Patents by Inventor Denis Long

Denis Long 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).

  • Regenerative system for testing torque converters and other transmission coupling devices
    Patent number: 7421888
    Abstract: A test system for testing torque converters, other fluid coupling devices, and the like, e.g., devices that couple engine power to driveline power. The test system drives the test device with a first hydraulic motor, which is itself driven by a first hydraulic pump. At the output of the test device, a second hydraulic pump absorbs the power from the test device, and drives a second hydraulic motor, which in turn drives the first hydraulic pump. A make-up motor is used to also drive the first hydraulic pump, to make up for any additional power desired for testing.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: September 9, 2008
    Assignee: Southwest Research Institute
    Inventors: Denis Long, Glenn Wendel
  • Regenerative System For Testing Torque Converters And Other Transmission Coupling Devices
    Publication number: 20070266796
    Abstract: A test system for testing torque converters, other fluid coupling devices, and the like, e.g., devices that couple engine power to driveline power. The test system drives the test device with a first hydraulic motor, which is itself driven by a first hydraulic pump. At the output of the test device, a second hydraulic pump absorbs the power from the test device, and drives a second hydraulic motor, which in turn drives the first hydraulic pump. A make-up motor is used to also drive the first hydraulic pump, to make up for any additional power desired for testing.
    Type: Application
    Filed: December 7, 2006
    Publication date: November 22, 2007
    Inventors: Denis Long, Glenn Wendel