Patents by Inventor Robert C. Kays

Robert C. Kays 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).

  • Orifice valve assembly
    Patent number: 5108075
    Abstract: An orifice valve assembly which may be utilized to control the flow of a fluent material, such as powdered magnesium, propelled by gas under pressure, the valve controlling the flow in a linear manner.The valve includes a valve body having first and second adjacent concentric bores, the first bore being of a larger diameter than the second bore, and a cross-bore intersecting the first bore, the cross-bore having a cylindrical portion which intersects the first bore and frusto-conical inlet and outlet portions to either side of the cylindrical portion.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: April 28, 1992
    Assignee: ESM II Inc.
    Inventors: Ronald L. Downard, Larry J. Epps, Robert C. Kays