Equipment for forming high temperature plasmas

Claim 1

IN AN EQUIPMENT FOR CREATING A HIGH TEMPERATURE PLASMA BY MEANS OF AN ELECTRIC ARC POWERED BY ALTERNATING CURRENT, AT LEAST THREE ELECTRODES INCLUDING A FIRST ELECTRODE, A SECOND ELECTRODE HAVINGA CENTRAL CHANNEL COAXIAL WITH SAID FIRST ELECGRODE AND HAVING A POSITION FORWARD OF SAID FIRST ELECTRODE IN THE DIRECTION IN WHICH PLASMA IS TO FLOW, A THIRD ELECTRODE HAVINGA CENTRAL CHANNEL COAXIAL WITH SAID SECOND ELECTRODE AND HAVING A POSITION FORWARD OF SAID SECOND ELECTRODE IN THE DIRECTION IN WHICH PLASMA IS TO FLOW, A SOURCE OF DIRECT CURRENT FOR AN ARC TO BE SUSTAINED FROPM SAID FIRST ELECTRODE THROUGH THE CHANNELS OF SAID SECOND AND THIRD ELECTRODES AND HAVING ONE POLE CONNECTED TO SAID FIRST ELECTRODE, AND A SOURCE OF POLE CONNECTED TO SAID SECOND ELECTRODE, AND SOURCE OF ALTERNATING CURRENT TO OPERATE THE ARC CONNECTED TO SAID SECOND ELECTRODE AND TO SAID THIRD ELECTRODE, SAID SECOND AND THIRD ELECTRODES HAVING OPPOSED ANNULAR FACES INCLINED TOWARD THE AXIS OF SAID ELECTRODES IN THE DIRECTION IN WHICH PLASMA IS TO FLOW, SAID OPPOSED ANNULAR FACES FORMING A GAP FOR FLUID TO BE RECEIVED IN THE GAP AND BE OUTPUT TO PROJECT PLASMA IN THE DIRECTION IN WHICH PLASMA IS TO FLOW.