Patents Assigned to Ispen Industries International Gesellschaft mit beschrankter Haftung
  • Apparatus for control of the carburization of parts in a vacuum furnace
    Patent number: 4232852
    Abstract: An apparatus for the control of the carburizing of parts under vacuum in a acuum furnace, with which as a carbon carrier a hydrocarbon gas is introduced controlled in the furnace. A detector detects the occurrence of a soot mist formation. Upon the occurrence of the soot mist a feeder for the hydrocarbon addition is completely or partially interrupted. The detector cooperates with the feeder such that the hydrocarbon addition is again received when the soot mist formation has decayed.
    Type: Grant
    Filed: May 2, 1979
    Date of Patent: November 11, 1980
    Assignee: Ispen Industries International Gesellschaft mit beschrankter Haftung
    Inventors: Ferdinand Limque, Franz Bless