Cathode structure for magnetron

Details Cathode structure for magnetron Cathode structure for magnetron

1985-12-10

1988-03-22

Moore, David K.

Electric lamp and discharge devices

Electrode and shield structures

Filament or resistance heated electrodes

313344, 313558, 313559, 313560, 313561, 315 3951, 315 3969, 315 3957, 315 3967, H01J 2550

Patent

active

047331240

ABSTRACT:
A cathode structure for a magnetron representative of a self-oscillation type microwave electron tube comprises a pair of opposite end shields for supporting both ends of a filament helically wound in an axial direction, and a getter fixed on at least an upper end shield positioned on the side of a terminal from which a microwave oscillation output is produced. The upper end shield is concaved with respect to a lower end shield, and the getter provided on the upper end shield is also concaved so as to be closely fitted over substantially the entirety of an outer surface of the upper end shield. Preferably, the getter provided on the upper end shield has an upright annular wall of a central burring hole. Thus, the improved cathode structure is immune to deformation and suitable for cleaning and welding, thereby ensuring improved lifetime stability and high fabrication efficiency.

REFERENCES:
patent: 2001548 (1935-05-01), Romhild
patent: 3988636 (1976-10-01), Sato et al.
patent: 4132921 (1979-01-01), Hatayama et al.
patent: 4233540 (1980-11-01), Tashiro et al.

Affiliated with

Also associated with

Rating

Cathode structure for magnetron does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cathode structure for magnetron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cathode structure for magnetron will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-444010