Patents by Inventor Richard A. Kettlety

Richard A. Kettlety 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).

  • Apparatus for spray shower maintenance
    Patent number: 4867870
    Abstract: Screen cleaning showers for a sludge dewatering rotary screen thickener are kept open and effective by periodically rotating a steel wire brush positioned coaxially within the cleaning shower manifold. Shower nozzles are set into the manifold to assure full mechanical wiping of a nozzle interior surface by the axially rotating brush bristles. Brush rotation is motor driven. An automatic controller periodically and simultaneously rotates the nozzle cleaning brush and opens a normally closed solenoid valve in the shower manifold drain line.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: September 19, 1989
    Assignee: Westvaco Corporation
    Inventors: Richard A. Kettlety, James P. Peters, Jr.