Cylindrical cathode with segmented electron emissive surface and

Details Cylindrical cathode with segmented electron emissive surface and Cylindrical cathode with segmented electron emissive surface and

1980-07-21

1982-11-16

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

Discharging devices with apertured electrode interposed...

Plural cathodes

29 2517, 313304, 313338, 313348, H01J 146, H01J 2110

Patent

active

043596665

ABSTRACT:
A new method of fabricating a cylindrical segmented cathode by bending a photoetched bar-band to form a cylindrically-shaped cage and slipping it over a cylindrical electron emissive surface which will tightly fit inside the cage when the cathode is raised to its normal temperature. The bars of the band provide nonemissive segments of the cathode surface.

REFERENCES:
patent: 3186884 (1965-06-01), Haan et al.
patent: 3585438 (1971-06-01), Bell
patent: 3814972 (1974-06-01), Sain
patent: 3818260 (1974-06-01), Elfe, Jr. et al.
patent: 3967150 (1976-06-01), Lien et al.
patent: 4058432 (1977-11-01), Woldan et al.
patent: 4223243 (1980-09-01), Oliver et al.
patent: 4254357 (1981-03-01), Haas et al.
patent: 4302702 (1981-11-01), Montgaillard et al.

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