Patents by Inventor Heinz-Withold Schmitz

Heinz-Withold Schmitz 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).

  • Device and process for the production of oxide-ceramic materials
    Patent number: 5211962
    Abstract: Device and process for fast cooling and solidifying of molten materials with a metal oxide base. The device comprises two metal cylinders with parallel axes, which rotate in opposite directions and are cooled. The metal cylinders exhibit a corrugated surface, and an elevation on the surface of one cylinder in each case engages in the recess of the surface of the other cylinder with formation of a gap. The melt is poured into the gap, drawn by force and simultaneously cooled under pressure.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: May 18, 1993
    Assignee: Lonza-Werke G.m.b.H.
    Inventors: Erwin Haas, Heinz-Withold Schmitz
  • Process for the production of oxide-ceramic materials
    Patent number: 4906419
    Abstract: Device and process for fast cooling and solidifying of molten materials with a metal oxide base. The device comprises two metal cylinders with parallel axes, which rotate in opposite directions and are cooled. The metal cylinders exhibit a corrugated surface, and an elevation on the surface of one cylinder in each case engages in the recess of the surface of the other cylinder with formation of a gap. The melt is poured into the gap, drawn by force and simultaneously cooled under pressure.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: March 6, 1990
    Assignee: Lonza-Werke G.m.b.H.
    Inventors: Erwin Haas, Heinz-Withold Schmitz
  • Method and apparatus for reclaiming foundry sand
    Patent number: 4491277
    Abstract: A method and apparatus for reclaiming foundry sand from contaminated foundry sand wherein ferromagnetic contaminants are first removed in a magnetic separating zone, and the remaining contaminated sand is thermally treated at a temperature sufficiently high to cause embrittlement of clay constituents among the remaining contaminants, and finally the thermally treated material is comminuted, preferably in a counterflow impact jet mill to recover a reclaimed foundry sand substantially free from contaminants.
    Type: Grant
    Filed: November 25, 1983
    Date of Patent: January 1, 1985
    Assignee: Klockner-Humboldt-Deutz AG
    Inventors: Hans Bauer, Heinz-Withold Schmitz