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Donaldson Company Inc
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Donaldson Company Inc patents


Recent patent applications related to Donaldson Company Inc. Donaldson Company Inc is listed as an Agent/Assignee. Note: Donaldson Company Inc may have other listings under different names/spellings. We're not affiliated with Donaldson Company Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "D" | Donaldson Company Inc-related inventors


Materials, methods, and devices for siloxane contaminant removal

Adsorbent materials are disclosed, along with filter elements containing the adsorbent materials methods of using adsorbents to remove slioxane contaminants from a gas stream. The method includes providing an adsorbent material that has been washed with an acid and passing a gas through the adsorbent material so as to reduce... Donaldson Company Inc

Filter systems with dirty air chamber spacer elements and methods of using the same

Filter systems and methods described herein include one or more spacer elements positioned in the dirty air chamber along with the filter elements attached to the spacer elements. The dirty air inlet delivers a dirty air stream into the dirty air chamber along a dirty air flow axis.... Donaldson Company Inc

Barrier vent assembly

The technology disclosed herein relates to a vent assembly having a vent housing that defines a first airflow pathway, a second airflow pathway, and a third airflow pathway. The first airflow pathway is configured for fluid communication with an interior of an enclosure. The second airflow pathway is configured for... Donaldson Company Inc

Filter element and support structure

The current technology relates to a filter element having pleated filter media. The pleated filter media defines an elongate tubular structure having an inner passageway. The pleated filter media has outer pleat folds and inner pleat folds each extending from a first end to a second end of the elongate... Donaldson Company Inc

Seal arrangement for filter element; filter element assembly; and, methods

A filter cartridge arrangement is provided which includes a media pack comprising Z-filter media, a preform and a housing seal member. Improvements in the preform and seal member are described which include: a single beveled surface of the seal member to facilitate installation; and, an inside region of the seal... Donaldson Company Inc

Air cleaner assemblies

A filter cartridge configured to be removably positionable within an inner opening of a housing, wherein the filter cartridge includes a media pack having an inlet end, an outlet end, and an outer surface having an outer peripheral shape, at least one of: (a) a frame member at least partially... Donaldson Company Inc

Dosing and mixing arrangement for use in exhaust aftertreatment

A method for causing exhaust gas flow to flow at least 270 degrees in a first direction about a perforated tube using a baffle plate having a main body with a plurality of flow-through openings and a plurality of louvers positioned adjacent to the flow-through openings. The method includes deflecting... Donaldson Company Inc

Pulse jet air cleaner systems, components, and, methods

Pulse jet air cleaner systems, components and methods are described. The features relate to air cleaner housings that include a cartridge receiving section. Features described relate to a possible two-stage construction, a possible pulse jet accumulator section, pulse jet equipment for cleaning a filter cartridge positioned within the air cleaner;... Donaldson Company Inc

Filter cartridge with seal member and methods

An air filter cartridge has Z-media and a gasket arrangement with a perimeter gasket member against the downstream flow face and a side gasket member adjacent to at least a partial extension of a first side panel. The side gasket member includes no portion against second, third, and fourth side... Donaldson Company Inc

Air cleaner assemblies and methods of use

Air cleaner assemblies, components therefor, and features thereof are described. Also described are methods of assembly and use. In depicted examples, the air cleaner assemblies and components optionally use advantageous housing seal features. Methods of assembly and use are described.... Donaldson Company Inc

Liquid filter arrangement; components; and, methods

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... Donaldson Company Inc

Filter cartridge; components thereof; and methods

Z-filters capable of cleaning particulate matter from airflow streams in dust collectors, including reverse flow, reverse air, and reverse pulse systems.... Donaldson Company Inc

Filter element for pulse cleaning and methods

A filter element includes a media pack of Z-media having first and second opposite flow faces and a side wall extending between the first and second flow face. A gasket is secured to the side wall. The gasket has a sealing portion and an attachment portion. The sealing portion has... Donaldson Company Inc

Pulse jet air cleaner systems; evacuation valve arrangements; air cleaner components; and, methods

Assemblies, features, and techniques for pulse jet air cleaner assemblies and their operation are described. Techniques described include methodology and equipment for preferred pulse jet sequencing and operation.... Donaldson Company Inc

Custom water adsorption material

The technology disclosed herein is directed to controlling humidity levels, such as the humidity level in an enclosed environment. The water isotherm of the adsorbent material is customized through the modification of the surface chemistry of the adsorbent. By modifying the surface chemistry of the adsorbent in various ways and... Donaldson Company Inc

Filtration media packs comprising plurality of bosses between filter media, filter elements, and methods for manufacturing

The present disclosure relates to filtration media packs, filter elements, and methods for manufacturing filtration media packs and filter elements. The present disclosure is directed to filtration media packs having alternating first media sheet and second media sheet secured together and forming a first flow face and a second flow... Donaldson Company Inc

Recirculation filter for an enclosure

The technology disclosed herein relates to filter assemblies and methods of making filter assemblies. One filter assembly has a first sheet of filter media having a first perimeter region and a second sheet of filter media having a second perimeter region. The first perimeter region and the second perimeter region... Donaldson Company Inc

Air cleaner arrangement with end support for cartridge; components; and, methods

An air cleaner assembly is described and shown which includes a housing having an air flow inlet, an air flow outlet and a housing body and access cover. A serviceable filter cartridge is positioned within the housing. A projection/receiver arrangement providing for engagement between the cartridge and the housing is... Donaldson Company Inc

Fine fiber media layer

Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.... Donaldson Company Inc

Filter arrangement having burst disc arrangement

A filter arrangement includes a first filter media construction having a burst disc arrangement that is triggerable to rupture and open a flow path through the media construction. The first filter media construction can be oriented within the interior volume of a second filter media construction.... Donaldson Company Inc

Pleated tank vent

The technology disclosed herein relates to a tank vent having a housing and a pleated, vapor-permeable microporous membrane. The housing defines a first vapor passageway configured for direct communication with a tank interior and a second vapor passageway configured for direct communication with the atmosphere. The housing also defines a... Donaldson Company Inc

Liquid filter arrangement and methods

A filter cartridge can be used in a filter assembly for a system in an in tank filter for a hydraulic return filter. The filter assembly includes a safety construction to ensure that a cover is not place over the bowl of the filter assembly, without a filter cartridge mounted... Donaldson Company Inc

Filter arrangement; sealing system; and methods

A filter pack includes a filter construction and a sealing system for sealing the construction within a duct or housing. The filter construction has first and second opposite flow faces and is configured for a straight-through flow. The sealing system includes a frame construction and a compressible seal member. The... Donaldson Company Inc

Dosing and mixing arrangement for use in exhaust aftertreatment

Dosing and mixing exhaust gas includes directing exhaust gas towards a periphery of a mixing tube that is configured to direct the exhaust gas to flow around and through the mixing tube to effectively mix and dose exhaust gas within a relatively small area. Some mixing tubes include a slotted... Donaldson Company Inc

Filter elements; air cleaner; assembly; and, methods

A filter cartridge, a safety element and fluid cleaner assembly are described. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The filter cartridge generally comprises z-filter media, arranged in a straight through configuration. Preferred cartridges include a seal gasket positioned to... Donaldson Company Inc

Housing for filter element; filter element; methods of use and making

A filter assembly includes a filter head and filter cartridge. The filter cartridge includes a housing and element. The housing includes a can with an open mouth. An interface ring is secured to the can adjacent to the open mouth. The outer ring surface is against the inner wall of... Donaldson Company Inc

Air cleaner; replaceable filter cartridges; and, methods

An air cleaner assembly, a main filter element, a safety element, combinations and methods for servicing an air cleaner assembly are provided according to the present invention. The air cleaner assembly includes an air cleaner housing and a main filter element. The air cleaner housing includes a safety liner that... Donaldson Company Inc

Filtration media pack, filter elements, and air filtration media

A filtration media pack including a plurality of layers of filter media is disclosed. The media pack includes fluted sheets and a facing sheet, with a plurality of flutes extending between the fluted sheets and the facing sheets. In an embodiment, the fluted sheet includes a plurality of protrusions that... Donaldson Company Inc

Liquid filter arrangement and methods

A filter cartridge includes a threaded sleeve having a seal holder recess and seal member. The filter cartridge is for removably threading onto a filter head that includes threads for connection to the filter cartridge by way of the threaded sleeve. The filter head includes a ramp that engages the... Donaldson Company Inc

Filter element having inner support and methods

A filter element includes a construction of pleated filter media defining an interior volume. First and second opposite end caps are secured to opposite ends of the filter media. A support structure supports the filter media and is operably oriented in the interior volume. The support structure extends from the... Donaldson Company Inc

Filter elements, air cleaner assemblies, and methods of use and assembly

Air cleaner assemblies, components therefor, and features thereof are described. Also described are methods of assembly and use. In depicted examples, the air cleaner assemblies and components optionally use advantageous housing seal features. Methods of assembly and use are described.... Donaldson Company Inc

Assemblies; components and filter features thereof; and, methods of use and assembly

Air cleaner assemblies, components therefor, and features thereof are described. Also described are methods of assembly and use. In depicted examples, the air cleaner assemblies and components optionally use advantageous housing seal features. Methods of assembly and use are described.... Donaldson Company Inc

Air filter assembly; components thereof; and, methods

An air filter cartridge for use with an air cleaner assembly is provided. A variety of features for the air filter cartridge are characterized. An example air filter cartridge is depicted, which includes opposite flow faces. A preform secured to the media pack, with a seal member is described. An... Donaldson Company Inc

Filter medium and breather filter structure

Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can... Donaldson Company Inc

Filtration media, pleated media pack, filter cartridge, and methods for manufacturing

Filter media is described that includes a filtration substrate having a first side and a second side, and constructed for filtering a fluid by flow of the fluid therethrough from the first side to the second side or from the second side to the first side. The filtration substrate has... Donaldson Company Inc

08/03/17 / #20170216758

Air filtration media pack, filter element, air filtration media, and methods

An air filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from... Donaldson Company Inc

07/27/17 / #20170210835

Styrene-containing copolymer fibers, filter media, elements, and methods

Fibers, filter media, and filter elements, particularly for liquid filtration applications, that include a styrene-containing copolymer, particularly a styrene-maleic anhydride copolymer, a styrene-maleimide copolymer, a styrene-maleic acid ester copolymer, or a combination thereof.... Donaldson Company Inc

07/20/17 / #20170203246

Filter elements; air filter arrangements; and, methods

Filter elements are described. In an example embodiment, the filter element has a support framework and media defining a closed end and an open end. A non-circular radial seal is depicted, in an example. Variations for particular applications are described.... Donaldson Company Inc

07/13/17 / #20170197163

Styrene-acrylonitrile fine fibers, filter media, recirculation filters, and methods

The present disclosure provides styrene/acrylonitrile fine fibers, filter media including styrene/acrylonitrile fine fibers, a recirculation filter including a styrene/acrylonitrile fine fiber or filter media, and methods.... Donaldson Company Inc

07/06/17 / #20170189845

Ovate tubular filter cartridges and filter systems using the same

Filter cartridges including tubular filter media having ovate cross-sections and filter systems using the ovate tubular filter cartridges are described herein. The inner perimeters of the ovate cross-sections of one or more of the filter cartridges may be asymmetric, i.e., the inner perimeters of the cross-sections of the tubular filter... Donaldson Company Inc

07/06/17 / #20170191399

Integrated exhaust treatment device having compact configuration

An exhaust treatment device is disclosed. The exhaust treatment device has a compact configuration that includes integrated reactant dosing, reactant mixing and contaminant removal/treatment. The mixing can be achieved at least in part by a swirl structure and contaminant removal can include NOx reduction.... Donaldson Company Inc

06/29/17 / #20170182443

Air filter arrangement; assembly; and, methods

Air filter cartridges are disclosed. Also described are air cleaners including the filter cartridges. Methods of assembly and use are also provided. Also, systems of use are described.... Donaldson Company Inc

06/29/17 / #20170182444

Filter cartridge with seal member and methods

An air filter cartridge has Z-media and a gasket arrangement with a perimeter gasket member against the downstream flow face and a side gasket member adjacent to at least a partial extension of a first side panel. The side gasket member includes no portion against second, third, and fourth side... Donaldson Company Inc

06/22/17 / #20170173512

Filter elements with end cap features; element support assembly; and methods

A yoke arrangement is provided including three leg assemblies connected together to releasably mount a filter assembly to a tube sheet. The filter assembly can include a filter element having a first end cap that acts as a spring. The filter assembly can have filter elements with end caps having... Donaldson Company Inc

06/22/17 / #20170178695

Recirculation filter for an electronic enclosure

The technology disclosed herein relates to filter assemblies and methods of making filter assemblies. One filter assembly has a first sheet of filter media having a first perimeter region and a second sheet of filter media having a second perimeter region. The first perimeter region and the second perimeter region... Donaldson Company Inc

06/08/17 / #20170157543

Fine fibers made from polymer crosslinked with resinous aldehyde composition

A fine fiber can be made having a structure with an axial core and a coating layer. The fiber can have a polymer core and one or two layers surrounding the core. The fine fiber can be made from a polymer material and a resinous aldehyde (e.g., melamine-aldehyde) composition such... Donaldson Company Inc

06/08/17 / #20170157549

Filter cartridge

According to the present disclosure, arrangements, systems, components, features and methods for filtration are described. The components specifically described include a filter cartridge with preferred features for interaction with a filter housing, and a filter housing with preferred features for convenient installation. Methods of assembly and use are also characterized.... Donaldson Company Inc

06/01/17 / #20170151515

Web comprising fine fiber and reactive, adsorptive or absorptive particulate

The assemblies of the invention can comprise a fine fiber layer having dispersed within the fine fiber layer an active particulate material. Fluid that flows through the assemblies of the invention can have any material dispersed or dissolved in the fluid react with, be absorbed by, or adsorbed onto, the... Donaldson Company Inc

05/04/17 / #20170120180

Crankcase ventilation filter systems; components; features; and, methods of assembly and use

Filter assemblies are described and shown. Components, features and methods of assembly and use are described. Many of the principles relate to preferred cartridge configurations for engagement with selected housings. Selected optional features described can be used to provide indication to a service provider that a proper cartridge is not... Donaldson Company Inc

03/30/17 / #20170087491

Spin-on filter with external threads and methods

A filter arrangement for threadably securing to a filter head includes a housing having a surrounding wall defining an interior volume, an open mouth providing access to the interior volume and an end opposite of the open mouth. The surrounding wall has an exterior and an interior. A filter media... Donaldson Company Inc

03/30/17 / #20170087492

Spin-on filter with external threads and methods

A filter arrangement for threadably securing to a filter head includes a housing having a surrounding wall defining an interior volume, an open mouth providing access to the interior volume and an end opposite of the open mouth. The surrounding wall has an exterior and an interior. A filter media... Donaldson Company Inc

03/23/17 / #20170082004

Dosing and mixing arrangement for use in exhaust aftertreatment

A dosing and mixing arrangement including an exhaust conduit defining a central axis; a mixing conduit positioned within the exhaust conduit; a dispersing arrangement (e.g., a mesh) disposed at the upstream end of the mixing conduit; an injector coupled to the exhaust conduit and configured to direct reactants into the... Donaldson Company Inc

03/02/17 / #20170056803

Filter element for pulse cleaning and methods

A filter element includes a media pack of Z-media having first and second opposite flow faces and a side wall extending between the first and second flow face. A gasket is secured to the side wall. The gasket has a sealing portion and an attachment portion. The sealing portion has... Donaldson Company Inc

02/23/17 / #20170050139

Seal arrangement for filter element; filter element assembly; and, methods

A filter element arrangement is provided which includes a media pack comprising Z-filter media, a preform and an overmold sealing a portion of the interface between the preform and the media pack, and also forming an air cleaner seal for the filter element. The overmold preferably comprises molded, foamed, polyurethane.... Donaldson Company Inc

02/16/17 / #20170044958

Exhaust aftertreatment device

An exhaust treatment device for treating exhaust includes a main body defining an interior, an inlet, and an outlet; an inlet arrangement disposed at the inlet; an aftertreatment substrate disposed between the inlet and the outlet; a restrictor arrangement disposed between a first closed end of the main body interior... Donaldson Company Inc

02/09/17 / #20170036150

Filter assemblies; components and features thereof; and, methods of use and assembly

Filter assemblies, components therefor, and features thereof are described. Also described are methods of assembly and use. In depicted examples, the air cleaner assemblies and components use advantageous housing seal features. Also, methods of assembly and use are described.... Donaldson Company Inc

02/09/17 / #20170036151

Recirculation filter for an electronics enclosure

One aspect of the technology relates to a recirculation filter. The recirculation filter has a first outer layer defining at least a portion of a first flow face of the recirculation filter, where the first flow face is configured to be positioned adjacent to a sensitive component in an electronics... Donaldson Company Inc

02/09/17 / #20170036156

Filter arrangements; housings; assemblies; and, methods

Air cleaner and preferred components for an air cleaner are provided. In certain arrangements, a band is mounted to the media pack, surrounding the media. Also, the cartridge is non-circular and includes a seal thereon.... Donaldson Company Inc

02/02/17 / #20170028322

Liquid filter assemblies; features; components; and, methods

Liquid filter assemblies, features, components and methods are described. In general, a liquid filter cartridge is provided which includes features that help ensure that when the assembly is serviced, the cartridge positioned within the assembly is a proper one, in proper sealing orientation, for appropriate use. Features that can be... Donaldson Company Inc

02/02/17 / #20170028339

Self-supporting folded sheet material, filter elements, and methods

A pleated media pack includes a section of media configured into a tube defining an interior volume and an open opening at one end. At least some of the pleats at both ends of the media pack are inverted. In some examples, the pleats include major pleats alternating with minor... Donaldson Company Inc

02/02/17 / #20170028340

Air filter arrangement; assembly; and, methods

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.... Donaldson Company Inc

02/02/17 / #20170028341

Filtration media pack, filter element, and methods

A filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a... Donaldson Company Inc

02/02/17 / #20170028342

Filter for humidity control, typically for control of humidity in a bulk liquid tank

A filter is includes a housing and at least first and second adsorbent materials within the housing. The second adsorbent material has different characteristic from the first adsorbent material and is in series with the first adsorbent material. When assembled, a labyrinth arrangement is located between a first port in... Donaldson Company Inc

01/26/17 / #20170021295

Fuel filter assembly, filter element and draining water from a fuel filter assembly

The disclosure relates to a fuel filter assembly, a filter element, and a method of draining water from a fuel filter assembly. The fuel filter assembly comprises a filter element with a water collecting space; the filter element being connected to a fuel pipe for feeding an upstream side of... Donaldson Company Inc

01/26/17 / #20170025237

Swivel actuating pressure switch

Swivel actuating pressure switching devices and methods are described herein that include a shorting member that translates and rotates into contact with one or more terminals in response to the application of a specified pressure to a piston included in the switch. The rotation of the shorting member with respect... Donaldson Company Inc

Patent Packs
01/19/17 / #20170014734

Fluid filter system

An endcap including a first plate member including a radial inner portion, a radial outer portion, and defining a longitudinal axis. The endcap also includes a flange disposed between the radial inner and outer portions of the first plate member and projecting axially along the longitudinal axis in a first... Donaldson Company Inc








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