Patents by Inventor Oistein Smith Larsen

Oistein Smith Larsen 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).

  • Patent number: 3994481
    Abstract: A carriage with a crucible for tapping molten metal from aluminum electrolyzers and the like includes a movable tapping tube adapted to be inserted downwardly into the metal melt from which tapping shall take place, ejector means for sucking molten metal through the tapping tube, and a discharge tube for delivering collected metal from the crucible. There may also be provided compressed air means for discharging collected metal through the discharge tube. The tapping tube is mounted pivotably substantially in an inclined plane parallel to the longitudinal axis of the carriage and extending downwardly and outwardly to the side of the carriage from a tapping opening in a tapping head located on the crucible, to which tapping head the upper end of the tapping tube is coupled in the tapping position.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: November 30, 1976
    Assignee: A/S Ardal OG Sunndal Verk
    Inventors: Hermann Torvund, Oistein Smith Larsen