Appeal No. 2000-1954
Application No. 08/593,459
Opinion
Appellants argue at page 5 of the brief that Hauenstein does
not teach the detection of the voltage supplied to the
transformer, i.e., the power supply voltage. The argument is
made that the detector resistor RF in Figure 1 of Hauenstein does
not detect the power supply voltage US but rather detects the
energy Upr stored in transformer Tr.
This argument is not commensurate in scope with the claims
and is not persuasive. The claims do not require detecting the
power supply voltage, such as US in Hauenstein, which is applied
from a power source to the transformer. For example, claim 1
recites that a controller “. . . detects a voltage which is
applied from a power source to said transformer” (emphasis
added). At column 4, lines 11-16, the reference teaches that the
trigger circuit 12 receives its information from a comparator 13
producing an output signal as soon as the measuring signal
(voltage or current which corresponds with the energy stored in
the transformer) at the terminal 1 falls below a defined
switching threshold. The voltage referred to is “. . . a voltage
which is applied from the power source . . .”, not illustrated,
which source supplies voltage US at the left-most terminals of
Figure 1.
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