Patents by Inventor Horst-Rudiger Langfeldt

Horst-Rudiger Langfeldt 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).

  • Vessel of a metallurgical furnace, especially of an arc furnace
    Patent number: 4696013
    Abstract: A furnace vessel (301) of a metallurgical furnace, in particular an electric arc furnace, in which the tap hole (305) is arranged within a lower vessel (303) which is oval or circular in plan view, in the vicinity of the wall of the vessel, and the upper vessel (309), above the tap hole (305), includes a vessel portion (320) which is displaced or is displaceable relative to the lower vessel towards the center of the vessel and in which there is provided a maintenance opening (327) for the tap hole (305) (FIG. 11).
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: September 22, 1987
    Assignee: Fuchs Systemtechnik GmbH
    Inventors: Joachim Ehle, Gerhard Fuchs, Klaus Kimmer, Horst-Rudiger Langfeldt