Patents by Inventor Virgil C. Plummer, Jr.

Virgil C. Plummer, Jr. 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).

  • Vibratory storage pile discharger means
    Patent number: 4448332
    Abstract: This invention provides an improved vibratory storage pile discharger unit for promoting the downward flow of material from a storage pile of a flowable material, such as coal, limestone, woodchips, sulphur and the like, through an opening in a generally horizontal surface on which the pile is supported and into another area located beneath that pile-supporting surface.
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: May 15, 1984
    Assignee: Vibranetics, Inc.
    Inventor: Virgil C. Plummer, Jr.