Color cathode ray tube with improved faceplate-funnel referencin

Details Color cathode ray tube with improved faceplate-funnel referencin Color cathode ray tube with improved faceplate-funnel referencin

1974-04-22

1976-07-27

Lowland, George E.

Receptacles

Envelope for electric lamp or similar device

Tv tube

313406, 313482, H01J 502, H01J 2907

Patent

active

039714900

ABSTRACT:
This disclosure depicts a novel rectangular-type color cathode ray tube and a method of manufacturing such a tube which insures that a phosphor screen pattern deposited on the screen area of the tube faceplate is accurately referenced to the source of electron beams for the tube. The faceplate and the tube funnel have referencing means which define faceplate and funnel reference surfaces of such number and arrangement that the faceplate and the funnel are interlocked to prevent beyond-tolerance relative movement therebetween. In a preferred structure disclosed, the faceplate has internal referencing means in three corners. The funnel has in each of three corresponding corners a pair of spaced, inside funnel reference surfaces oriented to capture the associated faceplate referencing means.

REFERENCES:
patent: 2324972 (1943-07-01), Wright
patent: 2514878 (1950-07-01), Kuperus
patent: 2755405 (1956-07-01), Wilhelm
patent: 2761990 (1956-09-01), Amoursky et al.
patent: 2916644 (1959-12-01), Kautz et al.
patent: 2942129 (1960-06-01), May
patent: 3038096 (1962-06-01), Knochel et al.
patent: 3361548 (1968-01-01), Hamilton et al.
patent: 3369881 (1968-02-01), Bennett et al.
patent: 3404302 (1968-10-01), Nicklas
patent: 3497746 (1970-02-01), Ouistermatt et al
patent: 3548235 (1970-12-01), Driedijk et al.
patent: 3735179 (1973-05-01), Kaplan

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