Electron tube with support for pyrolytic graphite electrode

Details Electron tube with support for pyrolytic graphite electrode Electron tube with support for pyrolytic graphite electrode

1986-01-06

1988-04-19

Boudreau, Leo H.

Electric lamp and discharge devices

Electrode and shield structures

Foraminous electrodes or shields

313341, 313343, 313349, 313356, H01J 146, H01J 194

Patent

active

047392134

ABSTRACT:
In an electron tube comprising a pyrolytic graphite electrode which is a hollow body of revolution and which has an open end at which it is secured to a substantially coaxially cylindrical electrode support, a substantially cylindrical sleeve of a carbide-forming metal is interposed radially between the end of the pyrolytic graphite electrode and the electrode support. One end of the sleeve is fused around the end of the electrode and the other end is secured to the grid support. Thus, the pyrolytic graphite electrode is secured in an uncomplicated and efficient way with a satisfactory dielectric strength and without affecting the electric field of the tube in operation.

REFERENCES:
patent: 3800378 (1974-04-01), Lee et al.
patent: 3943398 (1976-03-01), Gerlach
patent: 4119880 (1978-10-01), Wilcox et al.
patent: 4229674 (1980-10-01), Hoet

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