Cathode structure for an electron tube

Details Cathode structure for an electron tube Cathode structure for an electron tube

1991-08-30

1992-11-17

Yusko, Donald J.

Electric lamp and discharge devices

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

For indirectly heated cathode

313337, 313346R, 313446, H01J 1942

Patent

active

051646315

ABSTRACT:
The present invention involves a cathode structure for an electron tube wherein the cathode sleeve and cathode sleeve holder are fixed together by improved means so as to increase the exposed length of the cathode sleeve that has a cathode heater, a cathode holder for holding the cathode heater, a cathode sleeve with an upper end and lower end for enclosing the cathode heater, the upper end sealed by a cathode cap, a cathode sleeve holder with an upper end and lower end for holding the lower end of the cathode sleeve and the cathode holder, an outward flange formed around the lower end of the cathode sleeve, and an inward flange from around the upper end of the cathode sleeve holder, wherein in the outward flange of the cathode sleeve is caught by and bonded to the inner flange of the cathode sleeve holder.

REFERENCES:
patent: 2146365 (1939-02-01), Batchelor
patent: 4588254 (1985-12-01), Opresko

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