Patents by Inventor Willi Luchs

Willi Luchs 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).

  • Slide gate nozzle or shut-off control valve for metallurgical vessel and refractory shut-off parts thereof
    Patent number: 5154875
    Abstract: A slide gate nozzle or shut-off control valve to be mounted in a wall or lining of a vessel containing molten metal includes shut-off parts each of which are provided with passages or openings. The parts project into the vessel interior and each part has at least one approximately planar sliding surface, with such surfaces abutting and being displaceable relative to one another in order to open or close the passages or openings.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: October 13, 1992
    Assignee: Stopinc Aktiengesellschaft
    Inventor: Willi Luchs