Patents by Inventor John S. Lighthall

John S. Lighthall 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: 4934393
    Abstract: A spray gun cleaning apparatus for containing and collecting toxic materials resulting from cleaning a spray gun with a cleaning fluid is disclosed. The apparatus includes an interior airflow passageway, a receptacle at an inflow end of the passageway for receiving the spray from the spray gun nozzle, and an outlet at the other end of the passageway for discharging airflow into the ambient environment. At least one filter/condenser is located within the passageway for condensing cleaning fluid vapor into liquid which flows into a waste container, preferably by gravity flow.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: June 19, 1990
    Assignee: John S. Lighthall
    Inventors: John S. Lighthall, Homer H. Lighthall