System for producing an optical fiber preform with gas volume co

Details System for producing an optical fiber preform with gas volume co System for producing an optical fiber preform with gas volume co

1981-12-11

1983-12-20

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, 65 29, 65 301, 65157, 65160, C03B 1900, C03B 3707, C03C 2300

Patent

active

044215401

ABSTRACT:
A process for producing an optical fiber preform in a muffle furnace by hydrolyzing a gaseous glass forming material with a flame from an oxyhydrogen burner and depositing the resulting soot in a rod shape and an apparatus therefor are described, wherein a gas is supplied to the muffle furnace other than from said burner, and the volume supply of said gas is held constant by controlling the amount of a control gas supplied into an intermediate portion of an exhaust pipe through which the gases formed in the muffle furnace and the fine glass particles that do not deposit in a rod shape are discharged.

REFERENCES:
patent: 4278459 (1981-07-01), Partus
patent: 4280829 (1981-07-01), Sheth
patent: 4345928 (1982-08-01), Kawachi et al.

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