Patents Assigned to Koninklijke Nedschroef Holding N.V.
  • Threaded bolt having measurement planes for use in ultrasonic length measurements
    Patent number: 7001123
    Abstract: The invention relates to a threaded bolt provided with measurement planes for use in ultrasonic length measurement. After the threaded bolt has been fixed in a connection, such measurement is performed to determine the length change of the threaded bolt, in order to find out the tension within the threaded bolt in that way.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: February 21, 2006
    Assignee: Koninklijke Nedschroef Holding N.V.
    Inventor: Ferdinand Kersten