Appeal No. 2001-2019
Application No. 08/996,567 Page 10
switch 330 is moved to the open position (solid lines shown in
figure 2) the full output voltage from the secondary of
transformer 288 is applied to terminals G and H of module 34, and
the alarm units 308 will respond with simultaneous transmission
to the speakers 312 and operation of the flashing lights 310. If
the switch is then closed (dotted lines shown in figure 2) only
one half the secondary voltage will be applied to terminals G and
H. The speakers 312 will still respond, and by proper choice of
then operating parameters of the flashing lights 310, the
resultant d.c. voltage can be below the threshold voltage
required for operation of the flashing lights 310 (col. 19, lines
1-24); i.e., speaker only.
From the disclosure of Berry, III we find that in a non-
alarm condition, the alarm system is under supervisory control
with a negative d.c. voltage on terminal E with respect to
terminal F. During an alarm condition, the voltage on terminals
E and F is reversed, the speakers 312 will sound an alarm and the
flashing lights 310 will be turned on. We note that this
disclosure of Berry, III regarding the reversal of the voltage on
the terminals E and F during an alarm condition, was not brought
to our attention by either the examiner or the appellants. In
addition, we find that Berry, III activates speakers 312 and
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