Appeal 2006-1263
Application 10/173,259
STATEMENT OF CASE
Appellants appeal under 35 U.S.C. § 134 (2002) from the Examiner’s
final rejection of claims 1-3, 6, 8, 10-12 and 14-20, which are all the claims
pending is this application. Claims 4, 5, 7, 9 and 13 have been cancelled.
We have jurisdiction under 35 U.S.C. § 6(b) (2002).
The Appellants’ invention relates to a bushing for fixing in air
injections holes pierced through the side walls of a combustion chamber for
a gas turbine (Specification 4).
We need only discuss independent claim 1 which reads as follows:
1. A combustion chamber for a gas turbine comprising
radially outer and radially inner side walls interconnected by
an end wall, the combustion chamber being received in a
casing so as to define an annular space between the
combustion chamber and the casing, in which space there is
a flow of air for combustion, for dilution, and for cooling the
combustion chamber, the side walls of the combustion
chamber being pierced by a plurality of holes having
respective bushings fixed therein to define air injection
passages for injecting air into the combustion chamber, each
bushing comprising a peripheral wall in which at least one
additional orifice is formed that opens out into the
combustion chamber in the immediate vicinity of the side
wall of the combustion chamber in which said bushing is
fixed so that the air passing through said orifice flows
substantially along said side wall, wherein each bushing is
2
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