Method of supplying fluid to a rotating tube

Details Method of supplying fluid to a rotating tube Method of supplying fluid to a rotating tube

1981-03-11

1982-08-31

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 32, 427163, 427231, 427237, C03B 3707

Patent

active

043470696

ABSTRACT:
A method of introducing a vapor stream into a rotating optical fiber preform tube comprising the steps of: (a) generating a vapor stream comprised of a vaporized glass forming precursor entrained in an oxidizing carrier gas; (b) flowing the vapor stream into the rotating optical fiber preform tube through a sealed rotary joint; and (c) preventing any material alteration in the composition of the vapor stream from occurring should the sealed rotary joint become leaky by flowing a stream of fluid consisting essentially of the oxidizing carrier gas over the rotary joint at a pressure greater than the pressure of the vapor stream as it flows through the rotary joint.

REFERENCES:
patent: 1840127 (1932-01-01), Penney
patent: 3272516 (1966-09-01), Hoffman
patent: 4140505 (1979-02-01), Ramsay
patent: 4203743 (1980-05-01), Suganuma et al.
patent: 4317667 (1982-03-01), Spainhour

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