Patents by Inventor Cynthia A. Nastav

Cynthia A. Nastav 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).

  • Machine powertrain control system and method
    Patent number: 9079575
    Abstract: A machine having a powertrain including an engine operably connected to a torque converter and a transmission. The machine includes a control system receive an activation signal indicative of an automatic mode operation of the machine and command the torque converter to remain in a direct-drive mode while the transmission shifts from a first gear ratio to a second gear ratio. The control system also limits engine speed below a first engine speed limit when a gear ratio setting of the transmission is indicative of the second gear ratio.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: July 14, 2015
    Assignee: Caterpillar Inc.
    Inventors: Aaron Y. Ho, Mark D. Anderson, Michael D. Mitchell, Cynthia A. Nastav, Ming Zhang, Derek J. Light
  • MACHINE POWERTRAIN CONTROL SYSTEM AND METHOD
    Publication number: 20140135172
    Abstract: A machine having a powertrain including an engine operably connected to a torque converter and a transmission. The machine includes a control system receive an activation signal indicative of an automatic mode operation of the machine and command the torque converter to remain in a direct-drive mode while the transmission shifts from a first gear ratio to a second gear ratio. The control system also limits engine speed below a first engine speed limit when a gear ratio setting of the transmission is indicative of the second gear ratio.
    Type: Application
    Filed: November 14, 2012
    Publication date: May 15, 2014
    Applicant: Caterpillar Inc.
    Inventors: Aaron Y. Ho, Mark D. Anderson, Michael D. Mitchell, Cynthia A. Nastav, Ming Zhang, Derek J. Light