Appeal No. 2004-0539
Application No. 09/921,254
26, 2003) and reply brief (Paper No. 14, filed August 11, 2003)
for the arguments thereagainst.
OPINION
In reaching our decision in this appeal, we have given
careful consideration to appellants' specification and claims, to
the applied prior art references, and to the respective positions
articulated by appellants and the examiner. As a consequence of
our review, we have made the determination which follows.
Like the examiner, we note that Brazier discloses a venturi
tube equipped burner which may be fluid fuel fired, gas fired, or
combination oil and gas fired (col. 2, lines 3-7), and a method
of operating such a burner for producing reduced emissions of
nitrogen oxides (NOX, same as NOx). The burner of Brazier
includes a venturi tube (21), a fuel pipe (13) and nozzle (26)
located centrally of the venturi tube, and a swirler (27)
positioned so that at least a primary portion of a flow of air
passes therethrough. A duct system (25, 25a, 25b, 25c) is
associated with the burner and arranged and adapted to
recirculate a stream of flue gas from a location in the
33
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