Patents by Inventor Thomas John Lundgren

Thomas John Lundgren has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11185810
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: November 30, 2021
    Assignee: Donaldson Company, Inc.
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Publication number: 20200254376
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Application
    Filed: January 16, 2020
    Publication date: August 13, 2020
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Patent number: 10556202
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: February 11, 2020
    Assignee: Donaldson Company, Inc.
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Publication number: 20180126317
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Application
    Filed: September 14, 2017
    Publication date: May 10, 2018
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Patent number: 9782713
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: October 10, 2017
    Assignee: Donaldson Company, Inc.
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Patent number: 9737839
    Abstract: A filter cartridge for use in separating a hydrophobic liquid aerosol phase from a gas stream, as a crankcase ventilation filter for example, is described. The cartridge includes a media pack comprising filtration media surrounding an open interior and a first end piece. Various structure included on the first end piece is described. An example is a D-shaped projection. Also described is an assembly including the filter cartridge, specific features of a housing component of the assembly. Methods of assembly and use are also described.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: August 22, 2017
    Assignee: Donaldson Company, Inc.
    Inventors: Thomas John Lundgren, Bradley Hemish, Daniel Adamek, Wade Mosset
  • Publication number: 20160136562
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Application
    Filed: September 15, 2015
    Publication date: May 19, 2016
    Inventors: Larry R. Nepsund, Bradley a. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Patent number: 9162172
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: October 20, 2015
    Assignee: Donaldson Company, Inc.
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Publication number: 20140245705
    Abstract: A filter cartridge for use in separating a hydrophobic liquid aerosol phase from a gas stream, as a crankcase ventilation filter for example, is described. The cartridge includes a media pack comprising filtration media surrounding an open interior and a first end piece. Various structure included on the first end piece is described. An example is a D-shaped projection. Also described is an assembly including the filter cartridge, specific features of a housing component of the assembly. Methods of assembly and use are also described.
    Type: Application
    Filed: May 9, 2014
    Publication date: September 4, 2014
    Applicant: Donaldson Company, Inc.
    Inventors: Thomas John Lundgren, Bradley Hemish, Daniel Adamek, Wade Mosset
  • Patent number: 8758467
    Abstract: A filter cartridge for use in separating a hydrophobic liquid aerosol phase from a gas stream, as a crankcase ventilation filter for example, is described. The cartridge includes a media pack comprising filtration media surrounding an open interior and a first end piece. Various structure included on the first end piece is described. An example is a D-shaped projection. Also described is an assembly including the filter cartridge, specific features of a housing component of the assembly. Methods of assembly and use are also described.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: June 24, 2014
    Assignee: Donaldson Company, Inc.
    Inventors: Thomas John Lundgren, Bradley Allen Hemish, Daniel Eric Adamek, Wade Stephen Mosset
  • Publication number: 20140102057
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Application
    Filed: September 10, 2013
    Publication date: April 17, 2014
    Applicant: Donaldson Company, Inc.
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Patent number: 8562707
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: October 22, 2013
    Assignee: Donaldson Company, Inc.
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Publication number: 20130239530
    Abstract: An air filter arrangement is disclosed. The air filter arrangement includes media comprising corrugated media secured to facing media and forming inlet and outlet flutes secured to one another. Media pack arrangements including such media are described. Also described are filter cartridges including such media packs and air cleaners including the filter cartridges. Advantageous housing seal arrangements having a pinch seal member and forming a trough are described. Methods of assembly and use are also provided. Also, systems of use are described.
    Type: Application
    Filed: September 14, 2012
    Publication date: September 19, 2013
    Applicant: Donaldson Company Inc.
    Inventors: Gregory L. REICHTER, Wayne R.W. BISHOP, Benny Kevin NELSON, Darrel WEGNER, Bruce R. CRENSHAW, Vladimir KLADNITSKY, Thomas G. MILLER, Donald Raymond MORK, Kevin J. SCHRAGE, Richard J. OSENDORF, Bradley A. KUEMPEL, Thomas John LUNDGREN
  • Publication number: 20130239529
    Abstract: An air filter arrangement is disclosed. The air filter arrangement includes strips of media comprising fluted sheets secured to facing sheets and forming inlet and outlet flutes secured to one another in a stack. Media pack arrangements including such stacked media with peripheral, perimeter, housing seal arrangements are described. Also described are air cleaners including the filter cartridges. Methods of assembly and use are also provided. Also, systems of use are described.
    Type: Application
    Filed: September 14, 2012
    Publication date: September 19, 2013
    Applicant: Donaldson Company, Inc.
    Inventors: Gregory L. Reichter, Wayne R.W. Bishop, Benny Kevin Nelson, Darrel Wegner, Bruce R. Crenshaw, Vladimir Kladnitsky, Thomas G. Miller, Donald Raymond Mork, Kevin J. Schrage, Richard J. Osendorf, Bradley A. Kuempel, Thomas John Lundgren, Jordan S. Flagstad
  • Patent number: 8496723
    Abstract: An air cleaner arrangement is shown. The air cleaner arrangement includes a serviceable filter cartridge comprising strips of media arranged in a stacked configuration. The strips of media each comprise a corrugated sheet secured to a facing sheet. A preferred filter cartridge positioned within the air cleaner arrangement, is depicted.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: July 30, 2013
    Assignee: Donaldson Company, Inc.
    Inventors: Gregory L. Reichter, Wayne R. W. Bishop, Benny Kevin Nelson, Darrel Wegner, Bruce R. Crenshaw, Vladimir Kladnitsky, Donald Raymond Mork, Kevin J. Schrage, Richard J. Osendorf, Bradley A. Kuempel, Thomas John Lundgren, Jordan S. Flagstad
  • Publication number: 20120272627
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Application
    Filed: June 25, 2012
    Publication date: November 1, 2012
    Applicant: Donaldson Company, Inc.
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Patent number: 8292983
    Abstract: An air filter arrangement is disclosed. The air filter arrangement includes strips of media comprising fluted sheets secured to facing sheets and forming inlet and outlet flutes secured to one another in a stack. Media pack arrangements including such stacked media with peripheral, perimeter, housing seal arrangements are described. Also described are air cleaners including the filter cartridges. Methods of assembly and use are also provided. Also, systems of use are described.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: October 23, 2012
    Assignee: Donaldson Company, Inc.
    Inventors: Gregory L. Reichter, Wayne R. W. Bishop, Benny Kevin Nelson, Darrel Wegner, Bruce R. Crenshaw, Vladimir Kladnitsky, Thomas G. Miller, Donald Raymond Mork, Kevin J. Schrage, Richard J. Osendorf, Bradley A. Kuempel, Thomas John Lundgren, Jordan S. Flagstad
  • Patent number: 8277532
    Abstract: An air filter arrangement is (300) disclosed. The air filter arrangement includes strips of media comprising corrugated sheets secured to facing sheets and forming inlet and outlet flutes secured to one another in a stack. Media pack arrangements including such stacked media with a molding arrangement to secure and seal opposite side edges of the media strips, are described. Also described are filter cartridges including such media pack (301) and air cleaners including the filter cartridges. Methods of assembly and use are also provided. Also, systems of use are described.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: October 2, 2012
    Assignee: Donaldson Company, Inc.
    Inventors: Gregory L. Reichter, Wayne R. W. Bishop, Benny Kevin Nelson, Darrel Wegner, Bruce R. Crenshaw, Vladimir Kladnitsky, Thomas G. Miller, Donald Raymond Mork, Kevin J. Schrage, Richard J. Osendorf, Bradley A. Kuempel, Thomas John Lundgren
  • Patent number: 8206479
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: June 26, 2012
    Assignee: Donaldson Company, Inc.
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren
  • Publication number: 20110296665
    Abstract: An air cleaner includes a housing and an access cover. The internal volume of the housing can be reached through an opening in a side wall of the housing. A filter element having fluted filter media is removable and replaceable from the air cleaner. The housing is constructed and arranged to cam the element into sealing engagement with the housing. The access cover includes structure to help support and ensure proper seating of the filter element within the housing. A method of installing the filter element in the air cleaner includes sliding a portion of the filter element against a slide surface in the housing. A method of servicing an air cleaner includes tilting the filter element against a tilt surface in the housing to release a seal between the filter element and the housing. The filter element can have a handle to assist in servicing of the air cleaner.
    Type: Application
    Filed: August 22, 2011
    Publication date: December 8, 2011
    Applicant: Donaldson Company, Inc.
    Inventors: Larry R. Nepsund, Bradley A. Kuempel, Donald F. Engel, Bruce Allen Boehrs, Sheldon Anderson, Richard L. Bucholtz, Thomas John Lundgren