Appeal No. 2002-0064
Application No. 09/084,042
lines 23-38). Pauletta’s apparatus includes a housing 10 in
which is located a heat exchanger in the form of a series of
concentric tubular members 16 spaced apart from one another to
provide therebetween inlet and outlet passageways 17 and 19.
These passageways are connected respectively to inlet and outlet
ports 12 and 14 by means of a manifold 22 (column 2, lines 1-6).
The operation of Pauletta’s apparatus is explained in the
paragraph spanning columns 2 and 3. Waste gas including noxious
constituents to be incinerated enters the apparatus through inlet
12 and is distributed across the concentric tube core of the heat
exchanger by the manifold 22. The gas is directed downwardly
into the spaces between the tubes 16 and at the bottom of the
heat exchanger is directed through a baffle tube 32 towards
heating means 24 where the gas is heated to a temperature of
about 1500oF to neutralize the noxious constituents. The high
temperature gas is then directed into the concentric outlet
passageway 19 in heat exchange relation to cooler waste gas
entering the heat exchanger. Given this description of the
construction and operation of Pauletta, appellant’s argument on
page 10 of the main brief that in Pauletta the flow of inlet gas
is kept separate from the flow of outlet gas, and that the flow
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