Method of producing itegral electrode structure for electron gun

Details Method of producing itegral electrode structure for electron gun Method of producing itegral electrode structure for electron gun

1982-09-29

1984-11-06

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

72335, H01J 914

Patent

active

044810032

ABSTRACT:
A method for producing an electrode structure for use in an electron gun, especially an in-line type electrode structure for use an electron gun of a color picture tube. The electrode structure dispenses with auxiliary electrodes by forming its three cylindrical members integrally by press work. After the pressing step, the inner edge of the bottom portion of each of the cylindrical members is beveled to provide a tapering surface having a desired circular cross section. By forming a circular groove in the bottom portion, opposite to the tapering surface, the formation of the tapering surface is made more exact.

REFERENCES:
patent: 2441790 (1948-05-01), Bolte et al.
patent: 3412593 (1968-11-01), Price

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