Appeal No. 1998-1288
Application No. 08/502,817
Representative claim 1 is reproduced as follows:
1. An arrangement comprising:
a source providing an alternating voltage across a
pair of source terminals; the alternating voltage having
a fundamental frequency distinctly higher than that of
the AC voltage on an ordinary electric utility power line;
a series-combination of an inductor and a capacitor;
the series-combination being: (i) naturally resonant at
a frequency lower than said fundamental frequency,
(ii) effectively connected across the source
terminals, thereby to draw a source current from the
source terminals, and (iii) connected in circuit with a pair
of output terminals across which is provided an
approximately sinusoidal output voltage; the inductor being
coupled with an auxiliary winding, thereby to cause an
auxiliary voltage to be provided from this auxiliary
winding; the coupling between the inductor and the
auxiliary winding being sufficiently loose so that, in case
an electrical short circuit were to be placed across the
auxiliary winding, the magnitude of the source current
would be prevented from increasing to a detrimentally high
level; and
a gas discharge lamp means having a first thermionic
cathode with a pair of cathode terminals connected with
the auxiliary winding by way of a connect means; the
lamp means also having a second thermionic cathode; the
approximately sinusoidal output voltage being applied
between the first and the second thermionic cathodes.
The examiner relies on the following references:
Warren 2,333,499 Nov. 02, 1943
Cates et al. (Cates) 2,339,051 Jan. 11, 1944
Cox 3,691,450 Sep. 12, 1972
Zansky 4,370,600 Jan. 25, 1983
2
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