Appeal No. 98-0984
Application 08/428,561
the reduced cooling cost of placing the component inside the
housing against such factors as the space available in the
housing, redesign of the housing, accessibility of the
component, and the like.
Appellant argues at page 5 of the brief that
locating the capacitor component outside the housing is "a key
feature of the invention" because, since the capacitive
components tend to have a higher failure rate than the other
components, keeping the capacitive components exterior to the
hermetically sealed housing while keeping the other control
components inside the housing allows for quick and inexpensive
replacement of the components and avoids incompatibility with
refrigerants. This advantage of the "key feature" is not
disclosed in the specification, although there is no
requirement that it must be in order for appellant to argue it
as an advantage of his invention. In re Chu, 66 F.3d 292,
298, 36 USPQ2d 1089, 1094 (Fed. Cir. 1995). Nevertheless,
appellant's present assertion that the location of the
capacitor outside the housing is a "key feature" is somewhat
undermined by his disclosure that the rectifier and capacitor
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