Support structure for directly-heated cathode of cathode ray tub

Details Support structure for directly-heated cathode of cathode ray tub Support structure for directly-heated cathode of cathode ray tub

1978-10-10

1980-03-25

Smith, Alfred E.

Electric lamp and discharge devices

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

Supporting and/or spacing elements

313284, 313345, H01J 115

Patent

active

041952464

ABSTRACT:
There is disclosed a support structure for a directly-heated cathode in a cathode ray tube, for supporting the cathode by fastening the strip leads of the cathode to support rods piercing and rigidly fixed to a base of insulating material through resistance welding. The support rods are provided in their proper positions respectively with protrusions having top plane areas to be contacted with the surfaces of the strip leads and the cathode is supported by fastening the strip leads to the protrusions through resistance welding. The length of the top plane area of the protrusion extending in the direction along the width of the strip lead is 30 to 80% of the size of the width of the strip lead.

REFERENCES:
patent: 3814976 (1974-06-01), Mitobe et al.
patent: 3947715 (1976-03-01), Puhak
Japanese Preliminary Publication of Utility Application 52-28867; Published Feb. 24, 1977; 2 pp.
Japanese Preliminary Publication of Patent Application 50-148259; Published Nov. 27, 1975; 3 pp.

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