Patents by Inventor Mitchell J. Lillywhite

Mitchell J. Lillywhite 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 clarifying liquid
    Patent number: 4193877
    Abstract: An apparatus for clarifying liquid waste having a tank with a center column mounted in its center and suction pipes to remove sludge which has settled to the floor of the tank. The center column is provided with an influent trough to introduce liquid waste into the tank, and ports are formed in the upper part of the column to introduce waste into the influent trough. The ports and the influent trough are located at about the level of the liquid in the tank so that the waste leaving the ports creates a radially outward current on the surface of the liquid in the tank to carry scum towards the periphery of the tank for collection.
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: March 18, 1980
    Assignee: Envirotech Corporation
    Inventor: Mitchell J. Lillywhite