Method for forming electron gun electrodes

Details Method for forming electron gun electrodes Method for forming electron gun electrodes

1981-06-22

1984-01-24

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

72356, H01J 914

Patent

active

044273975

ABSTRACT:
An electron gun electrode of a color picture tube is manufactured by forming three spaced openings through a metal plate; squeezing the metal plate to form three inverted cup shaped cylindrical projections having the openings at their top centers; coining inner peripheries of the openings to enlarge the same and to form bevelled portions around the peripheries of the enlarged openings; and increasing inner diameters of the cylindrical projections thereby obtaining the electrode integrally formed with three adjacent cylindrical projections.

REFERENCES:
patent: 3412593 (1968-11-01), Price
patent: 3987329 (1976-10-01), Yoshida et al.

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