Method of making precision shaped apertures in glass

Details Method of making precision shaped apertures in glass Method of making precision shaped apertures in glass

1987-08-07

1988-06-14

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 23, 65268, 428397, C03B 37022

Patent

active

047509260

ABSTRACT:
Method of producing precision shaped apertures in glass is shown. A hollow glass member defining a longitudinal aperture is provided. A carbon graphite member is shaped externally to a desired shape, disposed within the longitudinal aperture in the glass member, which member is thereafter collapsed about the graphite member taking its shape and size. The graphite member is removed leaving the glass member with a precision aperture therein.

REFERENCES:
patent: 3457054 (1969-07-01), Pel
patent: 3826560 (1974-07-01), Schultz
patent: 4283213 (1981-08-01), Akers et al.
patent: 4505729 (1985-03-01), Matsumura et al.
patent: 4518407 (1985-05-01), Black et al.
patent: 4636235 (1987-01-01), Glessner et al.
patent: 4698084 (1987-10-01), Severijns et al.

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