Electric lamp or space discharge component or device manufacturi – Process – Electrode making
Patent
1995-05-25
1996-06-04
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Electrode making
H01J 914
Patent
active
055227503
ABSTRACT:
A cathode-ray tube having an electron gun which includes an electrode plate (E) in which a portion having three beam passage holes (H) and a portion having bead supports (S) are formed as a unitary structure, the two portions having different thicknesses (T.sub.1, T.sub.2), and the steps being inclinedly formed along the boundaries of the two portions. Since the portion having beam passage holes and the portion having bead supports are formed as a unitary structure easily and highly precisely in the electrode plate, the conventionally employed process of welding can be omitted, and thereby the productivity is raised and the manufacturing cost is decreased. Moreover, use of the material having the steps formed in advance contributes to increasing the productivity and preventing the machining tools from being damaged during the press-forming.
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patent: 4520292 (1985-05-01), van Hekken et al.
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patent: 4812706 (1989-03-01), Baudry et al.
patent: 4992698 (1991-02-01), Lundvall, II
patent: 5196762 (1993-03-01), Go
Endo Satoru
Mera Takeshi
Sugiyama Mitsuhiro
Hitachi , Ltd.
Ramsey Kenneth J.
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