Appeal No. 2002-0346 Page 2
Application No. 08/952,673
BACKGROUND
The appellants’ invention relates to a braking system for a road vehicle. An
understanding of the invention can be derived from a reading of exemplary claim 1,
which reads as follows:
A braking system for a road vehicle, comprising:
a primary electronic braking circuit;
a back-up braking circuit having a source of back-up braking pressure
which varies in accordance with braking demand as initiated by a driver;
a braking actuator for braking a wheel on a vehicle axle;
a changeover valve which is biased to a back-up position in which the
back-up braking circuit is connected to the braking actuator and is
actuable to a normal braking position during correct operation of the
braking system to apply the primary electronic braking circuit to the
braking actuator; and
a regulating valve located in the back-up braking circuit between the
source of back-up braking pressure and the changeover valve and being
operable as a function of axle loading and back-up braking pressure to
regulate the supply of back-up braking pressure to the changeover valve.
The prior art reference of record relied upon by the examiner in rejecting the
appealed claims is:
Hommen et al. (Hommen) 5,147,114 Sep. 15, 1992
Claims 1, 3, 9-13 and 20 stand rejected under 35 U.S.C. § 103 as being
unpatentable over Hommen.
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