Appeal No. 2000-1346
Application 08/730,516
which in turn transmits heat to the atmosphere” (page 3, lines
13 through 17).
As tacitly conceded by the examiner (see page 3 in the
final rejection), the suspended ceiling disclosed by the
Canadian reference does not respond to the limitations in
appealed claim 1 requiring “a plurality of spiral shaped coils
. . . each having a spiral shape” in thermally conductive
contact with the heat conducting tiles. According to the
appellants’ specification (see, for example, page 2), and
claim 1 itself, the spiral shape allows the coils to maintain
contact with the ceiling tiles even when the tiles flex, bend
or sag. The examiner’s reliance on Rupp to overcome this
deficiency in the Canadian reference is not well taken.
Rupp discloses a platen for use in a molding press. The
platen includes an embedded steam pipe or coil for heating the
articles molded. In contrast to a known zigzag pattern,
Rupp’s steam pipe has a spiral configuration to provide a more
even temperature over the whole of the platen. With reference
to the drawing figures, Rupp explains that
hot steam enters at the end 12 of the coil and
passes inwardly, following the direction of the
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