North American Manufacturing Company, Inc.

Thomas F Robertston

John N Newby

Bruce E Cain

Mark C Hannum

Thomas B Neville

An apparatus includes a furnace structure defining a reaction zone. A burner structure communicates with the reaction zone through a burner port. The burner port is centered on a burner axis and has a radius. A fuel inlet structure communicates with the reaction zone through a fuel port. The fuel port is centered on a fuel port axis that is spaced radially from the burner axis a distance within a range from about twice the radius to about six times the radius. The fuel port axis is skewed relative to the burner axis to direct the fuel emerging from the fuel port to flow into the reaction zone along a spiral flow path.

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Medina Township, OH, United States of America

Thomas F Robertston