Patents by Inventor Ryan W. Crabtree

Ryan W. Crabtree 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).

  • Pressure control system and method
    Patent number: 8801393
    Abstract: A vehicle includes an engine and a liquid pump configured to pump liquid from a liquid intake system to an outlet. The vehicle further includes a pressure control system operably coupled to the engine via a communication connection, the pressure control system receiving a first signal from the engine representing engine speed. The pressure control system is configured to cause the liquid pump to change pumping pressure without changing the engine speed, and wherein the pressure control system is configured to cause the liquid pump to change pumping pressure without changing the engine speed when the pressure control system makes a determination relating to the engine speed.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: August 12, 2014
    Assignee: Pierce Manufacturing Inc.
    Inventors: Ryan W. Crabtree, David J Fieber, Brian D Piller, Chad M. Trinkner
  • PRESSURE CONTROL SYSTEM AND METHOD
    Publication number: 20090095545
    Abstract: A vehicle includes an engine and a liquid pump configured to pump liquid from a liquid intake system to an outlet. The vehicle further includes a pressure control system operably coupled to the engine via a communication connection, the pressure control system receiving a first signal from the engine representing engine speed. The pressure control system is configured to cause the liquid pump to change pumping pressure without changing the engine speed, and wherein the pressure control system is configured to cause the liquid pump to change pumping pressure without changing the engine speed when the pressure control system makes a determination relating to the engine speed.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 16, 2009
    Inventors: Ryan W. Crabtree, David J. Fieber, Brian D. Piller, Chad M. Trinkner