Patents by Inventor Jonathan D. Chappell

Jonathan D. Chappell 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).

  • Automatic downhill speed control system
    Patent number: 8401753
    Abstract: A method for automatically controlling the downhill speed of a machine. The method includes establishing a target machine speed based on a current machine speed and determining whether at least one trigger condition including a grade greater than a predetermined threshold has been satisfied. If satisfied, the method activates a control system to control at least one of a powertrain retarder and a change in a transmission gear to prevent exceeding the target machine speed.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: March 19, 2013
    Assignee: Caterpillar Inc.
    Inventors: Jonathan D. Chappell, Jason D. Bell, Paul Graham, Richard Adams, Keith F. Harvey, Stephen Thompson, James V. Dornberger
  • AUTOMATIC DOWNHILL SPEED CONTROL SYSTEM
    Publication number: 20110125376
    Abstract: A method for automatically controlling the downhill speed of a machine. The method includes establishing a target machine speed based on a current machine speed and determining whether at least one trigger condition including a grade greater than a predetermined threshold has been satisfied. If satisfied, the method activates a control system to control at least one of a powertrain retarder and a change in a transmission gear to prevent exceeding the target machine speed.
    Type: Application
    Filed: November 23, 2009
    Publication date: May 26, 2011
    Applicant: Caterpillar Inc.
    Inventors: Jonathan D. Chappell, Jason D. Bell, Paul Graham, Richard Adams, Keith F. Harvey, Stephen Thompson, James V. Dornberger