Patents by Inventor Paul Alan Rousseau
Paul Alan Rousseau 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: 12209598Abstract: A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft. The pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.Type: GrantFiled: February 26, 2024Date of Patent: January 28, 2025Assignee: Caterpillar Inc.Inventors: Justin Douglas Speichinger, Ramalho Stive, Darren Joseph Hopf, Aurelien Herve Bernard, Paul Alan Rousseau
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Publication number: 20240191730Abstract: A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft. The pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.Type: ApplicationFiled: February 26, 2024Publication date: June 13, 2024Applicant: Caterpillar Inc.Inventors: Justin Douglas Speichinger, Ramalho Stive, Darren Joseph Hopf, Aurelien Herve Bernard, Paul Alan Rousseau
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Patent number: 12006924Abstract: A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of fastener receiving apertures that are disposed along the X-axis on either side of the shaft. The pair of fastener receiving apertures each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.07 to 1.11.Type: GrantFiled: August 4, 2021Date of Patent: June 11, 2024Assignee: Caterpillar Inc.Inventors: Matthew G. Mickiewicz, Stive Ramalho, Darren Joseph Hopf, Justin Douglas Speichinger, Paul Alan Rousseau, Brice Mallein
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Patent number: 11953032Abstract: A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft. The pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.Type: GrantFiled: February 9, 2021Date of Patent: April 9, 2024Assignee: Caterpillar Inc.Inventors: Justin Douglas Speichinger, Ramalho Stive, Darren Joseph Hopf, Aurelien Herve Bernard, Paul Alan Rousseau
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Publication number: 20230043842Abstract: A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of fastener receiving apertures that are disposed along the X-axis on either side of the shaft. The pair of fastener receiving apertures each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.07 to 1.11.Type: ApplicationFiled: August 4, 2021Publication date: February 9, 2023Applicant: Caterpillar Inc.Inventors: Matthew G. Mickiewicz, Stive Ramalho, Darren Joseph Hopf, Justin Douglas Speichinger, Paul Alan Rousseau, Brice Mallein
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Publication number: 20220252083Abstract: A female mounting member is configured to mate with a hydraulic pump or fan. The member includes a body that defines a projection receiving cavity defining a cavity diameter, and a first threaded hole defining a first threaded hole diameter. A ratio of the cavity diameter to the first threaded hole diameter ranges from 8.0 to 8.15.Type: ApplicationFiled: February 9, 2021Publication date: August 11, 2022Applicant: Caterpillar Inc.Inventors: Justin Douglas Speichinger, Ramalho Stive, Darren Joseph Hopf, Aurelien Herve Bernard, Paul Alan Rousseau
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Publication number: 20220252087Abstract: A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft. The pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.Type: ApplicationFiled: February 9, 2021Publication date: August 11, 2022Applicant: Caterpillar Inc.Inventors: Justin Douglas Speichinger, Ramalho Stive, Darren Joseph Hopf, Aurelien Herve Bernard, Paul Alan Rousseau
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Publication number: 20140150880Abstract: Flushing circuits for closed loop hydrostatic circuits enable overriding of the normal function of the flushing circuit during certain machine operational events where flushing can cause undesirable performance issues. The disclosed flushing circuits may prevent flow from leaving the flush valve, may prevent flow from leaving the flushing circuit, may prevent flow from entering the flushing circuit, may prevent the flush valve from shifting from a normally closed position to an open position or may replace the hydro-mechanical control of the flush valve with an electronic control. Cancellation of the flushing function may be commanded by a controller based on fluid temperatures, pressures, turning commands, engine speed, etc.Type: ApplicationFiled: December 5, 2012Publication date: June 5, 2014Applicant: CATERPILLAR INC.Inventors: Paul Alan Rousseau, Christopher Mark Elliott, Richard Ryan Evenson, Jason Mark Buckmier
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Patent number: 7707829Abstract: A flushing system for a transmission is disclosed. The system has a first pump and a first actuator connected to the first pump to form a first loop. The system also has a second pump and a second actuator connected to the second pump to form a second loop. The system further has a charge pump configured to replenish the first and second loops. The system also has a single charge relief valve situated to receive fluid from the first pump, the second pump, and the charge pump.Type: GrantFiled: September 7, 2007Date of Patent: May 4, 2010Assignee: Caterpillar S.A.R.L.Inventors: Paul Anthony Dvorak, Matthew Chad Full, Paul Alan Rousseau
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Patent number: 7690198Abstract: A drivetrain for use in a mobile vehicle is disclosed. The drivetrain may have a housing, a first hydraulic pump connected to the housing, and a second hydraulic pump connected to the housing. The second hydraulic pump may be in axial alignment with the first hydraulic pump. The drivetrain may also have a first motor fluidly connected to the first hydraulic pump, and a second motor fluidly connected to the second hydraulic pump. The first and second motors may have an axial direction substantially perpendicular to the axial alignment of the first and second hydraulic pumps.Type: GrantFiled: April 25, 2007Date of Patent: April 6, 2010Assignee: Caterpillar S.A.R.L.Inventors: Paul Alan Rousseau, Justin Douglas Speichinger
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Publication number: 20090064675Abstract: A flushing system for a transmission is disclosed. The system has a first pump and a first actuator connected to the first pump to form a first loop. The system also has a second pump and a second actuator connected to the second pump to form a second loop. The system further has a charge pump configured to replenish the first and second loops. The system also has a single charge relief valve situated to receive fluid from the first pump, the second pump, and the charge pump.Type: ApplicationFiled: September 7, 2007Publication date: March 12, 2009Inventors: Paul Anthony Dvorak, Matthew Chad Full, Paul Alan Rousseau
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Publication number: 20080264054Abstract: A drivetrain for use in a mobile vehicle is disclosed. The drivetrain may have a housing, a first hydraulic pump connected to the housing, and a second hydraulic pump connected to the housing. The second hydraulic pump may be in axial alignment with the first hydraulic pump. The drivetrain may also have a first motor fluidly connected to the first hydraulic pump, and a second motor fluidly connected to the second hydraulic pump. The first and second motors may have an axial direction substantially perpendicular to the axial alignment of the first and second hydraulic pumps.Type: ApplicationFiled: April 25, 2007Publication date: October 30, 2008Inventors: Paul Alan Rousseau, Justin Douglas Speichinger