Screen contact means for a cathode ray tube

Details Screen contact means for a cathode ray tube Screen contact means for a cathode ray tube

1980-08-18

1982-08-10

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Screen

313477HC, 313479, H01J 2928, H01J 2988, H01J 2990

Patent

active

043440150

ABSTRACT:
A cathode ray tube comprises an envelope having a funnel portion with an electrical terminal extending through a wall surface thereof. A faceplate is sealed to the funnel portion and a screen contact assembly provides electrical contact between the electrical terminal and an aluminum coating on an inside surface of the faceplate. The screen contact assembly includes a conductive strip attached at one end to the electrical terminal. At the other end of the strip and attached thereto is a relatively flexible first contact member which is in pressured electrical contact with the aluminum layer on the faceplate. Disposed between the flexible first contact member and the aluminum layer on the faceplate is an oxidized, silver plated NICHROME foil member of high electrical conductivity. Transverse support and lateral stability is provided by a relatively flexible second contact member attached to and forming a part of the screen contact assembly.

REFERENCES:
patent: 3432803 (1969-03-01), Nice
patent: 3876898 (1975-04-01), Davis et al.
patent: 3876899 (1975-04-01), Davis et al.
patent: 3898510 (1975-08-01), Davis et al.
patent: 4182974 (1980-01-01), Van Ijzeren

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