Dispenser cathode and method of manufacture therefor

Details Dispenser cathode and method of manufacture therefor Dispenser cathode and method of manufacture therefor

1988-02-10

1989-04-18

Moore, David K.

Electric lamp and discharge devices

Electrode and shield structures

Cathodes containing and/or coated with electron emissive...

313346R, 313352, H01J 904

Patent

active

048230448

ABSTRACT:
A four-piece, easily manufactured dispenser cathode capable of current densities up to and exceeding 10 Amperes per square centimeter is particularly adapted for CRT applications because of its surprisingly low cost. A refractory material reservoir contains a pellet of tungsten and barium calcium aluminate and is sealed by a pellet of porous tungsten or tungsten mixture. The reservoir/pellet assembly is contained in a support cylinder to which the porous tungsten pellet may be welded. The inventive process includes the steps to prepare the pellets and assemble the four elements of the cathode.

REFERENCES:
patent: 4310603 (1982-01-01), Falce
patent: 4400648 (1983-08-01), Taguchi et al.
patent: 4417173 (1983-11-01), Tuck et al.
patent: 4570099 (1986-02-01), Green
patent: 4671777 (1987-06-01), Van Esdonk
patent: 4737679 (1988-04-01), Yamamoto et al.

Affiliated with

Also associated with

Rating

Dispenser cathode and method of manufacture therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dispenser cathode and method of manufacture therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dispenser cathode and method of manufacture therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2398480