Patents by Inventor William J. Matthews

William J. Matthews 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).

  • Patent number: 7578524
    Abstract: A land based recreation and utility vehicle lift and anti-theft device and system. The device includes an elongated support post including a ground-engaging fulcrum connected to, and laterally offset in one direction from, the lower end of the support post. A first pivotal connection of the support post is positioned laterally therefrom in the opposite direction from the fulcrum and adapted for pivotal connection to a drawbar or tubular member of the PRV. A locking bar is also pivotally connected at one end to the support post and preferably connectable at the other end to the drawbar or frame member at a point spaced from the first pivotal connection after the corresponding end of the vehicle is lifted from contact with the support surface by pivotal movement of the support post about the fulcrum whereby the lifted end of the vehicle is maintained in a lifted position for service and as a theft deterrent.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: August 25, 2009
    Inventor: William J Matthews
  • Patent number: 6345515
    Abstract: A conditioning and filling system includes a first processing section for degassing and dehydrating a working fluid, a second processing section for filtering the working fluid, and a monitoring section for sensing a condition of the working fluid, the monitoring section controlling a flow of the working fluid depending on the condition of the working fluid.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: February 12, 2002
    Assignee: Silicon Graphics, Inc.
    Inventors: Gregory W. Pautsch, William J. Matthews, Rich Rineck