# US 9,751,033 B2 · Liquid filter arrangement; components; and, methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,751,033 B2 - Document ID: US9751033B2 - Status: Granted - Kind: B2 - Application number: 14/471,190 - Filed: 2014-08-28 - Published: 2015-04-02 - Granted: 2017-09-05 - Earliest claimed: 2005-11-15 - Assignees: Donaldson Company, Inc. - Applicants: Donaldson Company, Inc. - Inventors: Brian Mandt; Brent Gulsvig; John Hacker - Web page: https://patentgrep.com/patent/US9751033B2 ## CPC - B01D 35/30: Filter housing constructions - B01D 27/08: Construction of the casing - B01D 29/15: arranged for inward flow filtration - B01D 35/147: Bypass or safety valves - B01D 35/34: open-topped (B01D35/31 takes precedence) - B01D 2201/304: Seals or gaskets - B01D 2201/4046: Means for avoiding false mounting of different parts - B01D 2201/4076: Anti-rotational means - 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 Liquid filter arrangements are described and shown. The arrangements generally include a filter member comprising a shell enclosing a filter cartridge. Unique features for interface between the enclosed filter cartridge and the shell are provided. Also provided are unique features for interaction between the cartridge and a filter head, in use. ## Claims ### Claim 1 A liquid filter member comprising: (a) an outer shell having a sidewall defining an interior, a closed end; and, an open end; (b) a top plate non-removably secured within the shell such that fluid is prevented from passing between the top plate and the shell from the interior of the shell to the exterior of the shell; (i) the top plate having an upper portion and a lower portion; (A) the top plate upper portion having an inwardly threaded region by which the filter member can be mounted on a filter head for use; and, (B) the top plate having an upper tip; (c) an upper lip of the shell being folded over a surface of the top plate upper tip to extend at an acute angle of at least 30° relative to a portion of the sidewall of the outer shell; (d) a seal member positioned between the top plate and the shell; (e) a filter cartridge non-removably positioned within the interior of the shell, positioned with media at a location between a portion of the top plate and the closed end of the shell; (i) the filter cartridge comprising pleated media extending between first and second ends; (ii) the first end having an open end piece thereon; and, (iii) the second end having a closed end piece thereon; and, (f) a radially outwardly directed seal member positioned to form a seal, upon installation, at a location in axial overlap with the first end of the media. ### Claim 2 (depends on 1) A liquid filter member according to claim 1 wherein: (a) the upper lip of the shell is folded to extend at an acute angle of at least 30° relative to a portion of the sidewall of the outer shell. ### Claim 3 (depends on 1) A liquid filter member according to claim 1 wherein: (a) the open end piece comprises a first end cap includes a seal mount positioned thereon, on which the seal member is positioned. ### Claim 4 (depends on 3) A liquid filter member according to claim 3 wherein: (a) the first end cap includes the seal mount non-removably positioned thereon. ### Claim 5 (depends on 4) A liquid filter member according to claim 4 wherein: (a) the seal mount is integrally formed with a remainder of the first end cap. ### Claim 6 (depends on 3) A liquid filter member according to claim 3 wherein: (a) the top plate lower portion includes a radially directed seal-receiving groove therein. ### Claim 7 (depends on 1) A liquid filter member according to claim 1 wherein: (a) the top plate lower portion includes a radially directed seal-receiving groove therein. ### Claim 8 A liquid filter member configured to be threadably mounted on a filter head, the liquid filter member comprising: (a) an outer shell having a sidewall defining an interior and a first, open, end; (b) a filter cartridge non-removably positioned within the interior of the shell; (i) the filter cartridge comprising pleated media extending between first and second end caps; (A) the media defining pleat tip inner and outer perimeters; (ii) the first end cap being an open end cap with a central aperture; (c) an axially outwardly projecting seal mount; (i) the filter cartridge including a seal mounted on the axially outwardly projecting seal mount and configured to form an outwardly directed radial seal against a seal surface supported by the filter head when the liquid filter member is disposed in position for use; and, (ii) the seal mount being positioned to support the seal at a location to form a seal diameter with the seal surface at a location in axial overlap with an end of the media at a location spaced between an inside perimeter of the media and an outside perimeter of the media; and, (iii) the second end cap being closed; and, (d) a top plate non-removably secured within the shell such that fluid is prevented from passing between the top plate and the shell from the interior of the shell to the exterior of the shell, the top plate having an upper portion and a lower portion; (i) the top plate upper portion having an inwardly threaded region by which the filter member can be mounted on a filter head for use; and, (ii) the top plate including: (A) a first region, having the inside threaded region, positioned below the top of the shell; and, (B) a second region extending axially away from the first region and away from the first, open, end of the outer shell. ### Claim 9 (depends on 8) A liquid filter member according to claim 8 wherein: (a) the outer shell has a closed end opposite the first, open, end. ### Claim 10 (depends on 9) A liquid filter member according to claim 9 wherein: (a) the seal mounted on the axially outwardly projecting seal mount comprises an o-ring. ### Claim 11 (depends on 10) A liquid filter member according to claim 10 wherein: (a) the first end cap includes the seal mount positioned thereon. ### Claim 12 (depends on 11) A liquid filter member according to claim 11 wherein: (a) the first end cap includes the seal mount non-removably positioned thereon. ### Claim 13 (depends on 12) A liquid filter member according to claim 12 wherein: (a) the seal mount is integrally formed with a remainder of the first end cap. ### Claim 14 (depends on 10) A liquid filter member according to claim 10 wherein: (a) the top plate lower portion includes a radially directed seal-receiving groove therein. ### Claim 15 (depends on 14) A liquid filter member according claim 14 wherein: (a) the shell includes a lip folded over an end of the top plate.