Appeal No. 96-0499
Application 07/891,671
transformer secondary winding is increased by increasing the number of turns
in the secondary winding while maintaining the filament voltage of the lamp
substantially constant. This arrangement is said to substantially eliminate
the peak current value and reduce the harmonic distortion in the operation of
the lamp.
Representative claim 13 is reproduced as follows:
13. In a low power consumption stabilizer of the type which includes a
primary winding, a secondary winding, a fluorescent lamp, and a rated lamp
current, the improvement which comprises:
an impedance means for reducing the current in the secondary winding;
wherein the peak current value is substantially eliminated, thereby
substantially reducing the harmonic distortion in the stabilizer;
wherein the filament voltage of the lamp is maintained substantially
constant, thereby maintaining substantially uniform brightness of the lamp;
and
wherein said secondary winding has turns, and said impedance means is an
increased number of turns in the secondary winding, said increased number
being in addition to the number of turns which provides the rated lamp
current.
The examiner relies on the following references:
Riesland et al. (Riesland) 4,185,233 Jan. 22, 1980
Munson 4,559,479 Dec. 17, 1985
Claims 13, 15-18, 21 and 23-27 stand rejected under 35 U.S.C. § 103.
As evidence of obviousness the examiner offers Riesland in view of Munson.
Rather than repeat the arguments of appellant or the examiner, we make
reference to the briefs and the answer for the respective details thereof.
OPINION
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