Patents by Inventor Gary J. Cambell

Gary J. Cambell 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).

  • Liquid storage vessel venting system
    Patent number: 5358009
    Abstract: A check valve assembly is provided for a liquid storage vessel, such as a tank. The system includes a housing for mounting to the tank. A fluid outlet and an air inlet are provided in the housing. An inlet check valve and an outlet check valve are provided on the housing for selectively venting the tank. An air filter is mounted over the air inlet to remove airborne contaminants. The check valve assembly may include a pressure gauge, a nitrogen source inlet, and an emergency relief valve.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: October 25, 1994
    Inventor: Gary J. Cambell