Patents by Inventor George J. Birds, Jr.

George J. Birds, 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).

  • Ore concentrator
    Patent number: 4363726
    Abstract: A spiral-type ore concentrating wheel has a plurality of interleaved, spiral bands tapering in height uniformly from the periphery of the wheel to its central, discharge aperture for moving concentrates to the aperture while the wheel is oscillated back-and-forth during advancement thereof in a predetermined rotated direction.
    Type: Grant
    Filed: May 27, 1981
    Date of Patent: December 14, 1982
    Inventor: George J. Birds, Jr.