Electrode structure for electron gun

Details Electrode structure for electron gun Electrode structure for electron gun

1980-02-09

1985-04-09

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313409, H01J 2946

Patent

active

045104131

ABSTRACT:
An electrode structure for an electron gun, especially an in-line type electrode structure for an electron gun of a color picture tube. The electrode structure dispenses with auxiliary electrodes and its three cylindrical members are integrally formed by press work. After the pressing step, the inner edge of the bottom portion of each 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: 4063128 (1977-12-01), Hughes
patent: 4232246 (1980-11-01), Sakurai et al.

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