Patents by Inventor Heinrich-Otto Rosser

Heinrich-Otto Rosser 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).

  • Method and apparatus for holding or increasing the temperature in a metal melt
    Patent number: 4632700
    Abstract: Method and apparatus for supplying thermal energy to a metal melt present in a receiving vessel after having been discharged from a melting furnace, the receiving vessel having a central axis, by disposing at least two plasma torches above the melt in the receiving vessel to direct a transferred electric arc at the melt; and operating the torches with alternating current and with a gas which is inert to the metal melt, while cooling the torches with water.Apparatus according to the invention includes a cover over the top of the vessel, the cover having a passage for the electrodes, and a component establishing a gas-tight seal between the cover and the electrodes.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: December 30, 1986
    Assignee: Fried. Krupp Gesellschaft mit beschrankter Haftung
    Inventors: Hans J. Bebber, Dieter Neuschutz, Heinrich-Otto Rosser