Patents Assigned to Ugine Gueugnon S.A.
  • Double-wall welded tube
    Patent number: 4674542
    Abstract: The double-wall welded tube has two portions of the tube, in the region of which the weld (10) is located, which are each defined by the outer surface of a fold (6, 7) formed by the material constituting, in this region, the double wall of the tube. In this way, the regin in which the weld is effected is perfectly homogeneous and the weld can therefore be of very high quality.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: June 23, 1987
    Assignee: Ugine Gueugnon S.A.
    Inventor: Raymond Baillet