Getter spring assembly for a color cathode-ray tube

Details Getter spring assembly for a color cathode-ray tube Getter spring assembly for a color cathode-ray tube

1994-11-22

1996-07-30

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313559, H01J 1970

Patent

active

055414745

ABSTRACT:
The present invention relates to a color CRT 10 having an evacuated envelope 11 includes a funnel 15 sealed at one end to a faceplate panel 12. A luminescent screen 22 is provided on an interior surface of the panel. A color selection electrode assembly 27 is disposed within the envelope in proximity to the screen. An internal magnetic shield 30, having an exterior surface 32, is secured to the color selection electrode assembly and is spaced from and extends along at least a portion of the funnel. A getter spring assembly 33 is disposed within the envelope to deposit a film of getter spring material onto the exterior surface 32 of the magnetic shield 30. The getter assembly 33 is improved by being detachably attached to the color selection electrode assembly 27 and prevented from rotating by an orientation plate 60 having a projection 70 with a flat contact surface that bears against the color selection electrode assembly.

REFERENCES:
patent: 3792300 (1974-02-01), Benda et al.
patent: 3979633 (1976-09-01), Davis et al.
patent: 4134041 (1979-01-01), della Porta et al.
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patent: 4221991 (1980-09-01), Speigel
patent: 4225805 (1980-09-01), Smithgall et al.
patent: 4230966 (1980-10-01), Compen
patent: 4342662 (1982-08-01), Kimura et al.
patent: 5397958 (1995-03-01), Na

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