Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Process of manufacturing optical fibers – waveguides – or...
Reexamination Certificate
2006-06-21
2010-12-07
Hoffmann, John (Department: 1791)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
Process of manufacturing optical fibers, waveguides, or...
C065S504000
Reexamination Certificate
active
07845195
ABSTRACT:
An optical fiber twisting apparatus that prevents line distortion in an optical fiber undergoing a drawing process and provides a consistent coating on a bare optical fiber. This optical fiber twisting apparatus includes a twist roller apparatus that having a twist roller that, by imparting a twist to an optical fiber, imparts a twist to a molten portion of an optical fiber preform positioned on an upstream side of the optical fiber, and a support portion that supports the twist roller. The accuracy of the outer circumference of the twist roller when the twist roller is forming a part of the twist roller apparatus is 15 μm or less.
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Engineering Tolerances, (pp. 1-4) From wikipedia.org website. Nov. 16, 2009.
Harada Koichi
Okada Kenji
Fujikura Ltd.
Hoffmann John
Sughrue & Mion, PLLC
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