Appeal No. 2005-1316
Application No. 09/735,503
according to an orientation including all angles
between 00-900 relative to an engine axial direction to
thereby effect a desired percentage change in the
natural frequency of the turbine bucket.
6. A method of tuning turbine bucket natural
frequency comprising:
(a) placing a crystal seed along a desired orientation
including all angles between 00-900 relative to an
engine axial direction; and
(b) investment casting the turbine bucket with a single
crystal alloy, wherein the desired orientation is
selected to tune torsional frequencies without
affecting flexure frequencies and to effect a desired
percentage change in the turbine bucket natural
frequency.
PRIOR ART
The sole prior art reference relied upon by the examiner is:
Gemma et al. (Gemma) 4,605,452 Aug. 12, 1986
REJECTION
Claims 1 through 4 and 6 through 8 stand rejected under
35 U.S.C. § 102(b) as anticipated by the disclosure of Gemma.
OPINION
We have carefully reviewed the claims, specification and
applied prior art, including all of the arguments advanced by
both the examiner and the appellant in support of their
respective positions. This review has led us to conclude that
the examiner’s Section 102 rejection is well founded.
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