Appeal No. 1998-1435 Page 13
Application No. 08/132,584
V. Applied Digital Data Sys, Inc., 730 F.2d 1440, 1446, 221
USPQ 385, 390 (Fed. Cir. 1984).
Here, Bird teaches a "first drying interstation 25,
comprising a pair of spaced, elongate air knives 26 and 27
...." Col. 4, ll. 53-55. The reference further teaches that
the air knives are dryer heads. Specifically, "[s]ubstantial
drying is produced by the first air knife 26, and the second
air knife 27 preferably is included, as illustrated, to insure
complete drying ...." Col. 5, ll. 8-10. Figure 1 of Bird,
moreover, shows that the air knives are separated by an air
gap.
The reference teaches that the first drying interstation
also includes "a vapor-extraction unit 28 containing an intake
fan and a [sic] outlet conduit 29 which conveys the volatile
vehicle vapors to a recovery unit, to the atmosphere or for 30
other safe disposal." Col. 4, ll. 55-58. Bird describes the
extraction of heated air by the vapor extraction unit as
follows. Knives 26 and 27 are elongate tubular
elements provided with an elongate narrow
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