Patents by Inventor Erik Q. Dahl

Erik Q. Dahl 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).

  • Baking furnace for electrodes
    Patent number: 4678434
    Abstract: The present invention relates to a baking furnace for continuous production of elongated carbon bodies having uniform cross section, the baking furnace being intended to be moved continuously or substantially continuously in relation to a casing containing unbaked carbonaceous electrode paste with a speed which corresponds to a preset baking speed for the carbon body. The baking furnace comprises an outer steel shell (5) and a refractory lining (6) arranged on the inside of the shell (5), said refractory lining (6) defining a combustion chamber (7). A cooling chamber (16) is arranged between the upper part (15) of the refractory lining (6) and the casing (3). Above the cooling chamber (16) there is provided gas sealing means (23). An off-gas channel (11) is arranged below the refractory lining (16).
    Type: Grant
    Filed: August 7, 1986
    Date of Patent: July 7, 1987
    Assignee: Elkem a/s
    Inventors: Erik Q. Dahl, Arnfinn Vatland, Olaf T. Vegge
  • Method of producing mechanically strong pellets from non-oxidizable metal oxides
    Patent number: 4162284
    Abstract: A method of producing mechanically strong sintered pellets suitable for consumable use in smelting furnaces from non-oxidizable metal oxides is disclosed. The metal oxide is combined with a carbon-containing material whereafter the formed pellet is sintered in a shaft furnace.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: July 24, 1979
    Assignee: Elkem-Spigerverket A/S
    Inventor: Erik Q. Dahl