Patents by Inventor Wilhelm Sieweke

Wilhelm Sieweke 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).

  • Patent number: 4832106
    Abstract: The invention provides a method and a set-up for production of castings containing cast-in steel tubes, preferably to provide cooling elements for metallurgical furnaces. The castings are from cast steel and the steel tubes are cast-in with a superheated cast steel melt. Before the casting the tubes are filled with a granular, highly thermal conductive, refractory material. In order to assure that the cast-in steel or respectively cooling tubes remain free from leaks, the invention provides to employ as a filling material one or more of the materials: burned magnesite (sintered magnesite), corundum, sintered aluminum oxide, chromite, silicon carbide, silicon nitride.
    Type: Grant
    Filed: July 27, 1982
    Date of Patent: May 23, 1989
    Assignee: Hoesch Werke Aktiengesellschaft
    Inventors: Heinz L. Bucking, Christoph Knoche, Wilhelm Sieweke
  • Patent number: 4216946
    Abstract: A gate arrangement, especially for counterpressure blast furnaces, including a seal lid having an annular soft seal-insert and a steel seal-ring arranged at the lower end of the gate, which corresponds to the soft seal-insert. The arrangement also includes heating means operatively connectible to the steel seal-ring about its periphery.
    Type: Grant
    Filed: July 20, 1979
    Date of Patent: August 12, 1980
    Assignee: Paul Wurth S.A.
    Inventors: Wilhelm Sieweke, Hubert Nettler, Jurgen Burmann