Patents Assigned to Donaldson Company, Inc.
  • Patent number: 11324238
    Abstract: A method for preparing a filtered beverage includes filtering a raw beverage using a cross-flow ultrafiltration device to produce a solids fraction and a liquid fraction; heating the solids fraction to a temperature of 60° C. or greater to produce a pasteurized solids fraction; microfiltering the liquid fraction through a microfilter having a size cut-off of 1 ?m or smaller to produce a microfiltered liquid fraction; and combining the pasteurized solids fraction and the microfiltered liquid fraction to result in the filtered beverage.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: May 10, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Matthew R. Otterstatter, Prashant V. Shrikhande
  • Publication number: 20220134270
    Abstract: A filter element for filtering a fluid passing through the filter element, the filter element having a fluid entry face and a fluid exit face and is provided with a group of first channels and a group of second channels, through which the fluid to be filtered can flow from the respective first channel into the second channel, that is arranged next to it, wherein a through-channel leads through a filter pack from the fluid entry face to the fluid exit face, which through-channel has an opening at the fluid entry face and/or has an opening at the fluid exit face, wherein an element closes the flow of fluid through through-channel, while leaving a volume open inside the through-channel that is at least 10% of the volume that the through-channel would have without the element, or the element allows the flow of fluid through the through-channel and interacts with the flow of fluid through the through-channel and/or the sidewalls of the through-channel deviate at least in some areas from a cylindrical wall in order
    Type: Application
    Filed: February 3, 2020
    Publication date: May 5, 2022
    Applicant: Donaldson Company, Inc.
    Inventors: Mathijs VERSTRAETE, Bart CATOOR, Michael J. VAN ARSDALE, Michael D. CARLSON
  • Patent number: 11318408
    Abstract: An air cleaner arrangement or assembly is provided. The air cleaner arrangement includes a serviceable filter cartridge. The air cleaner assembly also includes an arrangement for positioning the filter cartridge into a preferred, sealing, orientation and for securing the filter cartridge in that location. Preferred serviceable filter cartridges are provided, as well as methods of assembly and use.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: May 3, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Randall Allen Engelland, Thomas Richard Olson, Gary Ray Gillingham, Jim C. Rothman, Richard Lawrence Suydam
  • Patent number: 11318405
    Abstract: Air cleaner assemblies, related methods, components therefor, and features thereof are described. In depicted examples, the air cleaner assemblies and components optionally use advantageous housing seal features. In some examples, a filter cartridge for an air cleaner includes a media pack extending along a longitudinal axis between opposite inlet and outlet flow ends and defining an outer perimeter with opposite straight sides and a first curved end. The filter cartridge can include a seal arrangement circumscribing the media pack outer perimeter, wherein a portion of the seal arrangement extends beyond a first plane defined by the media pack outlet flow end and a portion of the seal arrangement is disposed between the first plane and a second plane defined by the media pack inlet flow end, wherein the seal arrangement is aligned along a third plane disposed at an oblique angle to the first and second planes.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: May 3, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Steven K. Campbell, Robert D. Johnston, Daniel E. Adamek
  • Publication number: 20220126228
    Abstract: An air cleaner assembly includes a housing and a removable cover. A filter element is removably positioned in the housing. A two-part mating catch assembly includes a first part that is secured to the cover and a second part that is on one of the housing and the filter element.
    Type: Application
    Filed: February 7, 2020
    Publication date: April 28, 2022
    Applicant: Donaldson Company, Inc.
    Inventors: Mathijs VERSTRAETE, Bart CATOOR, William VANAUDENHOVE, Mathieu JONCKHEERE, Benny K. NELSON, David J. BURTON, Steven K. CAMPBELL, Timothy J. WESSELS, Daniel E. ADAMEK
  • Patent number: 11311829
    Abstract: 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.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: April 26, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Benny K. Nelson, Daniel Adamek, David Nelson, Dave Matalamaki
  • Patent number: 11305221
    Abstract: The present disclosure is directed towards filter elements whose overall length can be adjusted such that the filter element can be installed through an opening in an air cleaner opening having a relatively smaller dimension than the maximum dimension of the filter element. In one aspect, the filter element can include a radial seal member disposed on a positionable coupling element circumscribing at least a portion of a filter medium pack. The filter element has a first axial length when the positionable coupling element is in an extended position and has a second axial length when the positionable coupling element is in a collapsed position, wherein the first axial length is greater than the second axial length. In some examples, the filter element includes two positionable coupling elements.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: April 19, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Kristof Decoster, Bart Catoor, Mathijs Verstraete
  • Patent number: 11298645
    Abstract: 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 first face to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered fluid flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered fluid flowing out of the second portion of the plurality of flutes so that fluid passing into one of the first face and the second face of the media pack and out the other face of the media pack passes through media to provide filtration of the fluid.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: April 12, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel E. Adamek, Ming Ouyang, Anitha M. Mathew
  • Patent number: 11298642
    Abstract: An air cleaner assembly is disclosed, along with related methods. In one aspect, the air cleaner assembly has a housing including a housing body and a removable cover that together define an interior volume for holding a filter cartridge. The housing can include a first part of a first connection arrangement. The air filter cartridge can include a second part of the first connection arrangement. In one aspect, the first and second parts can be secured together place the air filter cartridge in a latched position by moving the air filter cartridge in a first direction. In one aspect, the first and second parts can be disconnected from each other to place the air filter cartridge in an unlatched position by moving the air filter cartridge in the first direction. The air cleaner assembly can include a second connection arrangement securing the air filter cartridge to the housing cover such that the housing body and housing cover are secured together.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: April 12, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Steven K. Campbell, Richard Patrick Manahan
  • Patent number: 11298643
    Abstract: According to the present disclosure, features, components and techniques useable for providing air cleaner arrangements are provided. Many of the features relate to an axial seal arrangement provided on a filter cartridge. A typical filter cartridge, for use with these features, is a filter cartridge having opposite flow ends. Example media arrangements that fit this characterization are described. Seal arrangements provided with an axial housing sealing engagement surface are shown. A seal arrangement is provided with variations therein, to advantage. These variations can be in either or both of an outer peripheral edge surface and a housing seal engagement surface. Also, air cleaner assemblies having advantageous features therein are provided. Further, air cleaner housings are described, with selected, preferred features for engagement with filter cartridges.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: April 12, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Steven K. Campbell, Steven S. Gieseke
  • Patent number: 11291943
    Abstract: An air filter media construction or arrangement is disclosed. The air filter media construction or arrangement includes media comprising opposite inlet and outlet flow faces, with a perimeter housing seal. Also described are serviceable filter cartridges and air cleaners including the filter cartridges. Methods of assembly and use are also provided.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: April 5, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Bruce Boehrs, Gregory Reichter, Stephen Sabelko, Paul Wendt
  • Patent number: 11285420
    Abstract: A vent assembly (100) has a vent body (110) defining a first end (104) and a second end (106), a central axis extending from the first end to the second end, and an inner surface defining a cavity. A first retainer extends across the cavity towards the first end of the vent body, and a second retainer (140) extends across the cavity towards the second end of the vent body. The first retainer defines a first retainer opening extending to a first radial distance from the central axis, and the second retainer defines a second retainer opening extending to a second radial distance from the central axis, where the second radial distance is greater than the first radial distance. Coalescing filter media is disposed in the cavity between the first retainer and the second retainer. The coalescing filter media, the cavity, the first retainer, and the second retainer cumulatively define an airflow pathway.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: March 29, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Shannon Lees, Daniel Dotzler, Michael J. Hebert
  • Publication number: 20220080340
    Abstract: A filtration media with improved filtration, strength, tear resistance and air permeability in the form of a relatively thin and lightweight wet-laid fibrous web that has a wet Mullen ratio of 60% to 80% to ensure that the media is flexible enough to be formed into a fluted structure, and strong enough to retain the fluted structure when wound into a roll and to permit further processing without the media becoming too brittle. The filtration media comprises a blend of cellulose and synthetic fibers having a weight percent of 81 wt % to 87 wt % of a weight of the media and a resin binder having a weight of 13 wt % to 19 wt % (preferably about 16 wt %) of the weight of the media.
    Type: Application
    Filed: November 22, 2021
    Publication date: March 17, 2022
    Applicants: AHLSTROM-MUNKSJÖ OYJ, DONALDSON COMPANY, INC.
    Inventors: KEVIN R. SCHOUWEILER, KENT WILLIAMSON, KRISTIN AMSDEN, STEVEN D. SCHMEICHEL
  • Publication number: 20220074482
    Abstract: A panicle catcher for capturing entrained particles in a fluid is disclosed. The particle catcher can include an enclosure defining a flow channel between an inlet and an outlet. Trapping means may be incorporated into the particle catcher. Where provided, the trapping means can be arranged at or near the inlet to allow fluid comprising entrained particles to enter the flow channel through the inlet and to substantially prevent the fluid comprising entrained particles from exiting the flow channel through the inlet. Filtering means may also be incorporated into the particle catcher. Where provided, the filtering means can be arranged at or near the outlet to keep at least some a part of the entrained particles from exiting the flow channel through the outlet.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 10, 2022
    Applicant: Donaldson Company, Inc.
    Inventors: Enrico GRECO, Fabrizio BURATTO
  • Patent number: 11260331
    Abstract: 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 surrounding the media pack, the frame member including a frame wall having a shape that is different from the outer perimeter shape of the media pack; and (b) a shell at least partially surrounding the media pack, the shell including a shell wall having a shape that is different from the outer perimeter shape of the media pack, and a sealing member extending at least partially around the inlet end of the media pack, wherein the sealing member connects the media pack to at least one of the frame member and the shell.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: March 1, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: David J. Burton, Hubert J. Rahn
  • Publication number: 20220054962
    Abstract: A filter element for filtering a fluid comprising a filter medium pack having an axial inlet side for receiving the unfiltered fluid and a circumferential side forming a radial boundary of the filter medium pack. The filter medium pack is configured for insertion into a housing of a filter system so as to enclose or partly enclose the circumferential side of the filter medium pack with an outer sidewall of the housing. The filter element comprises a bridge seal arrangement having a first collar-shaped portion comprising a first circumferential sealing surface sealingly coupled to the circumferential side of the filter medium pack or sealingly coupled to a border of the axial inlet side, and a second collar-shaped portion comprising a second circumferential sealing surface configured for encircling and sealingly cooperating with the outer sidewall of the housing.
    Type: Application
    Filed: January 8, 2020
    Publication date: February 24, 2022
    Applicant: Donaldson Company, Inc.
    Inventors: Bart CATOOR, Mathijs VERSTRAETE
  • Patent number: 11253802
    Abstract: Fibrous filter medium that includes a melt-blown filter layer comprising melt-blown fibers and a high-efficiency glass-containing filter layer comprising glass fibers.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: February 22, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Qiong Gao, Gregory S. Tronnes, Rakesh Kumar Yadav, Michael A. Madden
  • Patent number: 11247161
    Abstract: A support structure for an interior volume of a construction of pleated media is operably oriented in the interior volume and structurally supports the media. The support structure can pass directly through an innermost 60% of the interior volume. It can have a void volume not more than 80%. It can be inner liner-free and extend in a non-curved path. It can include a first sheet and second sheet of porous material. At least a first brace construction secures the first sheet and second sheet together and in spaced apart, opposing relation. The support structure can include a pleated construction having pleats extending in a direction non-parallel and angled to the direction of pleats of the pleated filter media. The support structure can be molded spacers.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: February 15, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Philip Edward Johnson, Gregory L. LaVallee, Janelle M. Hampton, Daniel E. Adamek, Jonathan G. Parsons, Richard Osendorf
  • Patent number: 11235274
    Abstract: 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 positioned appropriately in the housing for use.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: February 1, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Robert Wood, Gert Willems
  • Patent number: 11224833
    Abstract: A two-stage separator system having a housing extending between a first end and a second end. The housing defines a housing inlet, a separator outlet towards the second end, and a filtration outlet on the first end. A filter assembly has a first sheet of filter media coupled to a second sheet of filter media mutually defining a plurality of flutes extending in an axial direction. The filter assembly defines an inlet flow face and an outlet flow face. The filter assembly is disposed in the housing and coupled to the housing about the filtration outlet such that the outlet flow face is in fluid communication with the filtration outlet. The inlet flow face of the filter assembly has an axial flow face length.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: January 18, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Steven K. Campbell, Mark A. Sala