Appeal No. 1997-3995
Application No. 07/952,303
DECISION ON APPEAL
This is a decision on the appeal under 35 U.S.C. § 134
from the examiner’s rejection of claims 1-9, 17-20, 28, 29 and
33-43 , which constitute all the claims remaining in the1
application.
The disclosed invention pertains to a self-oscillating
inverter ballast for supplying power to a load such as a
fluorescent lamp.
Representative claim 1 is reproduced as follows:
1. An inverter powered from a constant-magnitude DC
voltage by way of a first sub-assembly and providing, between
a first and a second output terminal, an alternating output
voltage having a periodic and substantially sinusoidal
waveshape, said waveshape having a cyclical period, said first
sub-assembly being operative to cause any current flowing from
the DC voltage supply to the inverter to remain substantially
constant during the time-length of said cyclical period, said
inverter comprising:
a first and a second pair of series-connected
switching transistors, each transistor having a control input
Appellant’s claims 30-40 added by amendment on August 29, 1995 were respectively1
renumbered by the examiner as claims 33-43 pursuant to 37 CFR § 1.126.
2
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