Appeal No. 2005-0868
Application 09/969,728
not required” (answer, page 3). The examiner, however, does not
point out support in the reference for that argument.
The examiner argues (answer, page 7):
The temperature sensing of Makaran is described on
col. 5, lines 24-35, which state that over-temperature
can be determined by measuring a voltage drop across
any of several elements shown within motor power
supply 104.
Thus it appears that the supply voltage is sensed
to determine temperature.
The relied-upon portion of Makaran discloses, regarding the
protection and rotor position sensing circuit (106):
If an overtemperature circuit is used, the circuit will
preferably generate an analog 0 to 5 V signal using a
zener diode, semiconductor temperature sensor, RTD or
MOSFET 136. If MOSFET 136 is used, the RDSon of MOSFET
136 can be indirectly measured by measuring a voltage
drop across it. In each case, motor controller 110
converts the sensed analog signal to a digital value
and compares the digital value to a threshold limit or
a range to determine whether a fault occurred. If a
fault occurs, motor controller 110 invokes a fault
handling sequence as described below.
Thus, contrary to the examiner’s argument, this portion of
Makaran does not disclose sensing a supply voltage to determine
temperature.
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