Electron beam device with an electron gun having a tubular insul

Details Electron beam device with an electron gun having a tubular insul Electron beam device with an electron gun having a tubular insul

1988-03-16

1989-09-19

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313450, 313456, 313460, 313477R, 313482, H01J 2948, H01J 2990, H01J 2992

Patent

active

048684554

ABSTRACT:
An electron beam device such as a cathode ray tube having an electron gun (15) comprising a profiled tubular body (22) of a vitreous material. At least some of the electrodes (30, 32, 34, 36) of the electron gun comprising cup-shaped drawn metal members which are push fitted against respective engaging surfaces formed in the tubular body (22). Electrical connections to one or more of these cup-shaped members are point contacts made with lead-out wires (38, 40) held captive in the wall of the tubular body (22). In order to ensure a good point contact, at least the area of the wall in the vicinity of the terminal portion of the or each lead-out wire is flat. In consequence thereof a skirted portion of the or each cup-shaped electrode is flattened slightly against the surface of the wall.

REFERENCES:
patent: 2828433 (1958-03-01), Frenkel
patent: 4607190 (1986-08-01), Himmelbauer
patent: 4713879 (1987-12-01), Vrijssen

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