Magnetron cathode structure

Details Magnetron cathode structure Magnetron cathode structure

1987-02-19

1989-08-29

Griffin, Robert L.

Electric lamp and discharge devices

Electrode and shield structures

Filament or resistance heated electrodes

313257, 313340, H01J 115

Patent

active

048620319

ABSTRACT:
A cathode structure of a magnetron which is used for microwave ovens, industrial microwave heating, and medical purposes is disclosed. One of two leads of the cathode structure of the magnetron, that is, one of a center lead and a side lead is tightly fitted into the spacer, and a metal fixing material is poured into the fitting portion and is fixed thereto. A hole of the spacer for inserting the other of the two leads has looseness with respect to the other of the two leads. The friction between the other of the two leads and the spacer is reduced, and even when the leads are made thin, the strength of the cathode structure is not reduced, and the production of extraneous sounds can be suppressed.

REFERENCES:
patent: 3979187 (1976-09-01), Scherer
patent: 4558250 (1985-12-01), Tsuzurabara
patent: 4684845 (1987-08-01), Tsuzurahara et al.

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