Appeal No. 2001-0250 Page 23
Application No. 08/283,074
Seybert teaches the limitations by producing signals
representing the cross-sectional area of "a pipe of
length 4 in.[,]" p. 1367, "an open tube of length 7.5 in.[,]"
p. 1368, and "a prototype automotive muffler." p. 1369.
Specifically, Figure 5 shows the reflection coefficient and
phase angle for the pipe and Figure 6 shows the corresponding
input impedance. Similarly, Figure 7 depicts the reflection
coefficient and phase angle for the tube and Figure 8 shows
the corresponding input impedance. Figure 9 displays the
reflection coefficient and transmission loss of the muffler.
Because the signals shown in Figures 5-9 represent the
cross-sectional area of a confined volume, we are not
persuaded that the reference discloses the aforementioned
limitations. Therefore, we affirm the rejection of claims 15
and 16 as anticipated by Seybert. We next address claims 23,
39, and 67.
C. Claims 23, 39, and 67
The examiner alleges, "Fig.3 of the Seybert et al
reference clearly shows the mounting of the transducers in the
sidewall of the tube." (Examiner's Answer at 8.) The
Page: Previous 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Next
Last modified: November 3, 2007