Patents by Inventor Ronald L. Dupree

Ronald L. Dupree 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).

  • Patent number: 7287522
    Abstract: An engine system includes an engine such as a compression ignition internal combustion engine, including a heat exchanger in an exhaust system thereof. The heat exchanger including at least one carbon foam block for cooling exhaust gas with cooling air. An exhaust system segment includes a carbon foam based heat exchanger configured to exchange heat between exhaust gas and cooling air at least in part via the carbon foam.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: October 30, 2007
    Assignee: Caterpillar Inc.
    Inventors: Ronald L. Dupree, Brandon Dykstra, James J. Callas, Kevin L. Martin
  • Publication number: 20040099403
    Abstract: A heat exchanger system includes one or more nonmetallic finless heat exchanging tubes. The heat exchanging tubes are coiled around a central axis, and vehicle fluid flowing through the tubes is cooled or heated by airflow perpendicular to the central axis.
    Type: Application
    Filed: November 26, 2002
    Publication date: May 27, 2004
    Inventor: Ronald L. Dupree
  • Patent number: 6546919
    Abstract: A cooling system has an air-to-air or first heat exchanger and a fluid or second heat exchanger mounted remotely from a main radiator for cooling an internal combustion engine. A filter filters a recipient fluid, such as an ambient air, before the recipient fluid passes through the first heat exchanger and the second heat exchanger. A cooled fluid is conducted to a flow of intake air for the internal combustion engine. A fan causes the recipient fluid to pass through the filter and the first heat exchanger and the second heat exchanger. The spent recipient fluid is discharged to atmosphere.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: April 15, 2003
    Assignee: Caterpillar Inc
    Inventors: James J. Callas, Ronald L. Dupree, Donald W. Heston
  • Publication number: 20020189255
    Abstract: A cooling system has an air-to-air or first heat exchanger and a fluid or second heat exchanger mounted remotely from a main radiator for cooling an internal combustion engine. A filter filters a recipient fluid, such as an ambient air, before the recipient fluid passes through the first heat exchanger and the second heat exchanger. A cooled fluid is conducted to a flow of intake air for the internal combustion engine. A fan causes the recipient fluid to pass through the filter and the first heat exchanger and the second heat exchanger. The spent recipient fluid is discharged to atmosphere.
    Type: Application
    Filed: April 16, 2002
    Publication date: December 19, 2002
    Inventors: James J. Callas, Ronald L. Dupree, Donald W. Heston
  • Patent number: 6318347
    Abstract: An air-to-air aftercooler or heat exchanger for a vehicular internal combustion engine, which is independent of the main vehicle heat exchanger or radiator, and which is located at a position upon the vehicle which is remote from the main vehicle heat exchanger or radiator, has a filter for filtering ambient air; at least one aftercooler heat exchanger, separate from the main radiator heat exchanger and disposed upon the engine at a location remote from the main radiator heat exchanger, and having a first passageway defined therein which is fluidically connected to the filter for receiving the ambient air which has passed through the filter; a second passageway defined within the at least one aftercooler heat exchanger for receiving turbocharged air from the turbocharger, for conducting the turbocharged air through the at least one aftercooler heat exchanger such that the turbocharged air undergoes a heat exchange process with the ambient air, and for conducting the turbocharged air to the engine intake manif
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: November 20, 2001
    Assignee: Caterpillar Inc.
    Inventors: Paul A. Dicke, Ronald L. Dupree, Donald C. Hodges, Jiubo Ma, Aubery W. Penn
  • Patent number: 6314921
    Abstract: An engine cooling system includes a two-pass radiator, a jacket water pump pumping coolant from the radiator to the engine, and an aftercooler for cooling engine charge air from a turbocharger. An aftercooler pump pumps coolant from the radiator to the aftercooler. An orifice can be disposed in the aftercooler discharge line to limit flow therethrough, and an orifice bypass line with thermostatic control valve can be provided to selectively bypass the orifice. A shunt tank is connected to the suction of the jacket water pump to establish a static pressure head thereon, to ensure that the jacket water pump has sufficient suction pressure despite relatively high coolant head loss through the two-pass radiator.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: November 13, 2001
    Assignee: Caterpillar Inc.
    Inventors: Michael D. Ash, Michael D. Betz, Ronald L. Dupree
  • Patent number: 6158399
    Abstract: An engine cooling system includes a two-pass radiator, a jacket water pump pumping coolant from the radiator to the engine, and an aftercooler for cooling engine charge air from a turbocharger. An aftercooler pump pumps coolant from the radiator to the aftercooler. An orifice can be disposed in the aftercooler discharge line to limit flow therethrough, and an orifice bypass line with thermostatic control valve can be provided to selectively bypass the orifice. A shunt tank is connected to the suction of the jacket water pump to establish a static pressure head thereon, to ensure that the jacket water pump has sufficient suction pressure despite relatively high coolant head loss through the two-pass radiator.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: December 12, 2000
    Assignee: Caterpillar Inc.
    Inventors: Michael D. Ash, Michael D. Betz, Ronald L. Dupree