Patents by Inventor Steven D Lundquist

Steven D Lundquist 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).

  • Control system and method for operating a hydrostatically driven vehicle
    Patent number: 8016069
    Abstract: A hydrostatically powered vehicle includes an engine operatively associated with a pump that supplies fluid to a propel motor. Based on various sensed and engine operating conditions, a controller determines a desired operating condition for the engine while maintaining the travel speed of the vehicle constant.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: September 13, 2011
    Assignee: Caterpillar Inc.
    Inventors: Matthew Chisholm, Stephen Nelson, Steven D. Lundquist
  • Control system and method for operating a hydrostatically driven vehicle
    Patent number: 7849953
    Abstract: A hydrostatically powered vehicle includes an engine operatively associated with a pump that supplies fluid to a propel motor. Based on various sensed and engine operating conditions, a controller determines a desired operating condition for the engine while maintaining the travel speed of the vehicle constant.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: December 14, 2010
    Assignee: Caterpillar Paving Products Inc
    Inventors: Matthew Chisholm, Stephen Nelson, Steven D Lundquist