Patents by Inventor Peder R. Solheim

Peder R. Solheim 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: 4308116
    Abstract: Magnesium is electrolytically produced from a salt melt comprising magnesium chloride by the use of an electrolyzer having at least one electrolysis compartment and at least one metal separating compartment separated from the electrolysis compartment by a partition wall. Magnesium chloride is fed in solid form in a direction counter current to the flow of chlorine gas liberated during electrolysis to a melting room or chamber in the electrolysis compartment arranged such that contact between the magnesium chloride and the anodes of the electrolyzer is avoided. Flow patterns are produced in the melt to ensure that sludge forming impurities in the fed magnesium chloride are continuously removed from the electrolysis compartment to the metal separating compartment.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: December 29, 1981
    Assignee: Norsk Hydro a.s.
    Inventors: Knut A. Andreassen, Oystein Boyum, Henry K. Johnsen, Leiv B. Ognedal, Peder R. Solheim
  • Patent number: 4301339
    Abstract: A high current switch includes first and second contact plates, each having a contact surface. The contact plates are moved between a closed position with the contact surfaces in contact and an open position with the contact surfaces separated. An electric bridge has opposite ends connected to the contact plates and spans the contact surfaces. During opening of the switch, the electric bridge, in the form of a fuse, remains integral and provides a secondary electrical connection between the contact surfaces, thus preventing arcing therebetween. Upon complete opening of the switch, the electrical bridge ruptures.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: November 17, 1981
    Assignee: Norsk Hydro a.s.
    Inventors: Peder R. Solheim, Oddmund Wallevik
  • Patent number: 4198282
    Abstract: A replaceable cathode unit, suitable as a module for the building up of stable, non-deformable cathode systems in electrolyzers for the production of magnesium by melted salt electrolysis, is the form of a straight, longitudinal main cathode with active cathode side surfaces and two shorter transverse cathodes arranged approximately at right angles in relation to the main cathode. One transverse cathode is at the front end of the main cathode, and the other transverse cathode is at the back end of the main cathode.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: April 15, 1980
    Assignee: Norsk Hydro A.S
    Inventors: Knut A. Andreassen, Henry K. Johnsen, Peder R. Solheim, Sigbjorn Kleveland