Electric furnace extension method and extension apparatus for optical fiber glass preform

1. Field of the Invention An electric furnace extending method and apparatus for an optical fiber glass body alignment when connecting the extension use body and pulling member and making it possible to immediately start the extension after the fusing of the connection portion. A centering mechanism...

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Main Authors Wada, Tetsuro, Kuwabara, Masahide, Komura, Yukio
Format Patent
LanguageEnglish
Published 04.05.2004
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Abstract 1. Field of the Invention An electric furnace extending method and apparatus for an optical fiber glass body alignment when connecting the extension use body and pulling member and making it possible to immediately start the extension after the fusing of the connection portion. A centering mechanism for centering the free end portion of the body and member on the furnace center side is provided between the furnace pipe of the electric furnace and grips of the extension use glass body and between the furnace pipe and the pulling member. The free end portion is centered by this centering mechanism, then the gripped sides of the body and member are fixed, the front ends of the two free end portions are abutted and fused and bonded at the highest temperature portion inside the electric furnace, then the highest temperature portion is moved to the extension portion of the glass body side and the extending of the glass body is commenced.
AbstractList 1. Field of the Invention An electric furnace extending method and apparatus for an optical fiber glass body alignment when connecting the extension use body and pulling member and making it possible to immediately start the extension after the fusing of the connection portion. A centering mechanism for centering the free end portion of the body and member on the furnace center side is provided between the furnace pipe of the electric furnace and grips of the extension use glass body and between the furnace pipe and the pulling member. The free end portion is centered by this centering mechanism, then the gripped sides of the body and member are fixed, the front ends of the two free end portions are abutted and fused and bonded at the highest temperature portion inside the electric furnace, then the highest temperature portion is moved to the extension portion of the glass body side and the extending of the glass body is commenced.
Author Kuwabara, Masahide
Wada, Tetsuro
Komura, Yukio
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References LeNoane (4407667) 19831000
Hamilton (3249414) 19660500
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Suzuki (5030265) 19910700
Clark (4631079) 19861200
Itoh (5013345) 19910500
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Snippet 1. Field of the Invention An electric furnace extending method and apparatus for an optical fiber glass body alignment when connecting the extension use body...
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Title Electric furnace extension method and extension apparatus for optical fiber glass preform
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