# US 10,369,504 B2 · Cartridge flange and filter system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,369,504 B2 - Document ID: US10369504B2 - Status: Granted - Kind: B2 - Application number: 15/314,261 - Filed: 2015-05-26 - Published: 2017-08-31 - Granted: 2019-08-06 - Earliest claimed: 2014-06-02 - Applicants: Ulmatec GmbH - Inventors: Sebastian Moll; Daniel Ehrhardt - Web page: https://patentgrep.com/patent/US10369504B2 ## CPC - B01D 46/0005: {Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence)} - B01D 46/2403: {characterised by the physical shape or structure of the filtering element} - B01D 46/2411: {Filter cartridges} - B01D 2265/05: Special adapters for the connection of filters or parts of filters - 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 The invention relates to a cartridge flange for fitting filter cartridges in filter systems, in particular industrial suction-extraction systems or air-filter systems. ## Claims ### Claim 1 A cartridge flange for fitting filter cartridges in filter systems (1000), of industrial suction-extraction systems or air-filter systems, the cartridge flange comprising an annular basic shape and three lugs (2) disposed so as to be offset by 120° on the external circumference each said lug (2) having one opening (100, 200, 300) for receiving bolts (11, 11′) for fastening the filter cartridge to the filter system (1000), wherein the lugs (2) are configured in such a manner that the bolts (11, 11′) having dissimilar radial spacings (r1, r2) from an imaginary center (M) of the annular basic shape of the cartridge flange to engage for final fastening of the cartridge flange, wherein each lug (2) comprises edges and bit sides (3, 4) wherein the bit sides (3,4) point in dissimilar directions, wherein the bit sides (3, 4) each have centrical longitudinal axes which display dissimilar spacing radii in relation to an imaginary center (M) of the annular cartridge flange. ### Claim 2 (depends on 1) The cartridge flange as claimed in claim 1, wherein the lugs (2) are configured in such a manner that the bolts (11, 11′) of dissimilar radial spacings (r1, r2) may engage depending on the rotational orientation of the cartridge flange. ### Claim 3 (depends on 1) The cartridge flange as claimed in claim 1, wherein the centrical longitudinal axis of a first bit side (3, 4) has a spacing radius in relation to an imaginary center (M) of the annular cartridge flange in the range from 189.5 to 192.5 mm. ### Claim 4 (depends on 3) The cartridge flange as claimed in claim 3, wherein the centrical longitudinal axis of the first bit side (3, 4) has a spacing radius of 191 mm. ### Claim 5 (depends on 1) The cartridge flange as claimed in claim 1, wherein the centrical longitudinal axis of a second bit side (3, 4) has a spacing radius in relation to an imaginary center (M) of the annular cartridge flange in the range from 194.5 to 197.5 mm. ### Claim 6 (depends on 5) The cartridge flange as claimed in claim 5, wherein the centrical longitudinal axis of a second bit side (3, 4) has a spacing radius in relation to an imaginary center (M) of the annular cartridge flange of 196 mm. ### Claim 7 (depends on 1) The cartridge flange as claimed in claim 1, wherein the opening of each lug (2) is configured as a double keyhole. ### Claim 8 (depends on 1) The cartridge flange as claimed in claim 1, wherein the lugs (2) on the edges thereof have an attachment (7). ### Claim 9 (depends on 1) The cartridge flange as claimed in claim 1, wherein a groove (9) is configured on the lower side of said cartridge flange. ### Claim 10 (depends on 9) The cartridge flange as claimed in claim 9, wherein encircling annular ribs (10) are disposed within the groove (9). ### Claim 11 (depends on 1) The cartridge flange as claimed in claim 1, wherein grooves (8, 8′) which run on either side are configured to establish a seal. ### Claim 12 (depends on 1) The cartridge flange as claimed in claim 1, wherein said cartridge flange is formed from a plastics material or light metal, steel. ### Claim 13 (depends on 1) The cartridge flange as claimed in claim 1, wherein the cartridge flange is formed from a plastics material.