Appeal No. 96-2457
Application 08/171,149
DECISION ON APPEAL
This is a decision on appeal from the examiner's final
rejection of claims 1 through 9 and 11 through 16, which are all
of the claims remaining in this application. Claim 10 has been
canceled.2
Appellants' invention relates to a centrifugal fan
having a slidably adjustable cutoff faring (32) located at, and
selectively positionable within, the exit port of the fan housing
for varying the area of the exit port such that the efficiency of
the centrifugal fan can be varied to match the output efficiency
of the fan to the desired air mass flow through an associated air
delivery system. The invention also addresses a method of opti-
mizing the performance characteristics of a specific centrifugal
fan for various air mass flow rates. Claims 1, 8 and 14 are
representative of the subject matter on appeal and a copy of
these claims may be found in the Appendix to appellants' brief.
2Claim 15 was amended subsequent to the final rejection in
a paper filed March 13, 1995 (Paper No. 6).
2
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