Patents by Inventor Bjorn Sjostrom

Bjorn Sjostrom 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).

  • Method of monitoring the distance between the rolls of a roll pair, and means for use in carrying out the method
    Patent number: 6295851
    Abstract: The invention relates to a method of monitoring the distance between the rolls of the roll pairs in a rolling line that includes a plurality of mutually sequential roll units where each unit includes a roll pair and a roller guide for leading a bar section or billet into said unit during a rolling operation. According to the method, the roller guides are provides with vibration measuring means for continuously sensing vibrations in the roller guides. These vibrations are analyzed with respect to frequency, for determining the distance between the rolls of the roll pair that immediately precedes or follows the roller guide.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: October 2, 2001
    Assignee: Morgardshammar AB
    Inventor: Bjorn Sjostrom