Appeal No. 1999-0348 Page 16
Application No. 08/663,471
Claim 19 recites a chemical delivery system comprising,
inter alia, a can, a thermally activated chemical, and an
electrical heater assembly. Claim 19 further recites that the
electrical heater assembly includes a resistance heater wire
having a parallel shunt at one end thereof which bypasses a
portion of the heater wire.
The examiner determined that claim 19 was obvious over
Laibow. The examiner found (first Office action, p. 3) that
Laibow does not disclose "a parallel shunt." The examiner
then concluded that "it would have been obvious to employ a
parallel shunt such as, for example, to operate a single light
to display that the heating element is operational."
The appellants argue (brief, pp. 17-18) that the claimed
parallel shunt (i.e., a resistance heater wire having a
parallel shunt at one end thereof which bypasses a portion of
the heater wire) is not taught, disclosed nor suggested by
Laibow, or any of the other cited references.
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