Patents by Inventor Heinz Schermer

Heinz Schermer 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).

  • Process of making carbon-bonded refractory shaped articles
    Patent number: 4994216
    Abstract: A process of making carbon-bonded refractory shapes by preparing a mix of refractory materials, pitch or tar and a binder resin, molding the mix into shapes and hardening the shapes. A starting mix is used which, based on the added quantity by weight of pitch or tar, contains 1 to 10 weight % of hollow fibers. The refractory shapes have the advantage that they exhibit less cracking, and hardly any, or even no, breaking occurs during their fabrication.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: February 19, 1991
    Assignee: Didier-Werke AG
    Inventors: Ullrich Hintzen, Heinz Schermer, Ernst Luhrsen
  • Molten metal immersion pouring spout
    Patent number: 4640447
    Abstract: An immersion pouring spout for introducing molten metal, such as steel, into an ingot mold is provided with a top head and a cylindrical pouring tube including a protective external jacket attached by cement to the pouring tube and extending the entire length of the pouring tube. The jacket material has a thermal conductivity that is less than the thermal conductivity of the pouring tube material.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: February 3, 1987
    Assignee: Didier-Werke AG
    Inventors: Heinrich Geller, Peter Nold, Heinz Schermer, Ortwin Rave
  • Teeming pipe for use at the outlet of a melt container
    Patent number: 4290589
    Abstract: A refractory teeming pipe for use at the outlet of a melt container includes a refractory inner pipe member adapted to be connected to the outlet of a melt container, and a refractory outer pipe member telescopically slidably mounted about the inner pipe member for axial movement relative thereto between an upper retracted position and a lower extended position. The inner and outer pipe members include respective outer metal jackets. An upper refractory seal is supported by the outer pipe member and grips against the inner pipe member.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: September 22, 1981
    Assignee: Didier-Werke AG.
    Inventors: Ernst Luhrsen, Heinz Schermer