Method and apparatus for fabricating lightguide preforms

Details Method and apparatus for fabricating lightguide preforms Method and apparatus for fabricating lightguide preforms

1981-01-05

1982-03-02

Fisher, Richard V.

Glass manufacturing

Processes

Repairing or cleaning of apparatus; or batch dust prevention...

65 312, 65 182, 65 32, 65144, 65157, 65168, 118733, 427163, C03B 1906, C03B 3526, C03C 1700

Patent

active

043176674

ABSTRACT:
A lightguide starting tube or rod (12) passes through opposed lateral openings (51--51) in a chamber (31) which contains an oxy-hydrogen torch (14) used to deposit particulate glass on the rod. Frusto-conical, laminar flow, gas shields (71 and 72) are formed about the rod (12) on both sides of said openings (51--51) to permit the rod to pass therethrough in spaced relation to the openings while sealing said openings to prevent gas or undeposited particulate from passing therethrough and preventing contaminants from entering the chamber (31).

REFERENCES:
patent: 3266124 (1966-08-01), Lysak
patent: 3351451 (1967-11-01), Barradell-Smith et al.
patent: 3737292 (1973-06-01), Keck et al.
patent: 3775075 (1973-11-01), Keck et al.
patent: 4217027 (1980-08-01), MacChesney et al.

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