Patents by Inventor David B. Harder
David B. Harder 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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Publication number: 20230285882Abstract: 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 seal member to form a seal. The force needed to make the seal is a torque of less than 10 N-m.Type: ApplicationFiled: May 18, 2023Publication date: September 14, 2023Inventors: Michael J. Gustafson, Kurt Joscher, David B. Harder, Brian Tucker
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Publication number: 20230173413Abstract: A filter element, for use filtering liquids such as fuel, includes a first section of filter media, an optional layer of coalescer media, and a section of barrier media. The first section and optional coalescer filter media are held between opposite first and second end caps. The second end cap is integrated with the barrier filter media. The barrier media extends at least part way into an interior of the first section and can be conical in shape.Type: ApplicationFiled: February 6, 2023Publication date: June 8, 2023Inventors: Scott A. BETCHER, Kenneth P. SKAJA, Paul R. HENNEN, Gwenolé STOUTHUYSEN, Brian TUCKER, David B. HARDER
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Patent number: 11654384Abstract: 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 seal member to form a seal. The force needed to make the seal is a torque of less than 10 N-m.Type: GrantFiled: June 21, 2022Date of Patent: May 23, 2023Assignee: Donaldson Company, Inc.Inventors: Michael J. Gustafson, Kurt Joscher, David B. Harder, Brian Tucker
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Patent number: 11571641Abstract: A filter element, for use filtering liquids such as fuel, includes a first section of filter media, an optional layer of coalescer media, and a section of barrier media. The first section and optional coalescer filter media are held between opposite first and second end caps. The second end cap is integrated with the barrier filter media. The barrier media extends at least part way into an interior of the first section and can be conical in shape.Type: GrantFiled: March 8, 2019Date of Patent: February 7, 2023Assignee: Donaldson Company, Inc.Inventors: Scott A. Betcher, Kenneth P. Skaja, Paul R. Hennen, Gwenolé Stouthuysen, Brian Tucker, David B. Harder
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Publication number: 20220323889Abstract: 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 seal member to form a seal. The force needed to make the seal is a torque of less than 10 N-m.Type: ApplicationFiled: June 21, 2022Publication date: October 13, 2022Inventors: Michael J. Gustafson, Kurt Joscher, David B. Harder, Brian Tucker
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Patent number: 11369903Abstract: 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 seal member to form a seal. The force needed to make the seal is a torque of less than 10 N-m.Type: GrantFiled: August 17, 2020Date of Patent: June 28, 2022Assignee: Donaldson Company, Inc.Inventors: Michael J. Gustafson, Kurt Joscher, David B. Harder, Brian Tucker
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Publication number: 20210379515Abstract: An air filter cartridge for filtering liquids, such as fuel or oil, can be used in a filter assembly. The air filter cartridge has first and second opposite end caps and filter media extending between the end caps. The first end cap has an air channel with an inlet and an outlet to allow for the bleeding of air from the unfiltered side to the filtered side, while minimizing the amount of liquid allowed to bypass the media. Due to the viscosity differences of air versus liquid (e.g. a hydrocarbon such as fuel or oil), a long vent with at least one thin axis impedes liquid flow to a greater degree than air flow through the same vent.Type: ApplicationFiled: September 23, 2019Publication date: December 9, 2021Applicant: Donaldson Company, Inc.Inventors: David B. HARDER, Kurt JOSCHER, Jacob L. SANDERS
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Publication number: 20210016212Abstract: 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 seal member to form a seal. The force needed to make the seal is a torque of less than 10 N-m.Type: ApplicationFiled: August 17, 2020Publication date: January 21, 2021Inventors: Michael J. Gustafson, Kurt Joscher, David B. Harder, Brian Tucker
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Publication number: 20200406169Abstract: A filter element, for use filtering liquids such as fuel, includes a first section of filter media, an optional layer of coalescer media, and a section of barrier media. The first section and optional coalescer filter media are held between opposite first and second end caps. The second end cap is integrated with the barrier filter media. The barrier media extends at least part way into an interior of the first section and can be conical in shape.Type: ApplicationFiled: March 8, 2019Publication date: December 31, 2020Applicant: Donaldson Company, Inc.Inventors: Scott A. BETCHER, Kenneth P. SKAJA, Paul R. HENNEN, Gwenolé STOUTHUYSEN, Brian TUCKER, David B. HARDER
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Patent number: 10744431Abstract: 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 seal member to form a seal. The force needed to make the seal is a torque of less than 10 N-m.Type: GrantFiled: February 21, 2017Date of Patent: August 18, 2020Assignee: Donaldson Company, Inc.Inventors: Michael J. Gustafson, Kurt Joscher, David B. Harder, Brian Tucker
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Publication number: 20190060808Abstract: 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 seal member to form a seal. The force needed to make the seal is a torque of less than 10 N-m.Type: ApplicationFiled: February 21, 2017Publication date: February 28, 2019Inventors: Michael J. Gustafson, Kurt Joscher, David B. Harder, Brian Tucker
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Publication number: 20170252682Abstract: 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 seal member to form a seal. The force needed to make the seal is a torque of less than 10 N-m.Type: ApplicationFiled: February 21, 2017Publication date: September 7, 2017Inventors: Michael J. Gustafson, Kurt Joscher, David B. Harder, Brian Tucker
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Publication number: 20170014734Abstract: 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 direction. The endcap also includes a first seal member disposed adjacent the flange. The first seal includes a first portion thereof engaged with an axial facing surface of the first plate member and a second portion thereof engaged with a radially facing surface of the flange. The endcap further includes a second plate member disposed radially outward of the radial outer portion and a second seal member disposed adjacent the second plate member including at least a portion thereof axially spaced from the axially facing surface of the first plate member in a second direction along the longitudinal axis opposite the first direction.Type: ApplicationFiled: July 17, 2015Publication date: January 19, 2017Inventors: CHRISTOPHER J. SALVADOR, RANDALL W. HEIBENTHAL, DENNIS M. DEEDRICH, DAVID B. HARDER, JOHN R. HACKER, RICHARD J. EISENMENGER
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Patent number: 9511314Abstract: A filter element disclosed herein includes a center tube defining a central reservoir and including an interior sidewall. The filter element further includes an end plate and a pocket defining a port extending from the end plate into the central reservoir. The pocket includes an inner wall, an outer wall, and a plurality of projections extending from the outer wall of the pocket toward the interior sidewall of the center tube.Type: GrantFiled: July 29, 2013Date of Patent: December 6, 2016Assignees: Caterpillar Inc., Donaldson Company, Inc., Advanced Filtration Systems, Inc.Inventors: Mark T. Allott, David Ofori-Amoah, Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, David B. Harder, John R. Hacker, Richard J. Eisenmenger
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Patent number: 9089795Abstract: 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 direction. The endcap also includes a first seal member disposed adjacent the flange. The first seal includes a first portion thereof engaged with an axial facing surface of the first plate member and a second portion thereof engaged with a radially facing surface of the flange. The endcap further includes a second plate member disposed radially outward of the radial outer portion and a second seal member disposed adjacent the second plate member including at least a portion thereof axially spaced from the axially facing surface of the first plate member in a second direction along the longitudinal axis opposite the first direction.Type: GrantFiled: August 23, 2013Date of Patent: July 28, 2015Assignees: Caterpillar Inc., Advanced Filtration Systems, Inc., Donaldson Company, Inc.Inventors: Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, David B. Harder, John R. Hacker, Richard J. Eisenmenger
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Publication number: 20130334147Abstract: 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 direction. The endcap also includes a first seal member disposed adjacent the flange. The first seal includes a first portion thereof engaged with an axial facing surface of the first plate member and a second portion thereof engaged with a radially facing surface of the flange. The endcap further includes a second plate member disposed radially outward of the radial outer portion and a second seal member disposed adjacent the second plate member including at least a portion thereof axially spaced from the axially facing surface of the first plate member in a second direction along the longitudinal axis opposite the first direction.Type: ApplicationFiled: August 23, 2013Publication date: December 19, 2013Applicants: CATERPILLAR INC., ADVANCED FILTRATION SYSTEMS, INC., DONALDSON COMPANY, INC.Inventors: Christopher J. SALVADOR, Randall W. HEIBENTHAL, Dennis M. DEEDRICH, David B. HARDER, John R. HACKER, Richard J. EISENMENGER
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Publication number: 20130313183Abstract: A filter element disclosed herein includes a center tube defining a central reservoir and including an interior sidewall. The filter element further includes an end plate and a pocket defining a port extending from the end plate into the central reservoir. The pocket includes an inner wall, an outer wall, and a plurality of projections extending from the outer wall of the pocket toward the interior sidewall of the center tube.Type: ApplicationFiled: July 29, 2013Publication date: November 28, 2013Applicants: CATERPILLAR INC., DONALDSON COMPANY, INC., ADVANCED FILTRATION SYSTEMS, INC.Inventors: Mark T. Allott, David Ofori-Amoah, Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, David B. Harder, John R. Hacker, Richard J. Eisenmenger
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Publication number: 20130248436Abstract: A fluid filter element for use in fuel filtration systems is disclosed. The filter element comprises, in an example embodiment, top and bottom end caps; filter media extending between the end caps and forming a central volume between the end caps; and an inner liner disposed in the central volume of the filter media between the end caps. A fluid passage is positioned in the inner liner extending between the end caps, the fluid passage being separate and independent of the flow through the filter media. A first seal is affixed to the bottom end cap; and a second seal with a central opening is affixed to the lower end of the inner liner. The inner lining may provide partial axial support to the filter media. An outer lining may also be included and provide partial axial support to the filter media.Type: ApplicationFiled: April 11, 2011Publication date: September 26, 2013Applicant: DONALDSON COMPANY, INC.Inventors: John R. Hacker, David B. Harder, Kenneth P. Skaja
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Patent number: 8540080Abstract: An endcap includes a first plate member having 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, and projecting axially along the longitudinal axis in a first direction. The endcap also includes a first seal member disposed adjacent the flange. The first seal member includes a first portion engaged with an axial facing surface of the first plate member and a second portion engaged with a radially facing surface of the flange. The endcap further includes a second plate member disposed radially outward of the radial outer portion and a second seal member disposed adjacent the second plate member including at least a portion axially spaced from the axially facing surface of the first plate member in a second direction along the longitudinal axis opposite the first direction.Type: GrantFiled: August 7, 2012Date of Patent: September 24, 2013Assignees: Caterpillar Inc., Advanced Filtration Systems Inc., Donaldson Company Inc.Inventors: Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, David B. Harder, John R. Hacker, Richard Eisenmenger
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Patent number: 8501003Abstract: A filter element disclosed herein includes a center tube defining a central reservoir and including an interior sidewall. The filter element further includes an end plate and a pocket defining a port extending from the end plate into the central reservoir. The pocket includes an inner wall, an outer wall, and a plurality of projections extending from the outer wall of the pocket toward the interior sidewall of the center tube.Type: GrantFiled: October 1, 2010Date of Patent: August 6, 2013Assignee: Caterpillar Inc.Inventors: Mark T. Allott, David Ofori-Amoah, Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, David B. Harder, John R. Hacker, Richard J. Eisenmenger