Patents by Inventor Stephen R. Tokish

Stephen R. Tokish 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).

  • Method and system for reducing delay in power downshifts for an automatic transmission
    Patent number: 8328685
    Abstract: A method and control module for controlling a transmission of a vehicle includes a clutch torque load predictor module generating a predicted clutch torque load signal for the shift command and a minimum clutch pressure module generating a minimum clutch pressure signal corresponding to a minimum clutch pressure. The control module includes a pressure command module generating a commanded clutch pressure signal for the predicted clutch torque load signal based on the minimum clutch pressure signal and commanding operation of a clutch with a commanded clutch pressure signal. The control module also includes a transmission control module generating the shift command after the clutch torque load predictor module generates the predicted clutch signal, the minimum clutch pressure module generates the minimum clutch pressure signal and the pressure command module generates the commanded clutch pressure signal.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: December 11, 2012
    Inventors: William R. Mayhew, Haytham A. Fayyad, Stephen R. Tokish
  • METHOD AND SYSTEM FOR REDUCING DELAY IN POWER DOWNSHIFTS FOR AN AUTOMATIC TRANSMISSION
    Publication number: 20110077123
    Abstract: A method and control module for controlling a transmission of a vehicle includes a clutch torque load predictor module generating a predicted clutch torque load signal for the shift command and a minimum clutch pressure module generating a minimum clutch pressure signal corresponding to a minimum clutch pressure. The control module includes a pressure command module generating a commanded clutch pressure signal for the predicted clutch torque load signal based on the minimum clutch pressure signal and commanding operation of a clutch with a commanded clutch pressure signal. The control module also includes a transmission control module generating the shift command after the clutch torque load predictor module generates the predicted clutch signal, the minimum clutch pressure module generates the minimum clutch pressure signal and the pressure command module generates the commanded clutch pressure signal.
    Type: Application
    Filed: September 25, 2009
    Publication date: March 31, 2011
    Applicant: GM GLOBAL TECHNOLOGY OEPERATIONS, INC.
    Inventors: William R. Mayhew, Haytham A. Fayyad, Stephen R. Tokish