Appeal No. 2003-1723
Application 09/849,705
the base claim and any intervening claims.” Accordingly, the
appeal as to claims 4 through 6 is dismissed, and only the
examiner’s rejection of claims 1 through 3, 7 and 8 remains for
our consideration on appeal.
Appellants’ invention is directed to a system for monitoring
the operation of a heater (10) for heating oil used in
lubricating the moving parts of a compressor (14). As noted on
page 2 of the specification,
[T]he sensing is preferably accomplished by a transformer in
combination with an amplifier providing a feedback signal to
the programmed microprocessor. The transformer is installed
in the line which carries the electrical current flowing
through the resistance heater. The microprocessor checks
for the presence of an appropriate voltage level from the
amplifier. In the event that the voltage level is not above
a threshold level, the microprocessor sends an alarm signal
indicating that the crankcase heater is not operating
properly.
Independent claim 1 is representative of the subject matter
on appeal and a copy of that claim can be found in Appendix A of
appellants’ brief.
2
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