Patents by Inventor George D. Barnes

George D. Barnes 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).

  • Blending of fluid materials
    Patent number: 4436433
    Abstract: Particulate material such as sand is classified in two or more classifying devices (13 and 15) which operate on the principle of "hindered settling" each to provide a coarse underflow fraction and a fine overflow fraction. A chosen blend 12 of the underflow fractions is provided by pneumatic control circuitry (FIGS. 2,5,6) which actuates flow control valves (14 and 16) to open, by amounts in accordance with a chosen blend ratio, only when there is sufficient material available for blending.
    Type: Grant
    Filed: February 3, 1982
    Date of Patent: March 13, 1984
    Assignee: Wilkinson Rubber Linatex Limited
    Inventor: George D. Barnes