Appeal No. 96-3555
Application No. 08/297,021
Weihe discloses a process for cleaning articles carried on
conveyor 22 through a dishwashing machine. The dishwashing
machine utilizes a pre-wash zone 10, a wash zone 12 and a rinse
zone 14. The primary water supply enters the machine through
spray nozzle 32 in the rinse zone 14. Water draining from the
rinse zone 14 is collected in sump 28 and pumped to spray nozzle
34 in the pre-wash zone 10.8
Clague discloses a conveyor dishwasher. The dishwasher has
a pre-wash space 4, a wash space 5 and a rinse and sanitizing
space 6. Fresh hot water is supplied through pipe 13 to rinsing
and sanitizing devices 14 (located at the downstream end of the
rinse and sanitizing space 6 as shown in Figure I and II). The
used hot water is captured and recirculated in the rinse tank 12
which supplies water to the rinse spray tubes 8 (located at the
upstream end of the rinse and sanitizing space 6 as shown in
Figure I and II).9
Based on the teachings of Weihe and Clague, the examiner
concluded that it would have been obvious to one of ordinary
8See column 3, lines 1-26, of Weihe.
9See column 2, lines 16-32, of Clague.
9
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