# US 2021/0331007 A1 · Filter cartridge and methods of making and using > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0331007 A1 - Document ID: US20210331007A1 - Status: Published application - Kind: A1 - Application number: 17/241,962 - Filed: 2021-04-27 - Published: 2021-10-28 - Earliest claimed: 2020-04-27 - Assignees: W. L. Gore & Associates, Inc. - Applicants: W. L. Gore & Associates, Inc. - Inventors: Kevin J. Cresswell; Nathan L. Friedman; Justin W. Sokel - Web page: https://patentgrep.com/patent/US20210331007A1 ## CPC - A62B 23/02: for respirators - B01D 46/2414: {End caps including additional functions or special forms} - A62B 7/10: with filter elements - A62B 18/08: Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices (eye-pieces for protective goggles A61F9/02; composition of materials for the windows or other transparent parts A62D7/00) - B01D 29/21: with corrugated, folded or wound sheets - B01D 46/52: Particle separators, e.g. dust precipitators, using filters embodying folded {corrugated or wound sheet} material - B01D 2201/0415: Details of supporting structures - B01D 2201/291: End caps - B01D 2201/4015: Bayonet connecting means - B01D 2265/022: Bayonet connecting means - B01D 2271/022: Axial sealings - A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00) - 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 A filter cartridge includes a first end component, a second end component, and filter media positioned between the first end component and the second end component is provided. The filter media maintains separation between the first end component and the second end component to allow for air flow through the filter media. The first end component includes at least two receptors and the second end component includes at least one protrusion configured to interface with the at least two receptors to hold the first end component and the second end component in the same relative position with respect to each other when a torque is applied to the filter cartridge. The cartridge is assembled together by adhesive binding the filter media to the first end component and the second end component. ## Claims ### Claim 1 A filter cartridge comprising: a first end component, a second end component, and a filter media positioned between the first end component and the second end component, the filter media maintaining separation between the first end component and the second end component to allow for air flow through the filter media; wherein the first end component includes at least two receptors and the second end component includes at least one protrusion configured to interface with the at least two receptors to hold the first end component and the second end component in the same relative position with respect to each other when a torque is applied to the filter cartridge; wherein the cartridge is assembled together by adhesive binding the filter media to the first end component and the second end component. ### Claim 2 (depends on 1) The filter cartridge of claim 1, wherein the first end component includes at least 3 slots and the second end component includes at least 3 corresponding protrusions. ### Claim 3 (depends on 1) The filter cartridge of claim 1, wherein the first end component and the second end component include a series of projections that partially cover the filter media to protect the filter media from damage when the filter cartridge is handled. ### Claim 4 (depends on 3) The filter cartridge of claim 3, wherein the projections comprise an undulating pattern. ### Claim 5 (depends on 1) The filter cartridge of claim 1, wherein the cartridge is assembled together with only the adhesive binding the filter media to the first end component and the second end component. ### Claim 6 (depends on 1) The filter cartridge of claim 1, wherein a fitting is included on at least one of the first and second end components to allow the filter cartridge to be attached onto a base. ### Claim 7 (depends on 6) The filter cartridge of claim 6, wherein the fitting is configured to allow the filter cartridge to be attached to the base by twisting. ### Claim 8 (depends on 6) The filter cartridge of claim 6, wherein the base comprises a facemask. ### Claim 9 (depends on 6) The filter cartridge of claim 6, wherein the base comprises an interface with a hose. ### Claim 10 (depends on 9) The filter cartridge of claim 9, wherein the hose attaches to a powered air purification device. ### Claim 11 (depends on 9) The filter cartridge of claim 9, wherein the hose attaches to a ventilator device. ### Claim 12 (depends on 6) The filter cartridge of claim 6, wherein the base comprises an interface with a flat plate with a cutout. ### Claim 13 (depends on 6) The filter cartridge of claim 6, wherein one of the first and second end component including the fitting includes a gasket interface. ### Claim 14 (depends on 13) The filter cartridge of claim 13, wherein the gasket interface comprises a groove configured to receive an O-ring gasket to seal between the filter cartridge and the base. ### Claim 15 (depends on 13) The filter cartridge of claim 13, wherein the gasket interface comprises a circular flat gasket attached to one of the first and second end components. ### Claim 16 A filter cartridge that comprises a first end component, a second end component, and a filter media positioned between the first end component and the second end component, the filter media maintaining separation between the first end component and the second end component to allow for air flow through the filter media; wherein the first end component and the second end component include a series of projections that partially cover the filter media to protect the filter media from damage when the filter cartridge is handled. ### Claim 17 (depends on 16) The filter cartridge of claim 16, wherein the projections comprise an undulating pattern. ### Claim 18 (depends on 16) The filter cartridge of claim 16, wherein the first end component includes at least two slots and the second end component includes at least one protrusion configured to interface with the at least two slots to hold the first end component and the second end component in the same relative position with respect to each other when a torque is applied to the filter cartridge. ### Claim 19 (depends on 18) The filter cartridge of claim 18, wherein the first end component includes at least 3 slots and the second end component includes at least 3 corresponding protrusions. ### Claim 20 (depends on 16) The filter cartridge of claim 16, wherein a fitting is included on at least one of the end components to allow the filter cartridge to be attached onto a base. ### Claim 21 (depends on 20) The filter cartridge of claim 20, wherein the base comprises a facemask. ### Claim 22 A filter cartridge comprising: a first end component, a second end component, and filter media positioned between the first end component and the second end component, the filter media maintaining separation between the first end component and the second end component to allow for air flow through the filter media; wherein the first end component includes at least one protrusion configured to interface with second end component to resist compression of the first end component towards the second end component other during use; wherein the cartridge is assembled together by adhesive binding the filter media to the first end component and the second end component. ### Claim 23 A filter cartridge for mounting to a facemask, the filter cartridge comprising: a first end component having a first diameter; a second end component having a second end diameter that is greater than the first diameter; and a filter media positioned between the first end component and the second end component, the filter media maintaining separation between the first end component and the second end component to allow for air flow through the filter media, the filter media having a tapered outer profile from the first end component toward the second end component.