Stem-sealing method for assembling electron tubes including impr

Details Stem-sealing method for assembling electron tubes including impr Stem-sealing method for assembling electron tubes including impr

1978-03-15

1979-08-21

Kellogg, Arthur D.

Glass manufacturing

Processes

Fusion bonding of glass to a formed part

65 42, 65 59A, 65113, C03C 2700

Patent

active

041652274

ABSTRACT:
In a method for sealing a glass stem into the neck of an electron tube, the stem, which is supported on a mount pin, is positioned in the neck, which is longer than desired. The neck is then heat sealed, as by fusion, to the stem, and the excess glass or cullet is cut off, whereby the cullet falls on, around and sticks to the mount pin. The novel method includes releasing the cullet from the mount pin without substantially fracturing the cullet. Then, the released cullet is removed from the vicinity of the mount pin, again without substantially fracturing the cullet.

REFERENCES:
patent: 2391573 (1945-12-01), Herzog
patent: 2886336 (1959-05-01), Reynard
patent: 3034778 (1962-05-01), Shaffer et al.
patent: 3807006 (1974-04-01), Segro et al.

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