Flame-spraying torch

Claim 1

A FLAME-SPRAYING TORCH COMPRISING A BODY, A TIP SECTION DISPOSED IN FRONT OF SAID BODY, SEPARATE LONGITUDINAL PASSAGEWAYS IN SAID BODY FOR SEPARATELY CONDUCTING A PRESSURIZED COMBUSTIBLE AND A PRESSURIZED COMBUSTION SUPPORTING GAS PARTIALLY THROUGH SAID BODY, A MIXING CHAMBER IN SAID BODY, SAID PASSAGEWAY FOR SAID PRESSURIZED COMBUSTIBLE GAS JOINING SAID MIXING CHAMBER, A DISCHARGE PASSAGEWAY EXTENDING FROM SAID MIXING CHAMBER THROUGH THE FRONT OF SAID BODY AND SAID TIP SECTION FOR DISCHARGING GAS FROM SAID MIXING CHAMBER, A POWDER SUPPLYING PASSAGEWAY EXTENDING THROUGH SAID BODY INTO COMMUNICATION WITH SAID PASSAGEWAY FOR PRESSURIZED COMBUSTION SUPPORTING GAS AT AN INTERSECTION THEREWITH, SAID SEPARATE LONGITUDINAL PASSAGEWAYS HAVING MEANS FOR FACILITATING MAINTENANCE OF AN EFFICIENT FLAME WHEN THE SUPPLIED PRESSURE OF COMBUSTION SUPPORTING GAS IS GREATER THAN THE SUPPLIED PRESSURE OF SAID COMBUSTIBLE GAS, AND AN INTERMEDIATE PASSAGEWAY CONNECTING SAID INTERSECTION WITH SAID MIXING CHAMBER AND CONDUCTING SAID GREATER SUPPLIED PRESSURE OF PRESSURIZED COMBUSTION SUPPORTING GAS FROM SAID INTERSECTION TO SAID MIXING CHAMBER WHEREBY SAID POWDER SUPPLYING PASSAGE WAY IS ISOLATED FROM SAID MIXING CHAMBER TO PREVENT SAID COMBUSTIBLE GAS FROM FLOWING BACKWARDLY INTO SAID POWDER SUPPLYING PASSAGEWAY FROM SAID MIXING CHAMBER AND ACCORDINGLY MINIMIZING FLASH BACK.