Patents by Inventor William J. McCown

William J. McCown 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 and method for monitoring mass flow of solids
    Patent number: 5253535
    Abstract: A method and apparatus for transporting solid particulate material and calculating mass flow rate of the material through a rotary feeder having helical pockets is provided. At least one radiation source and two or more detectors are positioned in a manner whereby radiation flux is directed through, and attenuated by particulate material contained in a helical pocket. The amount of attenuation is measured at least when the pocket is filled with material and when the pocket has discharged most of the material. The difference in the amount of flux detected at the filled and discharged positions is used to determine the mass flow rate of the particulate material.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: October 19, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William J. McCown