Patents by Inventor Michael Dew

Michael Dew 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).

  • Evaporative emission system test apparatus and method of testing an evaporative emission system
    Patent number: 7878046
    Abstract: A test apparatus for an evaporative emission system includes a source of pressure (positive or negative), a sensor for sensing the pressure generated in the evaporative emission system, and an ECU which controls the operation of the source of pressure and receives signals from the sensor reporting the pressure in the vehicle evaporative emission system over time. The ECU compares the sensed data with the stored data representing standard baseline sample vehicles without any leaks to determine the presence of a leak in the evaporative emission system.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: February 1, 2011
    Assignee: MAHLE Powertrain, LLC
    Inventors: Louis Scott Bolt, Michael Dew
  • Evaporative emission system test apparatus and method of testing an evaporative emission system
    Publication number: 20080178660
    Abstract: A test apparatus for an evaporative emission system includes a source of pressure (positive or negative), a sensor for sensing the pressure generated in the evaporative emission system, and an ECU which controls the operation of the source of pressure and receives signals from the sensor reporting the pressure in the vehicle evaporative emission system over time. The ECU compares the sensed data with the stored data representing standard baseline sample vehicles without any leaks to determine the presence of a leak in the evaporative emission system.
    Type: Application
    Filed: January 16, 2008
    Publication date: July 31, 2008
    Inventors: Louis Scott Bolt, Michael Dew