Appeal No. 95-5091 Page 3
Application No. 08/054,166
DISCUSSION
Gebert teaches detection of vehicle presence, length, and
speed using paired coaxial cables. (Abstract.) The cables
may be embedded below the roadway surface. (6:12-27; Fig. 1.)
Appellants' sensor limitation corresponds to Gebert's coaxial
cables.
"The twin coax cable
layout is preferably used in
combination with a vehicle
presence detector of any suitable
type." (10:20-22.) Gebert's
Figure 9 (right) shows a loop
detector 16 located in close (medial)
proximity to the coaxial cable sensors 15. (10:22-27.)
Scarzello teaches vehicle detection using a magnetometer that
detects both horizontal and vertical
vehicle signal components. (2:41-47; 3:14-
33.) The examiner substitutes Scarzello's
magnetometer for Gebert's loop sensor 16.
(E.g., Paper No. 20 at 5 (noting that any suitable detector
may be used) and at 5-6 (noting the magnetometer's
installation and power consumption benefits).)
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