Appeal No. 1996-1141
Application 08/109,166
a second gas mixture comprising pyrophoric gas (silane) into said chamber through a
second outlet at a second position 16 (Fig. 1). Soneta discloses that the second gas
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mixture flows through a second inlet which is downstream of said first position. Soneta
teaches that the first flow of gas (air) and the second flow of gas (silane) are combined
(column 6, lines 23-25). Soneta discloses the first flow of gas (air) and the second flow of
gas (silane) are burned through the reaction of the first flow of gas (air) and the second flow
of gas (silane) in the combustion chamber (column 8, lines 10-13, and claim 1).
Soneta does not disclose the use of turbulence as required by appellants’ claim 20
as a step within their method of burning exhaust gases containing gaseous silane.
Coldren teaches the use of turbulence to initiate a reaction between reactive gases
in a reaction process which occurs at supersonic velocity (column 4, lines 70-73). Coldren
teaches a process for mixing reactive gases such as oxygen and hydrocarbons in which
source streams of difference gases are divided into narrow small streams which
accelerate to supersonic velocity and then discharged into an elongated mixing zone so
that each (except those at the periphery of the zone) is laterally adjacent to a plurality of
narrow streams of another gas (column 1, lines 28-30 and column 2, lines 14-20).
4 We note that Figure 1 shows that air (first gas mixture) enters air feed pipe 9 and
flows into air chamber 7 where air permeates through air permeable porous filler material
19 and into the combustion chamber 5 downstream of the silane (second gas mixture)
which enters the combustion chamber through exhaust introduction pipe 13.
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