Patents by Inventor Louis P. Oldham

Louis P. Oldham 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).

  • Engine exhaust gas recirculation particle trap
    Patent number: 6598388
    Abstract: An exhaust gas recirculation system for an internal combustion engine includes intake and exhaust manifolds that respectively receive ambient air and expel exhaust gas. A recirculation line fluidly connects the exhaust and intake manifolds. An exhaust gas recirculation valve is included in the recirculation line and is controlled to distribute exhaust gas into the intake manifold. A particle trap is arranged to receive all of the exhaust gases from the exhaust manifold and includes a particle collection chamber therein. A stagnation region is provided within the particle trap such that all the exhaust gas passed through the exhaust gas particle trap is directed toward the stagnation region therein and at least a portion of debris carried with the exhaust gas is retained within the particle collection chamber.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: July 29, 2003
    Assignee: Cummins, Inc.
    Inventors: Michael Lucas, Matthew Schneider, Louis P. Oldham, Dean Dringenburg
  • Engine exhaust gas recirculation particle trap
    Publication number: 20020124553
    Abstract: An exhaust gas recirculation system for an internal combustion engine includes intake and exhaust manifolds that respectively receive ambient air and expel exhaust gas. A recirculation line fluidly connects the exhaust and intake manifolds. An exhaust gas recirculation valve is included in the recirculation line and is controlled to distribute exhaust gas into the intake manifold. A particle trap is arranged to receive all of the exhaust gases from the exhaust manifold and includes a particle collection chamber therein. A stagnation region is provided within the particle trap such that all the exhaust gas passed through the exhaust gas particle trap is directed toward the stagnation region therein and at least a portion of debris carried with the exhaust gas is retained within the particle collection chamber.
    Type: Application
    Filed: February 1, 2001
    Publication date: September 12, 2002
    Inventors: Michael Lucas, Matthew Schneider, Louis P. Oldham, Dean Dringenburg