Appeal 2006-1263
Application 10/173,259
The bushing is configured to introduce air into the combustion
chamber. The bushing has a peripheral wall and at least one additional
orifice (Figure 3, element 16) formed in the peripheral wall that opens into
the combustion chamber. The orifice directs air substantially along the side
wall of the combustion chamber. The bushing is of substantially elliptical
right section (Specification at 4; see Figure 3).
Monk describes a bushing formed integrally in a combustion chamber
or as a separate member (col. 1, ll. 18-20) meeting all the limitation of Claim
1 except for the bushing having a substantially elliptical right section (see
Figure 2).
Rice describes bushings pierced through the side walls of a
combustion chamber for a gas turbine having a substantially elliptical right
section (col. 5, ll. 5-10; Figure 3).
PRINCIPLES OF LAW
The test for obviousness is what the combined teachings of the
references would have suggested to one of ordinary skill in the art. See In re
Young, 927 F.2d 588, 591, 18 USPQ2d 1089, 1091 (Fed. Cir. 1991) and In
re Keller, 642 F.2d 413, 425, 208 USPQ 871, 881 (CCPA 1981). Moreover,
in evaluating such references it is proper to take into account not only the
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