Patents by Inventor Francois Heckel

Francois Heckel 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).

  • Furnace, in particular an electric furnace, for treating liquid metal
    Patent number: 5410565
    Abstract: The furnace includes a vessel closed by a floating roof, and a sealing means mechanism between the roof and the vessel. The sealing mechanism includes two joint surfaces, one of which is arranged on the peripheral edge portion of the roof whereas the other is arranged on the peripheral edge portion of the vessel. The first surface is substantially toric and the second surface substantially frustoconical. The joint surfaces permit the centering of the roof relative to the axis of the vessel. The peripheral edge portion of the vessel is provided with a coping element on which one of the joint surfaces is arranged.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: April 25, 1995
    Assignee: Unimetal Societe Francaise des Aciers Longs
    Inventors: Jacques Blum, Francois Heckel, Jacques Le Goff, Daniel Pernet, Dominique Rocchi