Patents by Inventor Christopher E. Holm
Christopher E. Holm 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: 20200318585Abstract: An air intake system having an air filter and a cyclonic pre-cleaner is described. The cyclonic pre-cleaner includes a plurality of fins that cause the air flowing through the pre-cleaner to go from a substantially axial flow to a substantially swirling flow. As the air flow through the pre-cleaner increases, the air is swirled at a faster rate, and some contaminant particles in the air will be forced out of the flow of air before reaching the air filter. The air intake system includes a blower unit having a motor, an impeller, and a controller. The blower unit structured to selectively draw more air through the air intake system to increase the flow of air through the pre-cleaner thereby increasing the efficiency of the pre-cleaner.Type: ApplicationFiled: May 13, 2016Publication date: October 8, 2020Applicant: CUMMINS FILTRATION IP, INC.Inventors: Peter K. Herman, Christopher E. Holm
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Publication number: 20200309000Abstract: Various example embodiments relate to rotating coalescers. One embodiment includes a housing comprising a first housing section having a blowby gas inlet structured to receive crankcase blowby gases from a crankcase. The housing further comprises an oil outlet. The rotating coalescer includes an endcap and filter media. The filter media is arranged in a cylindrical shape and is coupled to and positioned between the crankcase blowby gases passing through the filter media by coalescing and separating oils and aerosols contained in the crankcase blowby gases. The rotating coalescer includes a hollow shaft extending through the housing and positioned radially inside of the filter media. The hollow shaft forms a blowby gas outlet structured to route filtered crankcase blowby gases out of the housing. The rotating coalescer further includes a drive mechanism operatively coupled to the hollow shaft.Type: ApplicationFiled: June 16, 2020Publication date: October 1, 2020Applicant: Cummins Filtration IP, Inc.Inventors: Anthony Barreteau, Christopher E. Holm, Benjamin L. Scheckel, Alain Olier
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Publication number: 20200276532Abstract: A rotating coalescer having an ejected coalesced liquid separating device is described. The separating device prevents re-entrainment of liquid into a stream of filtered gas. The rotating coalescer includes a rotating filter element or coalescing cone stack positioned within a rotating coalescer housing. The outer surface of the rotating filter element or the outlet of the coalescing cone stack is displaced from the inner surface of the rotating coalescer housing. The gap between the rotating filter element or the coalescing cone stack and the rotating coalescer housing allows for ejected coalesced liquid, such as oil, to accumulate on the inner surface of the rotating coalescer housing for drainage and allows for filtered gas, such as air, to exit through a clean gas outlet of the rotating coalescer housing.Type: ApplicationFiled: May 18, 2020Publication date: September 3, 2020Applicant: Cummins Filtration IP, Inc.Inventors: Brian W. Schwandt, Christopher E. Holm, Chirag D. Parikh, Suryanarayanan Paneerselvam, Peter K. Herman
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Patent number: 10760208Abstract: Described herein is a continuous process for modifying the properties of polyester and polyester based fibers, such as a poly(butylene terephthalate) (PBT) fiber, comprising subjecting the PBT fiber to alkaline hydrolysis, and optionally further comprising functionalizing the PBT fiber by solution grafting such as fluorination. The alkaline hydrolysis and optionally subsequent functionalization such as fluorination process can be continuous, following the melt blowing/spinning or spun-bonding process. Also described is a nonwoven PBT fiber mat obtained by the surface modification process. Further described is a filtration device comprising the nonwoven PBT fiber mat.Type: GrantFiled: November 30, 2018Date of Patent: September 1, 2020Assignees: CUMMINS FILTRATION IP, INC, REGENTS OF THE UNIVERISTY OF MINNESOTAInventors: Zaifei Wang, Frank S. Bates, Christopher W. Macosko, Kan Wang, William C. Haberkamp, Christopher E. Holm
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Patent number: 10744438Abstract: An attachment and retaining mechanism is described for removably attaching a rotating filter element to a rotating shaft. The rotating filter element includes a filter media that is driven by a drive mechanism that rotates the rotating shaft. The filter element is removably attached to the rotating shaft such that the filter element and filtration system can be periodically replaced and/or serviced. In some arrangements, the drive shaft includes a D-shaped section that interacts with a mating section of the filter element sleeve of the rotating filter element. In other arrangements, the drive shaft includes at least one flat drive surface.Type: GrantFiled: August 26, 2016Date of Patent: August 18, 2020Assignee: CUMMINS FILTRATION IP, INC.Inventors: Chirag D. Parikh, Christopher E. Holm, Bradley A. Smith
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Patent number: 10718242Abstract: The combination of a gas-pressure-driven pump jet nozzle or alternatively Coanda effect nozzle with an impactor nozzle(s) in an air-oil separator for separating oil from blow-by gasses from a crankcase of an internal combustion engine, or for separating liquid aerosol from gas, in general. Such combination enhances impaction efficiency and enables operation at higher pressure differentials (or pressure drop) (âdPâ) without causing excessive backpressure in the air-oil separator.Type: GrantFiled: January 25, 2018Date of Patent: July 21, 2020Assignee: CUMMINS FILTRATION IP, INC.Inventors: Peter K. Herman, Christopher E. Holm, Arun Janakiraman
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Patent number: 10711669Abstract: Various example embodiments relate to rotating coalescers. One embodiment includes a housing comprising a first housing section having a blowby gas inlet structured to receive crankcase blowby gases from a crankcase. The housing further comprises an oil outlet. The rotating coalescer includes an endcap and filter media. The filter media is arranged in a cylindrical shape and is coupled to and positioned between the first housing section and endcap. The filter media is structured to filter the crankcase blowby gases passing through the filter media by coalescing and separating oils and aerosols contained in the crankcase blowby gases. The rotating coalescer includes a hollow shaft extending through the housing and positioned radially inside of the filter media. The hollow shaft forms a blowby gas outlet structured to route filtered crankcase blowby gases out of the housing. The rotating coalescer further includes a drive mechanism operatively coupled to the hollow shaft.Type: GrantFiled: April 25, 2017Date of Patent: July 14, 2020Assignee: CUMMINS FILTRATION IP, INC.Inventors: Anthony Barreteau, Christopher E. Holm, Benjamin L. Scheckel, Alain Olier
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Patent number: 10688430Abstract: Cleanable filters and methods of cleaning filters are described in the present application. The cleanable air filter includes a housing and a filter element installed in the housing. The filter element is configured to filter an operating fluid in a given application. The filter element is cleanable in-situ in the installed condition in the housing. The cleanable air filter further includes a cleaning fluid applicator configured to apply a cleaning fluid to the filter element while the filter element is in the installed condition in the housing such that the filter element is cleanable without being removed from the filter housing.Type: GrantFiled: June 11, 2019Date of Patent: June 23, 2020Assignee: CUMMINS FILTRATION IP, INC.Inventors: Mark V. Holzmann, Robert A. Bannister, Budi Antony, Scott W. Schwartz, Brian W. Schwandt, Steven R. Sankbeil, Christopher E. Holm, Eric A. Janikowski, Scott G. Manke
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Patent number: 10682601Abstract: A rotating coalescer having an ejected coalesced liquid separating device is described. The separating device prevents re-entrainment of liquid into a stream of filtered gas. The rotating coalescer includes a rotating filter element or coalescing cone stack positioned within a rotating coalescer housing. The outer surface of the rotating filter element or the outlet of the coalescing cone stack is displaced from the inner surface of the rotating coalescer housing. The gap between the rotating filter element or the coalescing cone stack and the rotating coalescer housing allows for ejected coalesced liquid, such as oil, to accumulate on the inner surface of the rotating coalescer housing for drainage and allows for filtered gas, such as air, to exit through a clean gas outlet of the rotating coalescer housing.Type: GrantFiled: August 26, 2016Date of Patent: June 16, 2020Assignee: CUMMINS FILTRATION IP, INC.Inventors: Brian W. Schwandt, Christopher E. Holm, Chirag D. Parikh, Suryanarayanan Paneerselvam, Peter K. Herman
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Publication number: 20200171420Abstract: Rotating coalescer elements that maximize the radial-projected separation surface area in a given (rotating) cylindrical volume, where flow to be cleaned is passing axially upward or downward through a separating media of the rotating coalescer element. Various example package assemblies are provided with various types of rotating configurations including cylindrical coiled media packs, frustum coiled media packs, concentric cylinders, coiled metal or polymer films with and without perforations, and/or alternating layers of different materials. The described rotating coalescers may be driven by hydraulic turbine, electric motor, belt, gear or by mounting on rotating machine components, such as rotating engine shafts or connected components.Type: ApplicationFiled: June 19, 2018Publication date: June 4, 2020Applicant: CUMMINS FILTRATION IP. INC.Inventors: Christopher E. Holm, Peter K. Herman, Arun P. Janakiraman, Gerard Malgorn, Chirag D. Parikh, Anthony Barreteau, Ronan Corvec, Ken Tofsland
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Publication number: 20200114291Abstract: Disclosed is a composite filler media. The composite filter media is formed from multiple layers of media material including a nanofiber media layer, where the layers are laminated, bound, or otherwise composited to each other. The composite filter media can comprise at least one nanofiber layer comprising polymeric media material having a geometric mean fiber diameter of about 100 nm to 1 ?m, and fibers configured in a gradient such that ratio of the geometric mean diameter of fibers at the upstream face of the nano fiber layer to the geometric mean diameter of fibers at the downstream face of the nano fiber layer is about 1.1 to 2.8, preferably about 1.2 to 2.4.Type: ApplicationFiled: December 16, 2019Publication date: April 16, 2020Applicant: CUMMINS FILTRATION IP, INC.Inventors: William C. Haberkamp, Eric A. Janikowski, Barry Mark Verdegan, Christopher E. Holm, Huanling Liu, Kyle Ellison, Mark T. Wieczorek
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Publication number: 20200108342Abstract: Various example embodiments relate to filter elements. One such filter element includes filter media having a plurality of flow channels. Each of the plurality of flow channels comprises an inlet having an inlet height and an outlet having an outlet height. The inlet height is larger than the outlet height. The filter media defines an inlet face having an inlet face area and an outlet face having an outlet face area. The inlet face is structured to receive air to be filtered. The outlet face is structured to output filtered air. The inlet face area is larger than the outlet face area.Type: ApplicationFiled: July 11, 2017Publication date: April 9, 2020Applicant: Cummins Filtration IP, Inc.Inventors: Christopher E. Holm, Scott W. Schwartz
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Patent number: 10537837Abstract: Disclosed is a composite filter media. The composite filter media is formed from multiple layers of media material including a nanofiber media layer, where the layers are laminated, bound, or otherwise composited to each other. The composite filter media can comprise at least one nanofiber layer comprising polymeric media material having a geometric mean fiber diameter of about 100 nm to 1 ?m, and fibers configured in a gradient such that ratio of the geometric mean diameter of fibers at the upstream face of the nanofiber layer to the geometric mean diameter of fibers at the downstream face of the nanofiber layer is about 1.1 to 2.8, preferably about 1.2 to 2.4.Type: GrantFiled: April 27, 2018Date of Patent: January 21, 2020Assignee: Cummins Filtration IP, Inc.Inventors: William C. Haberkamp, Eric A. Janikowski, Barry Mark Verdegan, Christopher E. Holm, Huanling Liu, Kyle Ellison, Mark T. Wieczorek
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Patent number: 10537842Abstract: Rotating coalescer crankcase ventilation (CV) systems are described. The described CV systems utilize a contact seal to seal a gap between a static side of a housing and a rotating coalescer inlet. The rotating coalescer may be driven mechanically, electrically, hydraulically, or the like. The contact seal can be formed via a soft solid or a liquid film created by oil. Accordingly, the contact seal is a hydrodynamic soft seal. The contact seal prevents the blowby gases from bypassing the filter element of the rotating coalescer. At the same time, the contact seal may be broken during positive blowby gas recirculation circumstances because the contact seal is a hydrodynamic soft seal.Type: GrantFiled: June 8, 2016Date of Patent: January 21, 2020Assignee: Cummins Filtration IP, Inc.Inventors: Chirag D. Parikh, Christopher E. Holm, Peter K. Herman, Brian W. Schwandt, Lee A. Peck
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Publication number: 20200009486Abstract: Disclosed is composite media that may be utilized in coalescing elements, coalescing cartridges, coalescing systems, and coalescing methods. The disclosed media typically is a composite or laminate material formed by bonding adjacent layers of media material comprising bicomponent fibers.Type: ApplicationFiled: July 17, 2019Publication date: January 9, 2020Applicant: CUMMINS FILTRATION IP, INC.Inventors: William C. Haberkamp, Eric A. Janikowski, Kyle Ellison, Barry Mark Verdegan, Christopher E. Holm
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Patent number: 10507419Abstract: Cleanable filters and methods of cleaning filters are described in the present application. The cleanable air filter includes a housing and a filter element installed in the housing. The filter element is configured to filter an operating fluid in a given application. The filter element is cleanable in-situ in the installed condition in the housing. The cleanable air filter further includes a cleaning fluid applicator configured to apply a cleaning fluid to the filter element while the filter element is in the installed condition in the housing such that the filter element is cleanable without being removed from the filter housing.Type: GrantFiled: January 10, 2014Date of Patent: December 17, 2019Assignee: Cummins Filtration IP, Inc.Inventors: Mark V. Holzmann, Robert A. Bannister, Budi Antony, Scott W. Schwartz, Brian W. Schwandt, Steven R. Sankbeil, Christopher E. Holm, Eric A. Janikowski, Scott G. Manke
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Publication number: 20190329170Abstract: Filter media having a design embossed into the media are described. In some arrangements, the filter media is pleated filter media. In other arrangements, the filter media includes a plurality of channels, such as tetrahedron channels. The filter media includes a pattern of interrupted straight or angled embossments that help maintain separation between adjacent layers of the filter media. The embossments allow for two adjacent media layers (e.g., mating surfaces of the filter media) to remain separated, thereby increasing dust holding capacity and lowering pressure drop over similarly configured filter media not having the embossments.Type: ApplicationFiled: October 16, 2017Publication date: October 31, 2019Applicant: Cummins Filtration IP, Inc.Inventors: Emmanuel Page, Anthony Barreteau, Kurt M.A. Badeau, Christopher E. Holm
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Publication number: 20190299134Abstract: Various rotating coalescer elements are described. The rotating coalescer elements include various arrangements of stacked separator discs or cones. In some arrangements, the described rotating coalescer elements include a combination of stacked separator discs or cones and filter media. In some arrangements, the stacked separator discs are designed to provide the largest possible amount of radial-projected separation surface area in a given rotating cylindrical volume, where flow to be cleaned is passing radially (outwardly or inwardly) through the rotating coalescer element. In some arrangements, this is achieved by stacking non-conical separating plates containing various area-maximizing features (e.g., spiral ribs, axial cylinders, spiral grooves, or spiral âVâ shapes).Type: ApplicationFiled: December 8, 2017Publication date: October 3, 2019Applicant: Cummins Filtration IP, Inc.Inventors: Peter K. Herman, Christopher E. Holm, Mark V. Holzmann, Arun P. Janakiraman, Chirag D. Parikh, Miao Li
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Publication number: 20190291035Abstract: Cleanable filters and methods of cleaning filters are described in the present application. The cleanable air filter includes a housing and a filter element installed in the housing. The filter element is configured to filter an operating fluid in a given application. The filter element is cleanable in-situ in the installed condition in the housing. The cleanable air filter further includes a cleaning fluid applicator configured to apply a cleaning fluid to the filter element while the filter element is in the installed condition in the housing such that the filter element is cleanable without being removed from the filter housing.Type: ApplicationFiled: June 11, 2019Publication date: September 26, 2019Applicant: Cummins Filtration IP, Inc.Inventors: Mark V. Holzmann, Robert A. Bannister, Budi Antony, Scott W. Schwartz, Brian W. Schwandt, Steven R. Sankbeil, Christopher E. Holm, Eric A. Janikowski, Scott G. Manke
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Patent number: 10391434Abstract: Disclosed is composite media that may be utilized in coalescing elements, coalescing cartridges, coalescing systems, and coalescing methods. The disclosed media typically is a composite or laminate material formed by bonding adjacent layer of media material comprising bicomponent fibers.Type: GrantFiled: July 3, 2018Date of Patent: August 27, 2019Assignee: Cummins Filtration IP, Inc.Inventors: William C. Haberkamp, Eric A. Janikowski, Kyle Ellison, Barry Mark Verdegan, Christopher E. Holm