Patents by Inventor Keith H. J. Wallis

Keith H. J. Wallis 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).

  • Incinerator and method
    Patent number: 3942455
    Abstract: Combustible debris is burned in an incinerator which has a screw conveyor penetrating a combustion chamber for moving debris therethrough. Burning of debris is initiated near one end of the combustion chamber and air for combustion is delivered through the screw conveyor and distributed throughout the chamber for assuring completion of combustion as debris is moved through the chamber.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: March 9, 1976
    Inventor: Keith H. J. Wallis