Patents by Inventor Helmut Schlechtriem

Helmut Schlechtriem 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: 5915459
    Abstract: Metal strip close to its final dimensions is cast using a strip-casting apparatus provided with a melt-holding vessel and a conveyor belt, in which a metal melt, in particular steel, flows out of a casting nozzle of a closable pouring chamber which can be put under vacuum and is connected via a siphon to a main chamber which can be put under pressure. The casting nozzle is inclined by about 45.degree. and is of trumpet-like configuration in the region of the orifice on the inside of the nozzle wall remote from the main chamber. Additionally, a shut-off element which can be opened in a slit-shaped manner is provided near the orifice of the casting nozzle.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: June 29, 1999
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Ulrich Urlau, Helmut Schlechtriem, Wolfgang Reichelt, Ewald Feuerstacke
  • 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