Apparatus for removing a cullet of a cathode-ray tube

Details Apparatus for removing a cullet of a cathode-ray tube Apparatus for removing a cullet of a cathode-ray tube

1986-06-30

1988-02-09

Bashore, S. Leon

Glass manufacturing

Electronic envelope header, terminal, or stem making means

65155, 65178, 445 69, C03B 2307, C03B 23207, C03B 518, H04B 100

Patent

active

047239794

ABSTRACT:
A method and apparatus for heat sealing an electron gun mount, having a glass stem, into a neck of a cathode-ray tube includes a mount socket for supporting the mount within the neck and a plurality of burners for applying heat to the outside of the neck proximate the stem. The neck softens, thins and then seals to the stem, causing excess neck material that is lower than the stem, known as cullet, to be cut off. Prior to applying heat, a sleeve is disposed around the mount socket within the neck adjacent to the cullet, with a clearance between the sleeve and both the socket and the neck. A vibrating coil is attached to the sleeve for vibrating the sleeve while applying heat to the outside of the neck.

REFERENCES:
patent: 2984941 (1961-05-01), Wynne et al.
patent: 4165227 (1979-08-01), Nubani et al.
patent: 4574008 (1986-03-01), Kobayashi
patent: 4589902 (1986-05-01), Colacello et al.

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