Valve arrangement for a metal spraying gun

Claim 1

IN A METAL SPRAYING APPARATUS OF THE TYPE IN WHICH METALLIC MATERIAL IS FUSED IN A FUSION ZONE BY A FLAME PRODUCED FROM A COMBUSTIBLE GAS AND A COMBUSTION SUPPORTING GAS, AND THE FUSED METAL IS ATOMIZED IN SAID FUSION ZONE BY A PROPELLING FLUID, FLOW CONTROL MEANS COMPRISING THE COMBINATION OF (A) THREE CONDUITS FOR RESPECTIVE PASSAGE THERETHROUGH OF TWO GASES AND OF A PROPELLING FLUID TO A FUSION ZONE; (B) A VALVE MEANS ARRANGED IN EACH CONDUIT, EACH VALVE MEANS BEING MOVABLE BETWEEN TWO POSITIONS FOR OPENING AND CLOSING A CONDUIT, A FIRST AND A THIRD ONE OF SAID VALVE MEANS CONTROLLING THE FLOW OF SAID GASES, AND THE SECOND VALVE MEANS CONTROLLING THE FLOW OF SAID FLUID; (C) OPERATING MEANS FOR MOVING SAID FIRST VALVE MEANS BETWEEN SAID POSITIONS THEREOF; (D) MOTION TRANSMITTING MEANS OPERATIVELY CONNECTED TO SAID FIRST AND SAID SECOND VALVE MEANS FOR PRODUCING DELAYED OPENING AND DELAYED CLOSING MOVEMENT OF SAID SECOND VALVE MEANS WHEN SAID FIRST VALVE MEANS IS MOVED BY SAID OPERATING MEANS FROM THE CLOSING TO THE OPENING POSITION, AND FROM THE OPENING TO THE CLOSING POSITION THEREOF RESPECTIVELY; AND (E) CONNECTING MEANS FIXELY CONNECTING SAID THIRD VALVE MEANS TO ONE OF SAID FIRST AND SECOND VALVE MEANS FOR JOINT OPENING AND CLOSING MOVEMENT THEREWITH.