Cathode structure for an electron tube and method of constructin

Details Cathode structure for an electron tube and method of constructin Cathode structure for an electron tube and method of constructin

1991-09-12

1993-06-15

Yusko, Donald J.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For indirectly heated cathode

313337, 313446, 445 58, 445 36, H01J 1904

Patent

active

052202380

ABSTRACT:
A cathode structure for an electron tube that includes a cathode sleeve, an upper heat radiation part blackened by the oxidation of the Cr contained therein in order to increase the rate of the heat radiation, a lower supporting part covered by a nickel layer for preventing the oxidation of Cr, and a cathode sleeve holder that is connected to the lower supporting part by resistance welding.

REFERENCES:
patent: 3908183 (1975-09-01), Ennis, Jr.
patent: 4184100 (1980-01-01), Takanashi et al.

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