Appeal No. 97-0356
Application No. 08/086,150
provisional obviousness-type double patenting rejection of
claims 12, 14, 17 through 24, 26, 27 and 30.
Turning to the prior art rejections, Petry discloses
(Figure 1) a thermocouple system that comprises three
thermoelements 61, 62 and 68 connected to each other to form
at least two different thermocouple junctions 60 and 67. The
principal object of the Petry invention is to calibrate the
potentiometer circuit connected to the thermocouple junctions
(column 1, lines 63 through 66). One of the thermocouple
junctions produces a first signal having a value which is a
first function of a sensed temperature in oven 100, and the
other of the at least two different thermocouple junctions
produces a second signal having a value which is a second
function of the sensed temperature in the oven. The position
of the indicating device 78 relative to the potentiometer
winding 77 in the circuit is referred to as a "null" position,
and it is indicative of the temperature of the oven (column 7,
lines 7 through 23). When the temperature of the oven
changes, the circuit operates to move the indicator 78 to a
new "null" position (column 7, line 23 through column 8, line
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