Appeal No. 95-3382
Application 07/967,465
monitoring arrangement exists in Melocik to monitor the total
current flow through the contactor coils. When the coil current
becomes excessive either because of normal use or a short circuit
in a contactor or contactors, the overall coil drivers 16 are
disabled when the total sense current exceeds a given value. As
expressed at col. 5, lines 38 through 47 and col. 6, lines 55
through 59, when excessive current flowing through the shunt
resistors 94, 94' continues to exist, the multivibrator 100
repetitively toggles the NOR gates off for the preselected period
of time in accordance with the normal operation of the
multivibrator. This prevents the operation of the vehicle 120 in
Fig. 3 and further damage to the overall control system 10.
Melocik contains no additional teachings required of the
limitations of independent claim 1 on appeal once a fault is
determined to sequentially activate each drive in turn up to the
point of disabling the operation of the system when the specific
drive exhibiting the over current condition is found and
permanently disabled from the operation of the system.
Independent claim 4 contains the additional feature of
simultaneously activating the remaining drives after the drive or
drives have been logically excluded when its over current
4
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Last modified: November 3, 2007