Patents by Inventor Robert McWhinnie

Robert McWhinnie 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 for recovering residual tar or oil from a fluid medium
    Patent number: 5089121
    Abstract: There is disclosed a method and apparatus for recovering sticky tar or oil from a fluid medium, such as water or sand. The tar is first separated from the fluid medium, e.g. by an open mesh conveyor, and the separated tar is subjected to intense heating, e.g. from live flame tubes or heat exchangers using very high temperature circulating medium. This heating liquefies the tar rapidly, and the liquid tar is directed into a suitable collection tank, which may itself be provided with a heater to maintain the tar in its liquid state.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: February 18, 1992
    Assignee: Alba International Limited
    Inventor: Robert McWhinnie