Device for drawing down an optical fiber preform

Details Device for drawing down an optical fiber preform Device for drawing down an optical fiber preform

1997-04-22

1999-08-03

Chin, Peter

Glass manufacturing

Fiber making apparatus

With furnace charging means

6537413, 6537415, 65483, 65486, 65503, 65533, 65534, 65537, C03B 300

Patent

active

059319844

ABSTRACT:
A device for drawing down an optical fiber preform (2) connected at one end to a feed rod (3) having an equal or smaller diameter. A chamber (11) in which the preform is drawn has an upper part (11A) with an opening (12). The opening engages the preform to seal the chamber. An enclosure (5) has a seal (6) at its upper part (5A) for sealing around the feed rod. A lower part (5B) of the enclosure contacts the upper part of the chamber to seal the chamber while the feed rod is passing through the opening.

REFERENCES:
patent: 2253089 (1941-08-01), Nydegger
patent: 3045278 (1962-07-01), Potter
patent: 4154592 (1979-05-01), Bailey
patent: 4572486 (1986-02-01), Groteke et al.
patent: 4673427 (1987-06-01), Van Der Giessen et al.
Patent Abstracts Of Japan, vol. 14, No. 390 (C-751) corresponding to JP-A-02 145452 (Furukawa Electric Co. Ltd.) Jun. 4, 1990.
Patent Abstracts Of Japan, vol. 15, No. 167 (C-827) corresponding to JP-A-03 037128 (Fujikura Ltd.) Feb. 18, 1991.

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