Direct heating cathode structure for cathode ray tubes

Details Direct heating cathode structure for cathode ray tubes Direct heating cathode structure for cathode ray tubes

1991-11-27

1993-03-30

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313271, 313341, 313344, 313456, H01J 2904, H01J 118

Patent

active

051987201

ABSTRACT:
A direct heating cathode structure for a miniature cathode ray tube is disclosed wherein angular rod-shaped supports where the coiled heater is welded are bent so that one edge thereof is directed upward, and opposing delta welding portions are formed by chamfering the top edge of the bent front part of the supports, thereby allowing simple ascertainment of the proper welding location and rapid precision welding of the coiled heater.

REFERENCES:
patent: 3069584 (1962-12-01), Frazer
patent: 3092748 (1963-06-01), Dickson, Jr. et al.
patent: 4388551 (1983-06-01), Ray

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