Patents by Inventor Olof Sjödén

Olof Sjödén 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).

  • Publication number: 20150352635
    Abstract: A method of controlling the temperature of molten metal in a tundish during a ladle tapping cycle in a continuous casting process. The method comprises a) obtaining a measure of a temperature of molten metal in the tundish; b) comparing the measured temperature with a desired tundish melt temperature; c) determining whether the measured temperature is lower than desired; d) controlling the temperature of the molten metal in the tundish by with a heating arrangement, and an electromagnetic stirrer which stirs the molten metal in order to distribute heated molten metal in the tundish such that the temperature of the molten metal approaches the desired temperature.
    Type: Application
    Filed: February 19, 2013
    Publication date: December 10, 2015
    Inventors: Jan-Erik Eriksson, Olof Sjödén
  • Patent number: 8043403
    Abstract: A furnace plant including at least one furnace vessel comprising side walls, a bottom and a roof. At least one heater is configured to heat metal in the furnace vessel. A compartment includes sidewalls lined with refractory material. The compartment forms an extension of the furnace vessel. At least one electromagnetic stirrer is arranged outside and adjacent to the compartment. A refractory plate is arranged inside the compartment. The refractory plate includes an upper edge configured to be positioned below a meniscus of molten metal and includes a lower edge positioned spaced apart from a bottom of the compartment. The plate is arranged such that a gap between the plate and a wall of the compartment increases toward the bottom of the compartment.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: October 25, 2011
    Assignee: ABB AB
    Inventors: Bengt Rydholm, Erik Svensson, Alf Lundström, Helmut Hackl, Olof Sjödén, Jan-Erik Eriksson, Tord Kroon, Tord Lindblad
  • Publication number: 20100236362
    Abstract: A furnace plant including at least one furnace vessel comprising side walls, a bottom and a roof. At least one heater is configured to heat metal in the furnace vessel. A compartment includes sidewalls lined with refractory material. The compartment forms an extension of the furnace vessel. At least one electromagnetic stirrer is arranged outside and adjacent to the compartment. A refractory plate is arranged inside the compartment. The refractory plate includes an upper edge configured to be positioned below a meniscus of molten metal and includes a lower edge positioned spaced apart from a bottom of the compartment. The plate is arranged such that a gap between the plate and a wall of the compartment increases toward the bottom of the compartment.
    Type: Application
    Filed: October 9, 2008
    Publication date: September 23, 2010
    Applicant: ABB AB
    Inventors: Bengt Rydholm, Erik Svensson, Alf Lundström, Helmut Hackl, Olof Sjödén, Jan-Erik Eriksson, Tord Kroon, Tord Lindblad