# US 8,540,791 B2 · Canister air filter and method for fabricating the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,540,791 B2 - Document ID: US8540791B2 - Status: Granted - Kind: B2 - Application number: 13/493,020 - Filed: 2012-06-11 - Published: 2012-10-04 - Granted: 2013-09-24 - Earliest claimed: 2009-03-24 - Assignees: Camfil Farr, Inc. - Applicants: Lee Pendleton Morgan - Inventors: Lee Pendleton Morgan - Web page: https://patentgrep.com/patent/US8540791B2 ## CPC - B01D 46/2411: {Filter cartridges} - B01D 46/0005: {Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence)} - B01D 46/103: {Curved filtering elements} - B01D 46/58: connected in parallel - B01D 2275/208: Oval shape - Y10S 55/30: Exhaust treatment - Y10T 29/49826: Assembling or joining - 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) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Embodiments for a filter and method for fabricating the same are provide herein. In one embodiment, a filter is provided that includes a first end cap, a second end cap, at least a first filtration media element and at least a first brace. The first end cap has an air flow aperture formed therethrough. The first and second end caps define a central axis. The first filtration media element is coupled to the first and second end caps and has an orientation curved around the central axis. The brace separates a first closed edge of the filtration media element from a second closed edge of the filtration media element. ## Claims ### Claim 1 A method for fabricating an air filter, the method comprising: non-concentrically and non-axially arranging open edges of at least a first filtration media element to form a tubular sleeve of filtration media, wherein adjacent closed edges of the first filtration media element are separated by a first brace, wherein the first brace comprises: an interior wall facing a central axis; an exterior wall facing away from the interior wall; and side walls extending between the interior wall and the exterior wall, wherein a first closed edge of the first filtration media element is sealed to one of the side walls. ### Claim 2 (depends on 1) The method of claim 1, further comprising: sealing the open edges of the first filtration media to a first end cap having an air flow aperture formed therethrough and to a second end cap facing the first end cap, wherein the first end cap and the second end cap define the central axis. ### Claim 3 (depends on 1) The method of claim 1, wherein the first filtration media element is pleated. ### Claim 4 (depends on 1) The method of claim 1, wherein the first filtration media element is a molecular phase filtration media. ### Claim 5 (depends on 4) The method of claim 4, wherein the molecular phase filtration media further comprise carbon-based media. ### Claim 6 (depends on 1) The method of claim 1, wherein the first brace comprises an extruded or stamped member. ### Claim 7 (depends on 1) The method of claim 1, wherein the first brace comprises a hollow interior. ### Claim 8 A method for fabricating an air filter, the method comprising: non-concentrically and non-axially arranging open edges of at least a first filtration media element and at least a second filtration media element to form a tubular sleeve of filtration media, wherein a first closed edge of the first filtration media element and a first closed edge of the second filtration media element are separated by at least a first brace, wherein the first brace comprises: an interior wall facing a central axis; an exterior wall facing away from the interior wall; and side walls extending between the interior wall and the exterior wall, wherein the first closed edge of the first filtration media element is sealed to one of the side walls of the first brace and the first closed edge of the second filtration media element is sealed to one of the side walls of the first brace. ### Claim 9 (depends on 8) The method of claim 8 further comprising: sealing the open edges of the first filtration media and the second filtration media to a first end cap having an air flow aperture formed therethrough and to a second end cap facing the first end cap, wherein the first end cap and the second end cap define the central axis. ### Claim 10 (depends on 8) The method of claim 8 further comprising: sealing a second closed end of the first filtration media element and a second closed end of the second media filtration element, wherein the second closed ends are separated by a second brace, wherein the second brace comprises: an interior wall facing the central axis; an exterior wall facing away from the interior wall; and side walls extending between the interior wall and the exterior wall, wherein a second closed edge of the first filtration media element is sealed to one of the side walls of the second brace and a second closed edge of the second filtration media element is sealed to one of the side walls of the second brace. ### Claim 11 (depends on 10) The method of claim 10 further comprising: sealing the open edges of the first filtration media and the second filtration media to a first end cap having an air flow aperture formed therethrough and to a second end cap facing the first end cap, wherein the first end cap and the second end cap define the central axis.