Patents Assigned to Tomion Oy
  • Cooled plasma torch and method for cooling the torch
    Patent number: 7544913
    Abstract: The invention relates to a cooled plasma torch comprising an electrode, a plasma chamber surrounding the electrode, and a coolant space surrounding the plasma chamber with at least one common wall with the plasma chamber. The plasma torch further comprises means for feeding a coolant medium into the coolant space. The coolant medium pressure is reduced in a fashion that causes a phase change in the coolant medium as it is passed from the coolant feed means to the coolant space, whereby the plasma torch is cooled.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: June 9, 2009
    Assignee: Tomion Oy
    Inventors: Pekka Helenius, Kari Ahola