Appeal No. 95-5064
Application 08/049,463
objected for depending from a rejected claim. Independent claim
9 and its dependent claims 10-12 have been allowed. We reverse.
The claimed invention relates to hold-up circuitry for
supplying power to a load (e.g., a computer) during momentary
interruptions of the voltage source. The hold-up circuit
includes power storage means (e.g., a capacitor) for providing
voltage to the load during voltage source interruptions and
safety means for preventing the continuation of discharge from
the power storage means when the voltage being provided to the
load drops below the predetermined level at which the load is
designed to operate.
Claim 1 is illustrative of the invention and reads as
follows:
1. In combination with a source of power, an
electrical load connected to the source for operation at an
operating voltage above a predetermined level, hold-up circuit
means for maintaining said operation of the load during momentary
interruption in power of the source, comprising: power storage
means connected to the load for supply of said operating voltage
thereto, impedance means connected to the power storage means for
regulating charge thereof and discharge thereof into the load
during said interruption in power of the source and safety means
responsive to a drop in voltage applied to the load from the
source below said predetermined level for preventing continuation
of said discharge of the power storage means into the load during
said interruption in power of the source.
The sole reference relied on by the examiner is:
Konopka 4,709,320 Nov. 24, 1987
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