Patents Assigned to Plasma Materials
  • Plasma jet torch having converging anode and gas vortex in its nozzle for arc constriction
    Patent number: 4656330
    Abstract: An electric arc or plasma jet torch or heater has water-cooled electrode structures and a working gas injection arrangement which produce efficiently a very stable arc of maximum length at operating currents ranging from 20 amps to more than 400 amps so that the same torch can be used to satisfy a wide range of heating requirements.
    Type: Grant
    Filed: October 10, 1985
    Date of Patent: April 7, 1987
    Assignee: Plasma Materials
    Inventor: John W. Poole