# US 10,307,697 B2 · Filter cartridge

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- Number: US 10,307,697 B2
- Document ID: US10307697B2
- Status: Granted
- Kind: B2
- Application number: 14/835,177
- Filed: 2015-08-25
- Published: 2016-08-04
- Granted: 2019-06-04
- Earliest claimed: 2015-01-30
- Assignees: KX Technologies LLC
- Applicants: KX Technologies LLC
- Inventors: Blake Savoy; Keith D. Johnson; Michael J. Sherman; Frank A. Brigano; Richard A. Kirchner; Paul A. Pilosi; Jason J. Ness; Kelly Boudreau; Stephen P. Huda; Teddy Howlett; Peter Cook
- Web page: https://patentgrep.com/patent/US10307697B2

## CPC

- B01D 27/08: Construction of the casing
- B01D 27/02: with cartridges made from a mass of loose {granular or fibrous} material
- B01D 27/06: with corrugated, folded or wound material
- B01D 35/02: Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks, (B01D35/05 takes precedence; {water pipe system filters E03B3/18, E03B7/07; dirt catchers in sewers E03F; filters or strainers for pipe-lines in general B08B, E03F; object or dirt catching devices in sinks or the like E03C1/26; suction strainers or filters for pumps F04B53/005, F04D29/70})
- 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 1/286: {using natural organic sorbents or derivatives thereof}
- C02F 2201/006: Cartridges
- C02F 2307/04: as part of a pitcher or jug
- 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

Filters for use in conjunction with valves of the faucet or spigot type, and to filters for use in devices for withdrawing liquids from containers at relatively low pressures, such as gravity feed jugs or other gravity feed reservoirs. A ¼-turn attachment scheme for connecting a filter cartridge to a gravity feed reservoir, such as within a beverage making/dispensing device.

## Claims

### Claim 1

A filter assembly for a container comprising:
a fluid dispensing spigot having a portion located on the outside of said container, and a portion extending therethrough, such that said spigot is in fluid communication with fluid within said container and forms a fluid tight seal with said container; and
a cylindrical filter housing rotatably secured to, and coaxial with, said spigot or an adapter attached to said spigot, and having a filter media enclosed therein, a body portion, a handle end capping said filter media, and a housing egress end opposite said handle end, said egress end forming a fluid-tight seal with said spigot or with said adapter attached to said spigot, said body portion in fluid communication with said housing egress end and having a plurality of apertures opening in a direction radially outwards from a center axis of said cylindrical filter for fluid ingress to said filter media, and forming a fluid tight seal with said spigot by threaded fit, such that removal of said filter media requires rotation of said handle end of said filter housing and removal of said filter housing without affecting said fluid-tight seal between said spigot and said container;
wherein said adapter includes a threaded interface for making a fluid tight attachment of said adapter to said spigot.

### Claim 2 (depends on 1)

The filter assembly of claim 1 wherein said filter media includes pleated paper of fibrillated fibers.

### Claim 3 (depends on 1)

The filter assembly of claim 1 wherein said filter media includes extruded carbon.

### Claim 4

A filter assembly for a container comprising:
a fluid dispensing spigot having a portion located on the outside of said container;
an extension member connected to or integral with said spigot, and extending through a wall of said container and into said container such that said spigot is in fluid communication with fluid within said container; and
a filter housing assembly having a filter housing and a right-angled neck portion forming a right-angle with respect to said extension member at a first end and a cylindrical base portion at a second end, said right-angled neck portion having said first end coaxial with said extension member, and forming a fluid-tight seal with said spigot extension member at said first end, said filter housing threadably and rotationally attached to said right-angled neck portion, said right-angled neck portion threadably attached to said spigot extension member, said base portion in fluid communication with said right-angled neck portion, and having a plurality of apertures for fluid ingress to filter media enclosed within said filter housing, wherein said right-angled neck portion locates said base portion perpendicular from said extension member.

### Claim 5

A housingless filter cartridge assembly for a gravity fed system, comprising:
a handle having a handle end cap;
a filter core member attached to, and in mechanical communication with, said handle end cap, and extending from said handle end cap to a lower end cap;
said lower end cap attached to, and in mechanical communication with, said filter core member and having a connector for mating with a complementary manifold; and
a cylindrical filter media having sidewalls circumferentially exposed to ingress fluid in the absence of a filter housing, and having an open axial center for receiving said filter core member in said axial center, and forming a sealing engagement with said handle end cap at one end and said lower end cap at the other end, wherein said cylindrical filter media is directly exposed to ingress fluid without an intermediate housing sidewall therebetween;
such that when said handle is rotated, said handle end cap and said lower end cap are correspondingly rotated mating said lower end cap with said manifold.

### Claim 6 (depends on 5)

The filter cartridge assembly of claim 5 wherein said lower end cap includes a top side facing said filter media, a bottom side, and a sidewall, said connector attached to or integral with said sidewall.

### Claim 7 (depends on 5)

The filter cartridge assembly of claim 5, wherein said connector comprises angled protrusions extending radially outwards from said sidewall for threadably engaging with said complementary manifold, said angled protrusions having an angle for seating said filter cartridge assembly to said manifold in about a one-quarter turn revolution of said filter cartridge.

### Claim 8 (depends on 7)

The filter cartridge assembly of claim 7 wherein said angled protrusions seat or lower said lower end cap within said complementary manifold when said lower end cap is rotated relative to said complementary manifold.

### Claim 9 (depends on 5)

The filter cartridge assembly of claim 5 wherein said lower end cap is rotated approximately ¼-turn to fully seat said lower end cap within said complementary manifold.

### Claim 10 (depends on 5)

The filter cartridge assembly of claim 5 wherein said lower end cap bottom side includes a cylindrical extension extending axially downwards from said lower end cap bottom side, said cylindrical extension having an orifice therethrough to allow filtered water to flow from said filter media.

### Claim 11 (depends on 5)

The filter cartridge assembly of claim 5 wherein said handle end cap is attached to, or integrally formed with, said handle at one end, and sealingly engaged with said filter media at the other end.