Patents by Inventor Howard E. Tews
Howard E. Tews 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: 9885265Abstract: An internal combustion engine crankcase ventilation rotating coalescer includes an annual rotating coalescing filter element, an inlet port supplying blow by gas from the crankcase to the hollow interior of the annular rotating coalescing filter element, and an outlet port delivering clean separated, air from the exterior of the rotating element. The direction of flow by gas inside-out, radially, outwardly from the hollow interior to the exterior.Type: GrantFiled: July 1, 2014Date of Patent: February 6, 2018Assignee: Cummins Filtration IP Inc.Inventors: Brian W. Schwandt, Scott P. Heckel, Saru Dawar, Chirag D. Parikh, Christopher E. Holm, Peter K. Herman, Gregory W. Hoverson, Rohit Sharma, Benoit Le Roux, Jean-Luc Guichaoua, Shiming Feng, Gerard Malgorn, Arun Janakiraman, Jerald J. Moy, Himani Deshpande, Barry M. Verdegan, Howard E. Tews, Roger L. Zoch
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Patent number: 8974567Abstract: A gas-liquid rotating coalescer includes first and second sets of one or more detent surfaces on a rotary drive member and a driven annular rotating coalescing filter element which engagingly interact in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member. Designated operation of the coalescer requires that the coalescing filter element include the second set of detent surfaces. A coalescing filter element missing the second set of detent surfaces will not effect the noted designated operation.Type: GrantFiled: June 24, 2011Date of Patent: March 10, 2015Assignee: Cummins Filtration IP Inc.Inventors: Barry M. Verdegan, Howard E. Tews, Roger L. Zoch, Bradley A. Smith, Kwok-Lam Ng, Benoit Le Roux, Chirag D. Parikh
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Publication number: 20150027422Abstract: An internal combustion engine crankcase ventilation rotating coalescer includes an annual rotating coalescing filter element, an inlet port supplying blow by gas from the crankcase to the hollow interior of the annular rotating coalescing filter element, and an outlet port delivering clean separated, air from the exterior of the rotating element. The direction of flow by gas inside-out, radially, outwardly from the hollow interior to the exterior.Type: ApplicationFiled: July 1, 2014Publication date: January 29, 2015Inventors: Brian W. Schwandt, Scott P. Heckel (Deceased), Saru Dawar, Chirag D. Parikh, Christopher E. Holm, Peter K. Herman, Gregory W. Hoverson, Rohit Sharma, Benoit Le Roux, Jean-Luc Guichaoua, Shiming Feng, Gerard Malgorn, Arun Janakiraman, Jerald J. Moy, Himani Deshpande, Barry M. Verdegan, Howard E. Tews, Roger L. Zoch
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Patent number: 8940068Abstract: A gas-liquid rotating separator has first and second sets of magnetically permeable members magnetically interacting with each other to effect rotation of a separator element. A nonauthorized replacement separator element missing the second set of magnetically permeable members will not effect designated operation, thus ensuring, at maintenance servicing, installation of an authorized replacement separator element.Type: GrantFiled: June 24, 2011Date of Patent: January 27, 2015Assignee: Cummins Filtration IP Inc.Inventors: Bradley A. Smith, Kurt M. A. Badeau, Howard E. Tews, Roger L. Zoch
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Patent number: 8807097Abstract: A closed crankcase ventilation system for an internal combustion engine includes a return duct with a variably controlled air-oil coalescer. In a turbocharger version, cleaned separated air is provided to the turbocharger inlet, and the coalescer is variably controlled according to a given condition of the turbocharger and/or the engine and/or the coalescer.Type: GrantFiled: December 16, 2010Date of Patent: August 19, 2014Assignee: Cummins Filtration IP Inc.Inventors: Brian W. Schwandt, Barry M. Verdegan, Howard E. Tews, Roger L. Zoch, Shiming Feng, Patricia E. Heckel
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Patent number: 8794222Abstract: An internal combustion engine crankcase ventilation rotating coalescer includes an annular rotating coalescing filter element, an inlet port supplying blowby gas from the crankcase to the hollow interior of the annular rotating coalescing filter element, and an outlet port delivering cleaned separated air from the exterior of the rotating element. The direction of blowby gas is inside-out, radially outwardly from the hollow interior to the exterior.Type: GrantFiled: December 16, 2010Date of Patent: August 5, 2014Assignee: Cummins Filtration IP, Inc.Inventors: Brian W. Schwandt, Saru Dawar, Chirag Parikh, Christopher E. Holm, Peter K. Herman, Gregory W. Hoverson, Rohit Sharma, Benoit Le Roux, Jean-Luc Goichaoua, Shiming Feng, Gerard Malgorn, Arun Janakiraman, Jerald J. Moy, Himani Deshpande, Barry M. Verdegan, Howard E. Tews, Roger L. Zoch, Bryan P. Steffen, Patricia E. Heckel
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Publication number: 20110252974Abstract: A gas-liquid rotating coalescer includes first and second sets of one or more detent surfaces on a rotary drive member and a driven annular rotating coalescing filter element which engagingly interact in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member. Designated operation of the coalescer requires that the coalescing filter element include the second set of detent surfaces. A coalescing filter element missing the second set of detent surfaces will not effect the noted designated operation.Type: ApplicationFiled: June 24, 2011Publication date: October 20, 2011Applicant: CUMMINS FILTRATION IP INC.Inventors: Barry M. Verdegan, Howard E. Tews, Roger L. Zoch, Bradley A. Smith, Kwok-Lam Ng, Benoit Le Roux, Chirag D. Parikh
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Publication number: 20110247309Abstract: A gas-liquid rotating separator has first and second sets of magnetically permeable members magnetically interacting with each other to effect rotation of a separator element. A nonauthorized replacement separator element missing the second set of magnetically permeable members will not effect designated operation, thus ensuring, at maintenance servicing, installation of an authorized replacement separator element.Type: ApplicationFiled: June 24, 2011Publication date: October 13, 2011Applicant: CUMMINS FILTRATION IP INC.Inventors: Bradley A. Smith, Kurt M.A. Badeau, Howard E. Tews, Roger L. Zoch
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Publication number: 20110180051Abstract: An internal combustion engine crankcase ventilation rotating coalescer includes an annular rotating coalescing filter element, an inlet port supplying blowby gas from the crankcase to the hollow interior of the annular rotating coalescing filter element, and an outlet port delivering cleaned separated air from the exterior of the rotating element. The direction of blowby gas is inside-out, radially outwardly from the hollow interior to the exterior.Type: ApplicationFiled: December 16, 2010Publication date: July 28, 2011Applicant: CUMMINS FILTRATION IP INC.Inventors: Brian W. Schwandt, Scott P. Heckel, Saru Dawar, Chirag Parikh, Christopher E. Holm, Peter K. Herman, Gregory W. Hoverson, Rohit Sharma, Benoit Le Roux, Jean-Luc Goichaoua, Shiming Feng, Gerard Malgorn, Arun Janakiraman, Jerald J. Moy, Himani Deshpande, Barry M. Verdegan, Howard E. Tews, Roger L. Zoch, Patricia E. Heckel
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Publication number: 20110180052Abstract: A closed crankcase ventilation system for an internal combustion engine includes a return duct with a variably controlled air-oil coalescer. In a turbocharger version, cleaned separated air is provided to the turbocharger inlet, and the coalescer is variably controlled according to a given condition of the turbocharger and/or the engine and/or the coalescer.Type: ApplicationFiled: December 16, 2010Publication date: July 28, 2011Applicant: CUMMINS FILTRATION IP INC.Inventors: Brian W. Schwandt, Scott P. Heckel, Patricia E. Heckel, Barry M. Verdegan, Howard E. Tews, Roger L. Zoch, Shiming Feng
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Patent number: 6802387Abstract: A vertical mount muffler (40) has an external water trap (52) in an exhaust pipe (48) and drains water from a point between the muffler housing upper outlet (46) and the terminal end (50) of the exhaust pipe. The water trap (52) is laterally adjacent to the muffler housing (42) and below the housing upper outlet (46) and traps and drains water entering the exhaust pipe (48) from the terminal end (50).Type: GrantFiled: September 27, 2002Date of Patent: October 12, 2004Assignee: Fleet Guard, Inc.Inventors: Ami E. Kreger, Jay V. Warner, Howard E. Tews, Timothy J. Palzkill