Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – With measuring – controlling – sensing – programming – timing,...
Patent
1997-02-20
1999-02-09
Hoffmann, John
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
With measuring, controlling, sensing, programming, timing,...
65428, 65491, C03B 3707
Patent
active
058688153
ABSTRACT:
The specification describes a process and apparatus for monitoring and controlling the ellipticity of preform tubes during Modified Chemical Vapor Deposition. In response to computer generated signals from the monitoring device, the tube collapse rate is adjusted dynamically by locally changing the temperature of the glass tube, or by changing the physical force acting to collapse the tube.
REFERENCES:
patent: 5160520 (1992-11-01), Keim
patent: 5318612 (1994-06-01), Le Noane
DiGiovanni David John
Jacobs Steven Alan
Yan Man Fei
Hoffmann John
Lucent Technologies - Inc.
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