Method of sealing vacuum bottle evacuation chambers

Details Method of sealing vacuum bottle evacuation chambers Method of sealing vacuum bottle evacuation chambers

1982-09-29

1984-09-11

Albritton, C. L.

Electric heating

Metal heating

By arc

53 86, 219121EG, 219121EM, B23K 1500

Patent

active

044712065

ABSTRACT:
A method of evacuating and sealing the vacuum chamber of a stainless steel vacuum bottle includes the steps of piercing the outer bottle with only very small openings into the vacuum chamber and closing the openings by means of an electron-beam welder after the bottle is heated and the vacuum chamber evacuated.

REFERENCES:
patent: 3423817 (1969-01-01), Bobo
patent: 3835618 (1974-09-01), Perdue
patent: 3926306 (1975-12-01), Van Nederveen
patent: 4251252 (1981-02-01), Frazier

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