Patents by Inventor Robert Hellermann

Robert Hellermann 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).

  • Refractory channel with outer insulation and method for joint packing
    Patent number: 6279915
    Abstract: A tubular refractory channel (2) that can be inserted as a flowthrough for liquid metal into a thermally insulating outer lining (10) and can be connected with the outer lining (10) by a refractory mortar layer (9). In order to prevent liquid metal from penetrating into the mortar layer (9), even if the mortar layer contracts, the outer lining (10) overlaps the metal inflow-side of a front face (4) of the channel (2).
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: August 28, 2001
    Assignee: Didier-Werke AG
    Inventors: Daniel Grimm, Raimund Brückner, Jivan Kapoor, Robert Hellermann