Patents by Inventor Karl-Heinz Spitzer

Karl-Heinz Spitzer 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: 6148903
    Abstract: A refractory guide member and a method for heating the refractory guide member by use of an inductor, where at least one collateral electromagnetic field located in a region spaced apart from the inductor is generated by the inductor. The mold part is made of an electrically conductive layer with several insulating interrupting slots for the controlled deflection of eddy currents from a main field generated by the inductor into a region spaced apart from the inductor.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: November 21, 2000
    Assignee: Didier-Werke AG
    Inventors: Raimund Bruckner, Rudiger Grau, Daniel Grimm, Seyed Masoud Hashemi, Karl-Heinz Spitzer
  • Patent number: 6123186
    Abstract: A supporting arrangement for the transport belt in thin strip casting plants. The liquid steel is cast onto the circulating transport belt. On its underside, the transport belt has devices for generating a negative pressure and for supporting the belt as well as for cooling. In the past, rollers were used for supporting the belt. Between the supporting points of the belt on the rollers, upward curvatures of the belt may occur. This is avoided by the use of supports of which the spacings measured transversely to the transporting direction are greater than the lengths of the supports in this direction.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: September 26, 2000
    Assignee: Mannesmann AG
    Inventors: Klaus Schwerdtfeger, Karl-Heinz Spitzer, Wolfgang Reichelt, Ulrich Urlau, Ewald Feuerstacke, Joachim Kroos
  • Patent number: 6112954
    Abstract: A nozzle for thin strip casting plants, especially for steel strip. In casting plants of this type, the liquid steel must be applied on a carrier from the nozzle forming a casting gap. At least one primary coil and a secondary coil are arranged at the nozzle, wherein the secondary coil is water-cooled and projects into the area of the casting gap.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: September 5, 2000
    Assignee: Mannesmann AG
    Inventors: Klaus Schwerdtfeger, Karl-Heinz Spitzer, Wolfgang Reichelt, Ulrich Urlau, Joachim Kroos, Michael Bruhl
  • Patent number: 5901776
    Abstract: A refractory guide member and a method for heating the refractory guide member by use of an inductor, where at least one collateral electromagnetic field located in a region spaced apart from the inductor is generated by the inductor. The mold part is made of an electrically conductive layer with several insulating interrupting slots for the controlled deflection of eddy currents from a main field generated by the inductor into a region spaced apart from the inductor.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: May 11, 1999
    Assignee: Didier-Werke AG
    Inventors: Raimund Bruckner, Rudiger Grau, Daniel Grimm, Seyed Masoud Hashemi, Karl-Heinz Spitzer
  • Patent number: 5836377
    Abstract: A process for cooling molten steel, in particular by continuous casting of hoop-steel. At least part of the molten mass that leaves a metallurgical vessel through a metal nozzle solidifies when contacting a cooling surface. A gaseous stream that forms a reducing atmosphere is directed onto the surface of the freely accessible liquid hoop-steel immediately after it leaves the metal nozzle and the surface of the hoop-steel is exposed to this gaseous atmosphere at least until it is completely solidified.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: November 17, 1998
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Wolfgang Reichelt, Ulrich Urlau, Paul Freier, Karl-Heinz Spitzer
  • Patent number: 5740852
    Abstract: A conveyor belt of a continuous strip-casting device for casting strips of metal, particularly steel, which belt is guided by a driven drum and a drum horizontally adjacent to the driven drum and displaceable for tensioning the belt. The belt rests in this connection on a support arranged between the drums and the side thereof facing away from the cast strip is cooled. The conveyor belt has, on the side remote from the cast strip, uniformly distributed blind holes. The blind holes are separated by webs of a minimum width. The total surface area of the webs is 0.15 to 0.4 times the total surface area of the belt. The bottoms of the blind holes have a wall thickness which, upon heating by the cast strip with simultaneous cooling of the inside surface of the blind holes, permits a bulging of the bottom of less than 1 mm.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: April 21, 1998
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Ewald Feuerstacke, Helmut Schlechtriem, Ulrich Urlau, Wolfgang Reichelt, Karl-Heinz Spitzer, Paul Freier, Frank Koch, Joachim Koch