Patents Assigned to Outokumpu Copper Products OY
  • Copper alloy and method for its manufacture
    Publication number: 20040187978
    Abstract: The invention relates to a copper alloy having high recrystallization temperature and good conductivity used in brazed heat exchangers which alloy consists of 0.1 to 0.3% in weight chromium. The invention also relates to a method for the manufacturing of the alloy which method consists of the following steps: casting, cold working, annealing and another cold working before brazing.
    Type: Application
    Filed: April 9, 2004
    Publication date: September 30, 2004
    Applicant: OUTOKUMPU COPPER PRODUCTS OY.
    Inventors: Mariann Sundberg, Rolf Sundberg, Sture Ostlund
  • Working tool for pipe wall
    Patent number: 5782123
    Abstract: The invention relates to a working tool for working a pipe wall, so that a grooving is created on the inner wall of the pipe. The grooving is carried out by means of a rotating working tool of a grooving machine, and according to the invention, the structure of said tool brings about an efficient use and replacing of the balls provided in the tool for working the pipe to be grooved; it also enables the replacing of the balls without replacing the whole tool.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: July 21, 1998
    Assignee: Outokumpu Copper Products OY
    Inventor: Tapio Vakiparta