Patents by Inventor David McDivitt

David McDivitt 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).

  • Manually operated tank valve
    Publication number: 20030164195
    Abstract: The present invention provides a valve apparatus comprising a conduit, including a first port, a second port, and a third port, a piston sealingly disposed within the conduit, including a first piston aperture and a second piston aperture, a piston valve configured to seal the second port, and a bore, extending from the first piston aperture to the second piston aperture, and configured to facilitate communication between the first port and the second port, and a valve, disposed within the conduit, and configured to seal the third port.
    Type: Application
    Filed: March 1, 2002
    Publication date: September 4, 2003
    Inventors: Erick Girouard, Derek Jean, David McDivitt