Cathode ray tube with transversely supported electrode and condu

Details Cathode ray tube with transversely supported electrode and condu Cathode ray tube with transversely supported electrode and condu

1979-07-11

1981-06-30

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313283, 313390, 313482, H01J 2902, H01J 2988

Patent

active

042764947

ABSTRACT:
In a cathode-ray tube, in particular a camera tube, the inner wall of the glass envelope is coated with an electrically conductive material interrupted in the proximity of electrodes extending transversely to the wall coating and supported by transversely extending supporting surfaces. At the area of each of the interruptions the envelope has a stepwise decrease of the inside diameter in two steps. In the direction of decreasing diameter the first of these steps constitutes the supporting surface for the transverse electrode and the interruption in the wall coating is provided on a wall portion of the second of these steps. The interruptions provided in this manner do not exert any disturbing influence on the electron beam in the tube.

REFERENCES:
patent: 2828433 (1958-03-01), Frenkel
patent: 2938134 (1960-05-01), Levin
patent: 2946910 (1960-07-01), Spinnler et al.
patent: 3188506 (1965-06-01), Rome
patent: 3912851 (1975-10-01), Vrijssen et al.
patent: 4182973 (1980-01-01), Vrijssen et al.

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