Patents by Inventor Darrell J Rowan

Darrell J Rowan 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).

  • LOAD SENSE BOOST DEVICE
    Publication number: 20080202111
    Abstract: A vehicle is disclosed having a hydraulic system. The hydraulic system includes a pressure regulator that maintains the output pressure from a hydraulic pump above a predetermined minimum pressure.
    Type: Application
    Filed: July 21, 2005
    Publication date: August 28, 2008
    Inventors: Neil V. Harber, Darrell J. Rowan, Ryan M. Lutze
  • Load sense boost device
    Patent number: 7415822
    Abstract: A vehicle is disclosed having a hydraulic system. The hydraulic system includes a pressure regulator that maintains the output pressure from a hydraulic pump above a predetermined minimum pressure.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: August 26, 2008
    Assignee: Deere & Company
    Inventors: Neil V Harber, Darrell J Rowan, Ryan M Lutze