Patents by Inventor William J. Krisko

William J. Krisko 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: 11014036
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: May 25, 2021
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, Wayne R. W. Bishop, Steven S. Gieseke, Benny K. Nelson
  • Publication number: 20190366258
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Application
    Filed: July 1, 2019
    Publication date: December 5, 2019
    Inventors: William J. Krisko, Wayne R.W. Bishop, Steven S. Gieseke, Benny K. Nelson
  • Patent number: 10335730
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: July 2, 2019
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, Wayne R. W. Bishop, Steven S. Gieseke, Benny K. Nelson
  • Publication number: 20170274314
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Application
    Filed: February 22, 2017
    Publication date: September 28, 2017
    Inventors: William J. Krisko, Wayne R.W. Bishop, Steven S. Gieseke, Benny K. Nelson
  • Patent number: 9610530
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: April 4, 2017
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, Wayne R. W. Bishop, Steven S. Gieseke, Benny K Nelson
  • Patent number: 9295936
    Abstract: A filter element, a safety element and fluid cleaner assembly. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The element generally comprises z-filter media, arranged in a straight through configuration, and an axial seal gasket positioned to extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Methods of assembly and use are provided.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: March 29, 2016
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, Wayne R. W. Bishop, Steven Scott Gieseke, Carolyn J. Finnerty, David W. Nelson
  • Publication number: 20150068174
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Application
    Filed: July 10, 2014
    Publication date: March 12, 2015
    Inventors: William J. Krisko, Wayne R.W. Bishop, Steven S. Gieseke, Benny K Nelson
  • Patent number: 8778043
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: July 15, 2014
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, Wayne R. W. Bishop, Steven S. Gieseke, Benny Nelson
  • Patent number: 8444748
    Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: May 21, 2013
    Assignee: Donaldson Company, Inc.
    Inventors: Gary R. Gillingham, Stan M. Koehler, William J. Krisko, Thomas G. Miller, Winston E. Olson, Fred H. Wahlquist, Ervin P. Fuchs, Eugene D. Wilson
  • Publication number: 20130019576
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Application
    Filed: January 23, 2012
    Publication date: January 24, 2013
    Applicant: Donaldson Company, Inc
    Inventors: William J. Krisko, Wayne R., W. Bishop, Steven S. Gieseke, Benny K. Nelson
  • Patent number: 8101003
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: January 24, 2012
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, Wayne R. W. Bishop, Steven S. Gieseke, Benny Nelson
  • Publication number: 20100115897
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Application
    Filed: January 22, 2010
    Publication date: May 13, 2010
    Applicant: Donaldson Company, Inc.
    Inventors: William J. Krisko, Wayne R. W. Bishop, Steven S. Gieseke, Benny K. Nelson
  • Patent number: 7674308
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: March 9, 2010
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, Wayne R. W. Bishop, Steven S. Gieseke, Benny K. Nelson
  • Publication number: 20080016832
    Abstract: 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 extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.
    Type: Application
    Filed: March 23, 2005
    Publication date: January 24, 2008
    Applicant: DONALDSON COMPANY, INC.
    Inventors: William J. Krisko, Wayne R, W. Bishop, Steven S. Gieseke, Benny K. Nelson
  • Patent number: 7090711
    Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: August 15, 2006
    Assignee: Donaldson Company, Inc.
    Inventors: Gary R. Gillingham, Stan M. Koehler, William J. Krisko, Thomas G. Miller, Winston E. Olson, Fred H. Wahlquist, Ervin P. Fuchs, Eugene D. Wilson
  • Patent number: 6976448
    Abstract: The present disclosure relates to a restriction indicator for an air cleaner system of an internal combustion engine. The restriction indicator includes a housing divided into first and second chambers by a diaphragm. A signal member is connected to the diaphragm. The signal member is moveable along an axis between a reset position and a first indicator position, and defines an axial opening within which a first retaining shoulder is located. A guide member is provided for guiding the signal member as the signal member is moved between the reset position and the first axial position. A retaining member is provided for retaining the signal member in the first indicator position. The retaining member extends within the axial opening of the signal member and includes at least two fingers that project radially outward from the axis. The fingers are configured to engage the first retaining shoulder to retain the signal member in the first indicator position.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: December 20, 2005
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, William E. Couillard, Robert W. Diver, Wayne A. Kaul, Bernard A. Matthys, Larry R. Nepsund
  • Patent number: 6908494
    Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: June 21, 2005
    Assignee: Donaldson Company, Inc.
    Inventors: Gary R. Gillingham, Stan M. Koehler, William J. Krisko, Thomas G. Miller, Winston E. Olson, Fred H. Wahlquist, Ervin P. Fuchs, Eugene D. Wilson
  • Patent number: 6872237
    Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: March 29, 2005
    Assignee: Donaldson Company, Inc.
    Inventors: Gary R. Gillingham, Stan M. Koehler, William J. Krisko, Thomas G. Miller, Winston E. Olson, Fred H. Wahlquist, Ervin P. Fuchs, Eugene D. Wilson
  • Publication number: 20040187765
    Abstract: The present disclosure relates to a restriction indicator for an air cleaner system of an internal combustion engine. The restriction indicator includes a housing divided into first and second chambers by a diaphragm. A signal member is connected to the diaphragm. The signal member is moveable along an axis between a reset position and a first indicator position, and defines an axial opening within which a first retaining shoulder is located. A guide member is provided for guiding the signal member as the signal member is moved between the reset position and the first axial position. A retaining member is provided for retaining the signal member in the first indicator position. The retaining member extends within the axial opening of the signal member and includes at least two fingers that project radially outward from the axis. The fingers are configured to engage the first retaining shoulder to retain the signal member in the first indicator position.
    Type: Application
    Filed: August 12, 2003
    Publication date: September 30, 2004
    Applicant: DONALDSON COMPANY, INC.
    Inventors: William J. Krisko, William E. Couillard, Robert W. Diver, Wayne A. Kaul, Bernard A. Matthys, Larry R. Nepsund
  • Publication number: 20040144253
    Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.
    Type: Application
    Filed: January 12, 2004
    Publication date: July 29, 2004
    Applicant: Donaldson Company, Inc.
    Inventors: Gary R. Gillingham, Stan M. Koehler, William J. Krisko, Thomas G. Miller, Winston E. Olson, Fred H. Wahlquist, Ervin P. Fuchs, Eugene D. Wilson