Patents by Inventor Nathan J. James

Nathan J. James 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).

  • Multi-stage check valve
    Patent number: 8291707
    Abstract: A multi-stage check valve includes a valve housing defining an internal valve chamber. A main valve member within the valve chamber of the valve housing has an internal valve chamber. In the first position thereof the main valve member blocks fuel below a predetermined main pressure from flowing through a main fuel path. In the second position thereof the main valve member is displaced to allow fuel above the predetermined main pressure to flow through the main fuel path. The multi-stage check valve also includes a pilot valve member within the valve chamber of the main valve member. In the first position thereof, the pilot valve member blocks fuel below a predetermined pilot pressure from flowing through a pilot fuel path. In the second position thereof, the pilot valve member is displaced to allow fuel above the predetermined pilot pressure to flow through the pilot fuel path.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: October 23, 2012
    Assignee: Delavan Inc
    Inventors: Brandon P. Williams, Nathan J. James
  • MULTI-STAGE CHECK VALVE
    Publication number: 20100037615
    Abstract: A multi-stage check valve includes a valve housing defining an internal valve chamber. A main valve member within the valve chamber of the valve housing has an internal valve chamber. In the first position thereof the main valve member blocks fuel below a predetermined main pressure from flowing through a main fuel path. In the second position thereof the main valve member is displaced to allow fuel above the predetermined main pressure to flow through the main fuel path. The multi-stage check valve also includes a pilot valve member within the valve chamber of the main valve member. In the first position thereof, the pilot valve member blocks fuel below a predetermined pilot pressure from flowing through a pilot fuel path. In the second position thereof, the pilot valve member is displaced to allow fuel above the predetermined pilot pressure to flow through the pilot fuel path.
    Type: Application
    Filed: August 18, 2008
    Publication date: February 18, 2010
    Applicant: Delavan Inc.
    Inventors: Brandon P. Williams, Nathan J. James