Appeal No. 97-2820
Application No. 08/432,443
DECISION ON APPEAL
This is an appeal from the final rejection of claims 3, 4, 6
and 7.
The disclosed invention relates to an inline electron gun.
The main focus lens of the inline electron gun is formed by two
electrodes that face each other. Each of the main focus
electrodes is in turn formed from two different parts. One of
the two parts is positioned within the other one of the two
parts.
Claim 7 is the only independent claim on appeal, and it
reads as follows:
7. In an inline electron gun, including a plurality of
electrodes spaced from three cathodes, said electrodes forming at
least a beam forming region and a main focus lens in the paths of
three electron beams, a center beam and two side beams, and said
main focus lens being formed by the facing portions of two of
said electrodes, the improvement comprising
said facing portions of the two main focus lens electrodes
each including a first part having a single aperture therein, and
a second part positioned within said first part, said second part
including three inline apertures therein, and
said first part including an apertured cup-shaped part with
four spaced ledges, and said second part being an apertured plate
with four corners, each corner including an offset, said
apertured plate being attached to said four ledges at the
offsets.
The references relied on by the examiner are:
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