# US 2019/0168141 A1 · Filter housing that accepts both single open end o-ring and double open end filter elements > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0168141 A1 - Document ID: US20190168141A1 - Status: Published application - Kind: A1 - Application number: 16/209,745 - Filed: 2018-12-04 - Published: 2019-06-06 - Earliest claimed: 2017-12-04 - Assignees: Parker-Hannifin Corporation - Inventors: Steven T. Yoshimura - Web page: https://patentgrep.com/patent/US20190168141A1 ## CPC - B01D 35/303: {the housings being modular, e.g. standardised} - B01D 29/17: open-ended {the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element} - B01D 29/23: arranged for outward flow filtration - B01D 29/56: in series connection - B01D 29/96: in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters (B01D29/09, B01D29/70 take precedence) - B01D 35/023: {Filler pipe filters} - B01D 35/30: Filter housing constructions - B01D 35/301: {Constructions of two or more housings (B01D35/12 takes precedence)} - B01D 2201/29: Filter cartridge constructions - B01D 2201/291: End caps - B01D 2201/301: Details of removable closures, lids, caps, filter heads - B01D 2201/303: not arranged concentrically - B01D 2201/304: Seals or gaskets - B01D 2201/306: Closures, lids, caps or filter heads forming one element with the filtering element - B01D 2201/307: Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element - B01D 2201/31: Other construction details - B01D 2201/342: Axial sealings - B01D 2201/347: Radial sealings - 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 housing assembly, portable filter system using the housing assembly and methods of mounting a filter element in a housing assembly are provided. The housing assembly is usable with filter elements of different types. The housing assembly includes a housing body having an open end and being attached to a filter head. The filter head includes a first housing sealing interface configured to sealingly mate with a filter element of the first type and a second housing sealing interface configured to sealingly mate with a filter element of the second type. A cover member removably attaches to the housing body and includes a third housing sealing interface configured to sealingly mate the filter element of the second. ## Claims ### Claim 1 A filter housing assembly for use with a first type of filter element having a first sealing interface at a first end of a first tube of filter media and alternatively for use with a second type of filter element having a second sealing interface at a first end of a second tube of filter media and having a third sealing interface at a second end of the second tube of filter media, the first sealing interface being configured differently than the second sealing interface, the filter housing assembly comprising: an housing body extending axially between a first end and an open second end, the housing body defining a filter element mounting cavity; a filter head being at the first end of the housing body, the filter head including: a first housing sealing interface configured to sealingly mate with a first sealing interface when a filter element of the first type is located within the filter element mounting cavity; a second housing sealing interface configured to sealingly mate with a second sealing interface when a filter element of the second type is located within the filter element mounting cavity; and a cover member removably attachable to the second end of the housing body, the cover member including a third housing sealing interface configured to sealingly mate with a third sealing interface when the filter element of the second type is located within the filter element mounting cavity. ### Claim 2 (depends on 1) The filter housing assembly of claim 1, wherein the first and second housing sealing interfaces are provided by a first annular wall, one of the first and second housing sealing interfaces being provided by a radially directed surface of the first annular wall, the other one of the first and second housing sealing interfaces being provided by an axially facing annular surface of the first annular wall, the axially facing annular surface axially facing the cover member. ### Claim 3 (depends on 2) The filter housing assembly of claim 2, wherein the third housing sealing interface is an axially facing surface provided by the cover member axially facing the first end. ### Claim 4 (depends on 3) The filter housing assembly of claim 3, wherein the third housing sealing interface is provided by an annular rib projecting axially towards the filter head. ### Claim 5 (depends on 2) The filter housing assembly of claim 2, wherein the first housing sealing interface is provided by the radially directed surface of the first annular wall and the radially directed surface of the first annular wall is a radially inward directed surface. ### Claim 6 (depends on 5) The filter housing assembly of claim 5, wherein: a first port is provided by a second annular wall that is concentric with the first annular wall; the first and second annular walls defining an annular channel radially therebetween; and the radially directed surface radially faces inward toward the second annular wall. ### Claim 7 (depends on 5) The filter housing assembly of claim 5, wherein the annular surface has an inner diameter of between about 1.7 and 1.8 inches. ### Claim 8 (depends on 7) The filter housing assembly of claim 7, wherein the axially facing annular surface of the first annular wall that provides the second housing sealing interface is dimensioned to contact a second sealing interface of a filter element of the second type having an inner diameter of 1.25 inches and an outer diameter of 2.5 inches. ### Claim 9 (depends on 5) The filter housing assembly of claim 5, wherein the second housing sealing interface is provided by a tapered end portion of the first annular wall. ### Claim 10 (depends on 1) The filter housing assembly of claim 1, wherein: the housing body provides a threaded region and a radially inward directed annular sealing surface having a first axial dimension; the cover member has an axially extending neck that is received axially within the second end of the housing body, the neck has a threaded region configured to engage the threaded region of the housing body, the neck carrying a radially directed cover seal member; the radially directed cover seal member radially engageable with the radially inward directed annular sealing surface along the first axial dimension such that the axial position of the cover member may be adjusted relative to the housing body to accommodate different length filter elements within the housing body with the radially inward directed annular sealing surface remaining in sealing engagement with the radially directed cover seal member. ### Claim 11 (depends on 10) The filter housing assembly of claim 10, wherein the axial position of the cover may be adjusted by at least 0.125 inches relative to the housing body with the radially inward directed annular sealing surface remaining in sealing engagement with the radially directed cover seal member. ### Claim 12 (depends on 10) The filter housing assembly of claim 10, wherein: the housing body is provided by an axially extending annular pipe extending between first and second ends and an annular collar member; the first end is adjacent the filter head and the second end of the annular pipe is attached to the annular collar member, the annular collar member defining the open second end of the housing body; and the cover member removably attaches to the collar member. ### Claim 13 (depends on 1) The filter housing assembly of claim 1, wherein the housing body includes a radially extending projection defining an axial abutment; and the radially extending projection and axial abutment are axially offset from the open second end toward the first end. ### Claim 14 (depends on 6) The filter housing assembly of claim 6, wherein the first and second housing sealing interfaces surround, at least part of, the first port. ### Claim 15 A fluid filtering apparatus for use with a filter element, the apparatus comprising: a containment enclosure defining an enclosed volume defined at least in part by a first sidewall, the first sidewall including a first access opening, the containment enclosure including a dirty fluid inlet and a clean fluid outlet; a filter housing assembly located within the containment enclosure, the filter housing assembly including: an housing body extending axially between a first end and an open second end, the housing body defining a filter element mounting cavity, the open second end cooperating with the first access opening such that the filter element mounting cavity is accessible from the exterior of the containment enclosure through the first access opening and the open second end; a filter head being at the first end of the housing body, the filter head including: a first port in fluid communication with the filter element mounting cavity, a second port in fluid communication with the filter element mounting cavity; and one of the first and second ports being in operable fluid communication with the dirty fluid inlet and the other one of the first and second ports being in operable fluid communication with the clean fluid outlet; a cover member removably attachable to the second end of the housing body, the cover member closing all or a portion of the first access opening when it is attached to the housing body. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the filter housing assembly is configured for use with a first type of filter element having a first sealing interface at a first end of a first tube of filter media and alternatively for use with a second type of filter element having a second sealing interface at a first end of a second tube of filter media and having a third sealing interface at a second end of the second tube of filter media, the first sealing interface being configured differently than the second sealing interface, the filter housing assembly further comprising: a first housing sealing interface configured to sealingly mate with a first sealing interface of the filter element when the filter element is of the first type and is located within the filter element mounting cavity; a second housing sealing interface configured to sealingly mate with a second sealing interface of the filter element when the filter element is of the second type and is located within the filter element mounting cavity; and the cover member further including a third housing sealing interface configured to sealingly mate with a third sealing interface of the filter element when the filter element is of the second type and is located within the filter element mounting cavity. ### Claim 17 (depends on 15) The apparatus of claim 15, wherein the housing body includes a radially extending projection defining an axial abutment that abuts an inner surface of the first sidewall surrounding the access opening. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein: the radially extending projection and axial abutment are axially offset from the open second end toward the first end; and a portion of the housing body axially between the axial abutment and the second end extends axially through the first access opening. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the cover member includes an axially extending neck that extends axially through the open second end and the first access opening when the cover member is attached to the housing body. ### Claim 20 (depends on 15) The apparatus of claim 15, wherein: the housing body has a threaded region that engages a threaded region of the neck to secure the cover member to the housing body; the open second end has an inner diameter; the cover member has a maximum diameter that is smaller than the inner diameter of the second end; and the cover member being receivable completely axially into the housing body. ### Claim 21 (depends on 20) The apparatus of claim 20, wherein the cover member includes a closed end and an axially extending neck extending axially from the closed end, the axially extending neck extends axially through the open second end when the cover member is attached to the housing body, the closed end including a handle sized for a user's hand to grip the cover member for attaching the cover member to or detaching the cover member from the housing body, the handle defined in part by axially recessed pockets formed by the closed end. ### Claim 22 (depends on 15) The apparatus of claim 15, wherein at least 80% of a volume defined by the filter head, filter housing body and the cover is located within the containment enclosure. ### Claim 23 (depends on 1) A method of mounting a filter element in a filter housing assembly, the method comprising: inserting a filter element into a filter housing assembly according to claim 1, the filter element being of the first type or of the second type; sealingly engaging the filter element to the filter head, which includes: engaging the first sealing interface with the first housing sealing interface if the filter element is of the first type; engaging the second sealing interface with the second housing sealing interface if the filter element is of the second type; and attaching the cover member to the housing body to close the second end of the housing body. ### Claim 24 (depends on 23) The method of claim 23, further comprising engaging the third housing sealing interface with the third sealing interface if the filter element is of the second type. ### Claim 25 (depends on 23) The method of claim 23, wherein the first housing sealing interface is left unused if the filter element is of the second type and the second housing sealing interface is left unused if the filter element is of the first type. ### Claim 26 (depends on 23) The method of claim 23, wherein the filter housing assembly is located within a containment enclosure of a fluid filtering apparatus, the containment enclosure defining an enclosed volume defined at least in part by a first sidewall, the first sidewall including a first access opening that cooperates with the open second end such that the filter element mounting cavity is accessible from the exterior of the containment enclosure through the first access opening and the open second end; and the step of inserting a filter element into the filter housing assembly includes passing the filter element through both the access opening and the open second end.