Wet carbon-dioxide treatment of partially-completed CRT

Details Wet carbon-dioxide treatment of partially-completed CRT Wet carbon-dioxide treatment of partially-completed CRT

1978-12-26

1980-07-22

McQuade, John

316 19, 316 21, H01J 9395

Patent

active

042136636

ABSTRACT:
In a method of making a virgin CRT (cathode-ray tube), soon after the panel and funnel are sealed together to form a bulb, the inside of the bulb is flushed with wet carbon-dioxide gas and then flushed with dry noncontaminating gas. Subsequently, the mount assembly is sealed into the funnel, and then the bulb is exhausted, sealed and gettered to produce the finished CRT.

REFERENCES:
patent: 3063777 (1962-11-01), Trax
patent: 3410723 (1968-11-01), Cohz
patent: 3589791 (1971-06-01), Kanellopoulos
patent: 3658401 (1972-04-01), Files
patent: 3932011 (1976-01-01), Piascinski
patent: 4048545 (1977-09-01), Madden

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