Patents by Inventor Herbert Lassnig

Herbert Lassnig 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).

  • Withdrawal device for a shaft furnace
    Patent number: 6280181
    Abstract: The invention relates to a shaft furnace (1), in particular a direct-reduction shaft furnace, having a bed (2) of lumpy material, in particular lumpy material containing iron oxide and/or iron sponge, having worm conveyors (3) which penetrate through the shell of the shaft furnace for discharging the lumpy material from the shaft furnace (1), which conveyors are arranged above the base area of the shaft furnace (1) and are mounted in the shell of the shaft furnace.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: August 28, 2001
    Assignee: Deutsche Voest-Alpine Industrieanlagenbau GmbH
    Inventors: Martin Schmidt, Herbert Lassnig, Johann Wurm, Kurt Wieder, Georg Aichinger, Josef Ziegler