# US 12,109,526 B2 · Air filter arrangement; assembly; and, methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,109,526 B2 - Document ID: US12109526B2 - Status: Granted - Kind: B2 - Application number: 18/373,001 - Filed: 2023-09-26 - Published: 2024-03-21 - Granted: 2024-10-08 - Earliest claimed: 2005-10-11 - Assignees: Donaldson Company, Inc. - Applicants: Donaldson Company, Inc. - Inventors: Bruce Boehrs; Paul Wendt - Web page: https://patentgrep.com/patent/US12109526B2 ## CPC - B01D 46/526: {in stacked arrangement} - B01D 46/0005: {Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence)} - B01D 46/10: Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces - F02M 35/024: using filters, e.g. moistened (F02M35/026 takes precedence; cleaning of the filtering material F02M35/08) - F02M 35/02416: {Fixing, mounting, supporting or arranging filter elements; Filter element cartridges} - B01D 2271/02: Gaskets, sealings - B01D 2275/205: Rectangular shape - 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) - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF ## Abstract An air filter media construction or arrangement is disclosed. The air filter media construction or arrangement includes facing media secured to fluted media. A preferred projection/receiver arrangement is described. Also, a useful seal arrangement is described. Air cleaner assemblies, methods of assembly and use are also provided. ## Claims ### Claim 1 An air filter cartridge comprising: (a) a filter media pack having a first flow face and a second, opposite, flow face, wherein: (i) the filter media pack includes filter media arranged between the first flow face and the second, opposite, flow face; (ii) the filter media pack having a rectangular cross-sectional shape, in a direction perpendicular to a central flow axis extending between the first flow face and the second, opposite, flow face; (iii) the filter media pack comprising four sides extending between the first flow face and the second, opposite, flow face, wherein the four sides include a first pair of first and second opposite sides, and a second pair of first and second opposite sides; and (iv) the second pair of first and second opposite sides are longer than the first pair of first and second opposites sides; (b) a first end piece sealing the first side of the first pair of first and second opposite sides of the filter media pack; (c) a second end piece sealing the second side of the first pair of first and second opposite sides of the filter media pack; (d) a preform extending around a perimeter of the filter media pack four sides and around the first end piece and the second end piece, wherein: (i) the preform comprises a seal support projecting outwardly from a remainder of the preform; and (e) a housing seal arrangement comprising a seal member located on the preform seal support, wherein the seal member comprises an axially directed seal, in use, wherein (i) the seal member is not slanted in extension across the first pair of first and second opposite sides of the filter media pack. ### Claim 2 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the preform seal support projects outwardly along a periphery of the preform. ### Claim 3 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the seal support comprises a flange integral with the preform. ### Claim 4 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the preform comprises an expansion region to accommodate adhesive. ### Claim 5 (depends on 4) An air filter cartridge according to claim 4 further comprising: (a) adhesive located in the expansion region and adhering the preform in place. ### Claim 6 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the preform is adhered to the filter media pack. ### Claim 7 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the housing seal arrangement includes a portion located around the filter media pack. ### Claim 8 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the housing seal arrangement includes a seal surface that extends across one of the first pair of first and second opposite sides or the second pair of first and second opposite sides non-parallel to the first flow face. ### Claim 9 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the seal member comprises a lip seal. ### Claim 10 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the seal member is molded in place on the seal support. ### Claim 11 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the seal member is adhered on the seal support. ### Claim 12 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the first end piece and the second end piece are molded in place on the first pair of first and second opposite sides of the filter media pack. ### Claim 13 (depends on 12) An air filter cartridge according to claim 12 wherein: (a) the second pair of first and second sides of the filter media pack are at least partially not covered by the first end piece and the second end piece. ### Claim 14 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the first end piece and the second end piece are spaced apart from each other. ### Claim 15 (depends on 1) An air filter cartridge according to claim 1 wherein: (a) the filter media pack comprises alternating fluted media and facing media. ### Claim 16 (depends on 15) An air filter cartridge according to claim 15 wherein: (a) the alternating fluted media and facing media comprise a stack of alternating strips of a fluted media sheet secured to a facing media sheet. ### Claim 17 (depends on 15) An air filter cartridge according to claim 15 wherein: (a) the filter media pack comprising alternating fluted media and facing media comprises channels extending parallel to the central flow axis.