Patents by Inventor Erik Mats Raftsjö

Erik Mats Raftsjö 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).

  • Control of hot rolled product cross section under localized temperature disturbances
    Patent number: 6929167
    Abstract: A method of rolling a continuous welded billet having weld joints at successive locations along the billet and wherein the continuous welded billet is advanced through roll pairs of successive roll stands. The rolling conditions in two successive stands are adjusted so that when a weld joint is between the two stands compression is produced at the weld joint causing an increase of cross-sectional area at the weld joint. The rolling condition involves superimposing an increase in roll speed in the upstream roll stand compared to the downstream roll stand based on tracking information of the weld joint.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: August 16, 2005
    Inventors: David Teng Pong, Thomas George Maylor, Erik Mats Raftsjö