Appeal 2007-1852
Application 10/936,925
12) Benoit states that a goal of his coating method is to
deliberately place abrasive coating material on the airfoil surfaces
in the corner areas where the leading and trailing edges of the
blade intersect the blade tip surface. (Benoit, col. 2, l. 67 – col. 3,
l. 4).
13) Benoit states that the disclosed coating method is applicable
to known types of compressor and turbine blades such as those
made of a cobalt or nickel superalloy, especially a single crystal
nickel superalloy, titanium, or a titanium alloy. (Benoit, col. 3, l.
65 – col. 4, l. 2).
14) Benoit teaches that the disclosed blade tip abrasive coatings
may be applied to the blade by electroplating, plasma spraying,
powder metallurgy techniques, laser welding, and brazing.
(Benoit, col. 4, ll. 6-10).
15) In an exemplary embodiment, Benoit discloses application
of a coating to a component by electrodepositing nickel, followed
by submersion of the component in a slurry of plating solution and
particulates. (Benoit, col. 6, ll. 10-16).
16) Benoit teaches the use of CBN particulate abrasive, as well
as “the use of other abrasive materials, including but not limited to
alumina and alumina-zirconia” (col. 5, ll. 7-10), in particular
aluminum oxide/zirconium oxide and aluminum oxide (Example
1).
ANALYSIS AND CONCLUSIONS
Appellants’ traversal of the Examiner’s final rejection is based solely
on the Examiner’s proposed combination of Benoit and Seth. In particular,
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