Method and apparatus for powdered metal deposition by oxy-fuel gas flame

Claim 1

A METHOD OF APPLYING METAL DEPOSIT TO A METAL SURFACE COMPRISING THE STEPS OF MIXING A COMBUSTIBLE GAS UNDER CONTROLLABLE PRESSURE WITH A COMBUSTION SUPPORTING GAS UNDER CONTROLLABLE PRESSURE IN A MIXING ZONE TO FROM A COMBUSTIBLE MIXTURE UNDER CONTROLLABLE PRESSURE; IGNITING SUCH MIXTURE AT A POINT SPACED FROM THE MIXING ZONE; MAINTAINING THE RESULTANT CONTROLLABLE VELOCITY FLAME IN CLOSELY SPACED EFFECTIVE HEAT TRANSFER RELATION WITH SUCH SURFACE TO ELEVATE THE TEMPERATURE THEREOF TO THE INCIPIENT FUSION TEMPERATURE, WHILE ASPIRATING ADDITONAL GAS INTO THE MIXTURE BETWEEN THE MIXING ZONE AND THE IGNITION POINT; AND, WHEN THE SURFACE TEMPERATURE ATTAINS THE FUSION VALUE, CONTROLLABLY ENTRAINING POWDERED METAL, FROM A SOURCE OF SUPPLY OF THE LATTER, INT SUCH ADDITIONAL GAS FOR IMPINGEMENT ONTO THE HEATED METAL SURFACE BY SUCH FLAME AT A RATE CONTROLLED BY THE PRESSURE INDUCED VELOCITY OF THE MIXTURE.

Claim 2

A METHOD OF APPLYING METAL DEPOSIT TO A METAL SURFACE COMPRISING THE STEPS OF MIXING A COMBUSTIBLE GAS UNDER CONTROLLABLE PRESSURE WITH A COMBUSTION SUPPORTING GAS UNDER CONTROLLABLE PRESSURE IN A MIXING ZONE TO FROM A COMBUSTIBLE MIXTURE UNDER CONTROLLABLE PRESSURE; IGNITING SUCH MIXTURE AT A POINT SPACED FROM THE MIXING ZONE; MAINTAINING THE RESULTANT CONTROLLABLE VELOCITY FLAME IN CLOSELY SPACED EFFECTIVE HEAT TRANSFER RELATION WITH SUCH SURFACE TO ELEVATE THE TEMPERATURE THEREOF TO THE INCIPIENT FUSION TEMPERATURE, WHILE ASPIRATING ADDITONAL GAS INTO THE MIXTURE BETWEEN THE MIXING ZONE AND THE IGNITION POINT; AND, WHEN THE SURFACE TEMPERATURE ATTAINS THE FUSION VALUE, CONTROLLABLY ENTRAINING POWDERED METAL, FROM A SOURCE OF SUPPLY OF THE LATTER, INT SUCH ADDITIONAL GAS FOR IMPINGEMENT ONTO THE HEATED METAL SURFACE BY SUCH FLAME AT A RATE CONTROLLED BY THE PRESSURE INDUCED VELOCITY OF THE MIXTURE.