Appeal No. 2004-0929
Application No. 09/386,103
cylinder generally concentric with the inner cylinder (col. 2,
line 33 - col. 3, line 6; figure 2). The device being cooled can
have a solid cylindrical extension which protrudes at the
exterior of the device, is within the inner segmented cylinder
defined by the troughs of the heat exchanging section, and
conducts heat to the heat exchanging section (col. 2, lines
25-32; col. 3, lines 6-13; figure 2). Because this extension is
not required for operation of the device but, rather, is provided
for purposes of heat transfer, it reasonably can be considered
part of the heat sink assembly.
The appellants argue that Grandmont’s cylindrical protrusion
is part of the electronic device being cooled and, therefore, is
not part of the heat sink assembly (brief, page 14). Grandmont
teaches that the protrusion can be the heated part or an
extension thereof which protrudes at the exterior of the device
and conducts heat which is to be dissipated (col. 2, lines 25-
32). When the protrusion is an extension of the device rather
than being the heated part, the protrusion reasonably can be
considered to be not part of the device but, rather, part of the
heat sink assembly.
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