Electron gun assembly for cathode ray tubes and method of assemb

Details Electron gun assembly for cathode ray tubes and method of assemb Electron gun assembly for cathode ray tubes and method of assemb

1978-08-31

1981-03-31

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

29 2515, 313147, 313341, 313457, 313459, H01J 918, H01J 2904, H01J 2950

Patent

active

042596106

ABSTRACT:
An electron gun asembly comprising direct heated cathodes each having an electron emitting member fixed on a filament which is stretched between a pair of support means disposed face to face with each other on a substrate and a plurality of grid electrodes containing first grids, said cathodes and grid electrodes being secured with predetermined distance with one another by insulative support rods. Each of the cathodes has a means adjusting the spacing between the first grid electrode and the electron emitting member.

REFERENCES:
patent: 2391780 (1945-12-01), Hillier
patent: 2418317 (1947-04-01), Runge
patent: 2506660 (1950-05-01), Blattmann et al.
patent: 3213318 (1965-10-01), Glenn, Jr.
patent: 3441767 (1969-04-01), Kerstetter
patent: 3444416 (1969-05-01), Yoshida et al.
patent: 3541382 (1970-11-01), Takanashi et al.
patent: 3643299 (1972-02-01), Brown

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