected amount; and a second movable member associated with the first movable member and configured to conditionally move along a path of travel having predetermined total distance, wherein the second movable member sequentially moves a fixed segment of the path of travel with respect to the housing each time the housing moves within the inner cavity of the outer container the predetermined amount. ### Claim 16 (depends on 15) The container assembly of claim 15, wherein the counting device indicates to a user that an associated filter is exhausted when the second movable member has moved along the path of travel a distance substantially equal to the predetermined total distance. ### Claim 17 (depends on 16) The container assembly of claim 16, wherein the second movable member contacts a portion of the outer container when moved along the path of travel a distance substantially equal to the predetermined total distance.