Patents by Inventor William H. Noble

William H. Noble 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).

  • Vent system
    Patent number: 6244289
    Abstract: A vent assembly for a double case, rotary positive displacement meter permits venting of the outer housing chamber and inner mechanism chamber simultaneously through a single port in the outer housing to prevent damage to the rotor of the inner mechanism. A float/reed switch assembly can be provided to provide an indication of the need for venting if the vent is manually operated, or to automatically vent if an electrically operated valve is used.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: June 12, 2001
    Inventors: Helmut W. Hopfe, Christopher B. Laird, William H. Noble