Patents by Inventor Irvin B. King

Irvin B. King 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).

  • Additive injection valve
    Patent number: 4281935
    Abstract: A valve for adding ingredients to or sampling the fluid flowing through the valve includes an adjustable solid stem which can be extended through the flow path of a pipeline to form a seal with a seat positioned directly opposite the stem. An injection nozzle is fitted into the seat to permit addition of ingredients or sampling of the fluid when the stem is retracted from the seat. When the stem is seated, flow still occurs in the flow path.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: August 4, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gregory D. Cramer, Irvin B. King, Robert D. Sauerbrunn, Albert T. Strand