Method for establishing uniform cathode-to-grid spacing in an el

Details Method for establishing uniform cathode-to-grid spacing in an el Method for establishing uniform cathode-to-grid spacing in an el

1978-12-13

1979-12-04

McQuade, John

Metal working

Barrier layer or semiconductor device making

Barrier layer device making

29 2515, H01J 918

Patent

active

041764323

ABSTRACT:
Uniform cathode-to-grid spacing in an electron gun including a plurality of cathodes is provided by first, inserting a metal strip and a confronting plastic strip on the cathode side of a grid. The sum of the thicknesses of the two strips is the desired cathode-to-grid spacing. Next, the cathodes are moved until the cathodes press against one of the strips. The cathodes now are affixed relative to the grid. Thereafter, one of the strips not in contact with the cathodes is withdrawn. Finally, the other strip is withdrawn.

REFERENCES:
patent: 3130474 (1964-04-01), Fiore
patent: 3340035 (1967-09-01), Hajduk
patent: 3434819 (1969-03-01), Merchant et al.
patent: 3533147 (1970-10-01), Baur et al.
patent: 3643121 (1972-02-01), Sawagata et al.
patent: 3667224 (1972-06-01), Tsuneta et al.
patent: 3848301 (1974-11-01), Gruber
patent: 4015315 (1977-04-01), Stone

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