Patents by Inventor Jim McEwan

Jim McEwan 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).

  • Turbocharger with dual wastegate
    Patent number: 8336309
    Abstract: A turbocharger wastegate valve assembly comprises a first bypass port communicating with a first portion of an exhaust inlet and a first valve member adapted for engaging and sealing a first valve seat surrounding the first bypass port. The valve assembly further comprises a second bypass port communicating with a second portion of an exhaust inlet and a second valve member adapted for engaging and sealing a second valve seat surrounding the second port. A shaft supports each valve member for rotation about a shaft axis to lift both the first and second valve members from sealing engagement with the first and second valve seats respectively. The first valve seat is inclined relative to the second valve seat and the shaft has freedom of movement in the axial direction.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: December 25, 2012
    Assignee: Cummins Turbo Technologies Limited
    Inventors: Jim McEwan, Lee Robinson
  • Turbocharger with dual wastegate
    Publication number: 20090151352
    Abstract: A turbocharger wastegate valve assembly comprises a first bypass port communicating with a first portion of an exhaust inlet and a first valve member adapted for engaging and sealing a first valve seat surrounding the first bypass port. The valve assembly further comprises a second bypass port communicating with a second portion of an exhaust inlet and a second valve member adapted for engaging and sealing a second valve seat surrounding the second port. A shaft supports each valve member for rotation about a shaft axis to lift both the first and second valve members from sealing engagement with the first and second valve seats respectively. The first valve seat is inclined relative to the second valve seat and the shaft has freedom of movement in the axial direction.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 18, 2009
    Inventors: Jim McEwan, Lee Robinson