Patents by Inventor Hans Grabner

Hans Grabner 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).

  • Blowing lance arrangement
    Patent number: 4951928
    Abstract: A blowing lance to be used for the treatment of metallurgical melts includes a lance head having several expansion tuyeres directed to the bath level of the melt and penetrating a front plate of the lance head. They depart from at least one lance channel, which is peripherally surrounded by a supply channel and a return channel for a cooling medium. The supply channel is separated from the return channel by a flow deflection piece arranged above the front plate and penetrated by at least one connecting channel connecting the supply and return channels and provided for the cooling medium.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: August 28, 1990
    Assignee: Voest-Alpine Industrienlagenbau Gesellschaft m.b.H.
    Inventors: Manfred Eysn, Ernest Fuhrmann, Hans Grabner, Ernst Hollwarth, Hellmuth Smejkal