Getter assembly with stiffened getter wand and CRT

Details Getter assembly with stiffened getter wand and CRT Getter assembly with stiffened getter wand and CRT

1996-06-19

1998-11-24

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313558, H01J 2994

Patent

active

058412280

ABSTRACT:
A cathode ray tube (CRT) has a getter attachment wand with a trough-shape along a substantial portion of its length, imparting an increased stiffness to the wand to maintain the wand in close proximity to the inside surface of the CRT envelope, thereby avoiding clipping of the electron beam on its way to the screen. An optimal curvature of the wand strikes a balance between the desired stiffness and the ease with which the wand can be resistance welded to the top cup of the electron gun assembly.

REFERENCES:
patent: 3996488 (1976-12-01), Zucchinelli
patent: 4006381 (1977-02-01), Thall
patent: 4486686 (1984-12-01), della Porta

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