Patents by Inventor Alfred E. Flinn

Alfred E. Flinn 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).

  • Cleaning solution spraying system
    Patent number: 5626291
    Abstract: A cleaning solution spraying system for cleaning roofs and other outside areas on or about a house that includes in combination (a) a venturi unit, (b) a nozzle unit, (c) coupling hose to connect the venturi unit with a pressurized water stream source, (d) a tubular arrangement to connect the venturi unit with a source of liquid cleaning chemical, (e) a conduit joining the venturi unit to the nozzle unit, (f) a check valve to prevent flow of liquid through the tubular means into the venturi unit, (g) a shut-off valve to prevent flow of liquid through the conduit toward the venturi unit and (h) a check valve to prevent flow of liquid from the venturi unit into the coupling hose.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: May 6, 1997
    Inventors: Robert A. Flinn, Alfred E. Flinn