Patents by Inventor Thomas Lee DeMurry

Thomas Lee DeMurry 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: 6600980
    Abstract: This invention provides a strategy and system for an hybrid electric vehicle (HEV) that is not equipped with a hydraulic torque converter wherein a generator motor is utilized to maintain engine rotational velocity during up-shifting of the vehicle transmission in situations where the throttle of the engine is released. This invention can reduce undesirable torque reversals during up-shifting of the vehicle transmission in such situations where the throttle of the engine is released. A controller is adapted to control the generator is supplied with data output by detectors that monitor the rotational velocity of said engine and the gear ratio of the transmission. The controller is programmed to command the generator to maintain the rotational velocity of said engine above a preselected threshold during up-shifting of the transmission.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: July 29, 2003
    Assignee: Ford Global Technologies, LLC
    Inventors: Marvin Paul Kraska, Thomas Lee DeMurry