Jet flame cleaning and coating apparatus and method

Claim 2

A flame jet apparatus comprising a combustion chamber, pressurized means for feeding a hydrocarbon fuel and oxidant into said chamber, said chamber having at least one outlet orifice for releasing a combustion jet flame, a venturi type adapter disposed outwardly of said outlet orifice, a non-pressurized container for storing a material to be dispensed, and at least one pick-up line leading from said venturi adapter to said container, whereby passage of the combustion jet flame past the venturi adapter creates a vacuum in said pick-up line drawing said material into said flame, said apparatus being characterized by a pair of oppositely disposed pick-up lines positioned on a generally cylindrically formed venturi adapter, said adapter having a plurality of graduated, stepped internal bores that are provided with at least two apertures in each of said bores and which are located proximate to the point of entry of saId pick-up lines into said venturi adapter.

Claim 3

A flame jet apparatus comprising a combustion chamber, pressurized means for feeding a hydrocarbon fuel and oxidant into said chamber, said chamber having at least one outlet orifice for releasing a combustion jet flame, a venturi type adapter disposed outwardly of said outlet orifice, a non-pressurized container for storing a material to be dispensed, and at least one pick-up line leading from said venturi adapter to said container, whereby passage of the combustion jet flame past the venturi adapter creates a vacuum in said pick-up line drawing said material into said flame, said apparatus being characterized in that the venturi adapter is a twin venturi type aerated injector having two pick-up lines entering said adapter from opposite sides thereof, said adapter having its principal axes angularly disposed to the axis of said outlet orifice, and a pressurized air line entering said adapter along its principal axis prior to the points of entry of the pick-up lines.

Claim 4

A flame jet apparatus comprising a combustion chamber, pressurized means for feeding a hydrocarbon fuel and oxidant into said chamber, said chamber having at least one outlet orifice for releasing a combustion jet flame, a venturi type adapter disposed outwardly of said outlet orifice, a non-pressurized container for storing a material to be dispensed, and at least one pick-up line leading from said venturi adapter to said container, whereby passage of the combustion jet flame past the venturi adapter creates a vacuum in said pick-up line drawing said material into said flame, said apparatus being characterized in that the venturi adapter is a twin venturi type aerated injector having two pick-up lines entering said adapter from opposite sides thereof, said adapter having its principal axes angularly disposed to the axis of said outlet orifice, and a pressurized air line entering said adapter along its principal axis prior to the points of entry of the pick-up lines.

Claim 5

The apparatus of claim 1 in which the container stores abrasive particles, said container having a hollow projecting portion at the bottom thereof that connects with said pick-up line, and an air intake means being provided at the end of said projecting member.

Claim 6

The apparatus of claim 2 in which the container stores a coating material, said container having an inlet at the bottom thereof for a source of pressurized air, an aerator located above said inlet, a screen located above said aerator, and a cover for the container to keep the supply of aerated coating particles in the container.