Patents Assigned to Granges Essen Aktiebolag
  • Method for insulating tubing
    Patent number: 3974013
    Abstract: A method of insulating tubing comprising the steps of providing the tubing with a jacket of insulating material in web form, fixing the jacket with regard to its described diametrical dimensions, e.g. with a fixing casing, enclosing the jacketed tubing in a continuous tubular outer casing, e.g. by applying relative movement in the longitudinal direction thereof, and subsequently breaking the fixed state of the jacket, thereby to enable the latter to conform in shape to the inner wall of the outer casing.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: August 10, 1976
    Assignee: Granges Essen Aktiebolag
    Inventor: Erling Roos