Method for devacuating a vacuum tube

Details Method for devacuating a vacuum tube Method for devacuating a vacuum tube

1974-02-04

1977-03-08

Lake, Roy

H01J 950

Patent

active

040109917

ABSTRACT:
In a method for devacuating a vacuum tube to atmospheric pressure, a pulsed beam of radiant energy, such as a laser beam, is directed upon an area of the glass neck portion of the tube that is opposite and closely spaced from a surface structure of the mount assembly in the tube, so that volatilized material that is swept into the tube condenses on and sticks to the surface structure.

REFERENCES:
patent: 2859324 (1958-11-01), Belott et al.
patent: 3063777 (1962-11-01), Trax
Meyershofer, Machining with the Carbon Dioxide Laser, RCA Engineer 15, 1970, pp. 52-57.
RCA Technical Note, No. 384, Method of Piercing Glass Tubing, June 1960.

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