Making a cathode ray tube having a conductive coating on the inn

Details Making a cathode ray tube having a conductive coating on the inn Making a cathode ray tube having a conductive coating on the inn

1976-08-24

1979-04-24

Smith, John D.

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

118 56, 427105, 427106, 427230, 427273, 427235, 427335, 427352, 427353, 427355, 427372R, 427271, H01J 2988, B05D 512

Patent

active

041513126

ABSTRACT:
In a method of manufacturing a cathode ray tube an electrically conductive coating is provided on an inner surface of the tube. The boundary of said conductive coating in the neck of the tube is sharply defined by wetting the part of the surface of the tube not to be covered with a liquid to remove the conductive material from that part of the surface up to the boundary, and then rinsing the wetted surface to remove any remainder of the conductive material.

REFERENCES:
patent: 2692209 (1954-10-01), Binder
patent: 2695593 (1954-11-01), Sullami
patent: 2987415 (1961-06-01), Taggett
patent: 3759735 (1973-09-01), Pekosh
patent: 3868264 (1975-02-01), Kellberg

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