Patents by Inventor Roger D. Kirk

Roger D. Kirk 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).

  • Carbon anode furnace cover construction
    Patent number: 4342178
    Abstract: A pit cover for retaining heat in an open top, ring-shaped, carbon anode baking furnace comprises an insulating cement cast into the form of the cover, at least one metal beam embedded in the insulating cement, and a plurality of stainless steel needles interspersed substantially throughout the insulating cement for reinforcement purposes. The insulating cement has a K factor of approximately 2 to 4, a density of approximately 80 to 100 lb./ft..sup.3, a cold crushing strength in the range of 1,000 to 5,000 psi, and a low iron content, preferably, less than 2%.
    Type: Grant
    Filed: February 8, 1980
    Date of Patent: August 3, 1982
    Assignees: National Steel Corp., Southwire Co.
    Inventors: Charles M. Benton, Franklin D. Arnold, George W. Kellogg, Roger D. Kirk