Patents by Inventor Fred Wahlquist
Fred Wahlquist 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).
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Patent number: 11826691Abstract: 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.Type: GrantFiled: June 5, 2020Date of Patent: November 28, 2023Assignee: Donaldson Company, Inc.Inventors: Fred Wahlquist, Thomas R. Olson, Jason DeGuelle
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Patent number: 10967320Abstract: 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; possible evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.Type: GrantFiled: November 21, 2019Date of Patent: April 6, 2021Assignee: Donaldson Company, Inc.Inventors: Gary Gillingham, Fred Wahlquist, Thomas Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson, Robert Widerski
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Publication number: 20200398206Abstract: 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.Type: ApplicationFiled: June 5, 2020Publication date: December 24, 2020Inventors: Fred Wahlquist, Thomas R. Olson, Jason DeGuelle
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Publication number: 20200230538Abstract: 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; possible evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.Type: ApplicationFiled: November 21, 2019Publication date: July 23, 2020Inventors: Gary Gillingham, Fred Wahlquist, Thomas Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson, Robert Widerski
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Patent number: 10675578Abstract: 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.Type: GrantFiled: August 18, 2017Date of Patent: June 9, 2020Assignee: Donaldson Company, Inc.Inventors: Fred Wahlquist, Thomas R. Olson, Jason R. DeGuelle
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Patent number: 10512870Abstract: 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; possible evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.Type: GrantFiled: September 11, 2017Date of Patent: December 24, 2019Assignee: Donaldson Company, Inc.Inventors: Gary Gillingham, Fred Wahlquist, Thomas Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson, Robert Widerski
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Publication number: 20170368489Abstract: 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; possible evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.Type: ApplicationFiled: September 11, 2017Publication date: December 28, 2017Inventors: Gary Gillingham, Fred Wahlquist, Thomas Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson, Robert Widerski
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Publication number: 20170341000Abstract: 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.Type: ApplicationFiled: August 18, 2017Publication date: November 30, 2017Inventors: Fred Wahlquist, Thomas R. Olson, Jason R. DeGuelle
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Patent number: 9757673Abstract: 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; possible evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.Type: GrantFiled: August 13, 2015Date of Patent: September 12, 2017Assignee: Donaldson Company, Inc.Inventors: Gary Gillingham, Fred Wahlquist, Thomas Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson, Robert Widerski
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Publication number: 20150343362Abstract: 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; possible evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.Type: ApplicationFiled: August 13, 2015Publication date: December 3, 2015Inventors: GARY GILLINGHAM, Fred Wahlquist, Thomas Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson, Robert Widerski
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Patent number: 9186612Abstract: Assemblies, features, and techniques for pulse jet air cleaner assemblies and their operation are described. In general, the techniques relate to: providing for advantageous dust egress arrangement from the housing; and, preferred pulse control logic. This can be advantageous in field operation.Type: GrantFiled: January 20, 2011Date of Patent: November 17, 2015Assignee: Donaldson Company, Inc.Inventors: Fred Wahlquist, Thomas Olson, Jason DeGuelle
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Patent number: 9108135Abstract: 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 pulse jet accumulator section, pulse jet equipment for cleaning a filter cartridge positioned within the air cleaner; evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.Type: GrantFiled: March 25, 2013Date of Patent: August 18, 2015Assignee: Donaldson Company, Inc.Inventors: Gary Gillingham, Fred Wahlquist, Thomas Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson, Robert Widerski
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Patent number: 8262762Abstract: Methods, techniques, and constructions are provided for use to apply an evacuation valve arrangement on an air cleaner assembly that is configured for pulse jet operation. An example evacuation valve arrangement is provided which comprises a valve member in the form of a sleeve that extends completely around a sidewall portion of an air cleaner housing of a pulse jet air cleaner. Examples are depicted in which the sidewall portion can comprise: a portion of a housing sidewall section that surrounds an installed filter cartridge, in use; a portion of an access cover; or, a drop tube secured to a portion of the housing, for example either on an access cover or on another portion of a housing. Specific features and alternatives are described. Also, methods of assembly and operation are described.Type: GrantFiled: April 15, 2011Date of Patent: September 11, 2012Assignee: Donaldson Company, Inc.Inventors: Thomas Olson, Gary Gillingham, Fred Wahlquist
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Publication number: 20110252964Abstract: Assemblies, features, and techniques for pulse jet air cleaner assemblies and their operation are described. In general, the techniques relate to: providing for advantageous dust egress arrangement from the housing; and, preferred pulse control logic. This can be advantageous in field operation.Type: ApplicationFiled: January 20, 2011Publication date: October 20, 2011Applicant: Donaldson Company Inc.Inventors: Fred Wahlquist, Thomas Olson, Jason DeGuelle
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Publication number: 20110185893Abstract: Methods, techniques, and constructions are provided for use to apply an evacuation valve arrangement on an air cleaner assembly that is configured for pulse jet operation. An example evacuation valve arrangement is provided which comprises a valve member in the form of a sleeve that extends completely around a sidewall portion of an air cleaner housing of a pulse jet air cleaner. Examples are depicted in which the sidewall portion can comprise: a portion of a housing sidewall section that surrounds an installed filter cartridge, in use; a portion of an access cover; or, a drop tube secured to a portion of the housing, for example either on an access cover or on another portion of a housing. Specific features and alternatives are described. Also, methods of assembly and operation are described.Type: ApplicationFiled: April 15, 2011Publication date: August 4, 2011Applicant: Donaldson Company, Inc.Inventors: Thomas R. Olson, Gary Gillingham, Fred Wahlquist
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Patent number: 7927396Abstract: Methods, techniques, and constructions are provided for use to apply an evacuation valve arrangement on an air cleaner assembly that is configured for pulse jet operation. An example evacuation valve arrangement is provided which comprises a valve member in the form of a sleeve that extends completely around a sidewall portion of an air cleaner housing of a pulse jet air cleaner. Examples are depicted in which the sidewall portion can comprise: a portion of a housing sidewall section that surrounds an installed filter cartridge, in use; a portion of an access cover; or, a drop tube secured to a portion of the housing, for example either on an access cover or on another portion of a housing. Specific features and alternatives are described. Also, methods of assembly and operation are described.Type: GrantFiled: March 19, 2009Date of Patent: April 19, 2011Assignee: Donaldson Company, Inc.Inventors: Thomas R. Olson, Gary Gillingham, Fred Wahlquist
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Publication number: 20090308034Abstract: Methods, techniques, and constructions are provided for use to apply an evacuation valve arrangement on an air cleaner assembly that is configured for pulse jet operation. An example evacuation valve arrangement is provided which comprises a valve member in the form of a sleeve that extends completely around a sidewall portion of an air cleaner housing of a pulse jet air cleaner. Examples are depicted in which the sidewall portion can comprise: a portion of a housing sidewall section that surrounds an installed filter cartridge, in use; a portion of an access cover; or, a drop tube secured to a portion of the housing, for example either on an access cover or on another portion of a housing. Specific features and alternatives are described. Also, methods of assembly and operation are described.Type: ApplicationFiled: March 19, 2009Publication date: December 17, 2009Inventors: Thomas R. Olson, Gary Gillingham, Fred Wahlquist
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Publication number: 20070186774Abstract: 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: ApplicationFiled: April 26, 2007Publication date: August 16, 2007Applicant: Donaldson Company, Inc.Inventors: Gary Gillingham, Stan Koehler, William Krisko, Thomas Miller, Winston Olson, Fred Wahlquist, Ervin Fuchs, Eugene Wilson
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Publication number: 20060277871Abstract: 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: ApplicationFiled: July 24, 2006Publication date: December 14, 2006Inventors: Gary Gillingham, Stan Koehler, William Krisko, Thomas Miller, Winsten Olson, Fred Wahlquist, Ervin Fuchs, Eugene Wilson
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Publication number: 20050166559Abstract: 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: ApplicationFiled: March 29, 2005Publication date: August 4, 2005Applicant: Donaldson Company, Inc.Inventors: Gary Gillingham, Stan Koehler, William Krisko, Thomas Miller, Winston Olson, Fred Wahlquist, Ervin Fuchs, Eugene Wilson