Patents by Inventor Shashikanth Rangaraju

Shashikanth Rangaraju 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).

  • Shift control systems and methods for an automatic transmission
    Patent number: 8308611
    Abstract: A transmission shift control system includes a transmission shift control module that executes an upshift or a closed-throttle downshift, a shift stage determination module, and a clutch control module. The stage determination module determines a stage of the upshift or the closed throttle downshift when a downshift is requested. The clutch control module determines a downshift type based on the stage of the upshift or the closed throttle downshift and selectively executes a downshift before the upshift or the closed throttle downshift is completed.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: November 13, 2012
    Inventors: Shashikanth Rangaraju, Robert L. Williams, Matthew D. Whitton
  • SHIFT CONTROL SYSTEMS AND METHODS FOR AN AUTOMATIC TRANSMISSION
    Publication number: 20110183809
    Abstract: A transmission shift control system includes a transmission shift control module that executes an upshift or a closed-throttle downshift, a shift stage determination module, and a clutch control module. The stage determination module determines a stage of the upshift or the closed throttle downshift when a downshift is requested. The clutch control module determines a downshift type based on the stage of the upshift or the closed throttle downshift and selectively executes a downshift before the upshift or the closed throttle downshift is completed.
    Type: Application
    Filed: January 22, 2010
    Publication date: July 28, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Shashikanth Rangaraju, Robert L. Williams, Matthew D. Whitton