[특허]Impregnated vitreous (glassy) carbon graphite liner and heating element for a fiber optic draw furnace

Impregnated vitreous (glassy) carbon graphite liner and heating element for a fiber optic draw furnace 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C03B-013/16
출원번호	US-0047865 (1998-03-25)
발명자 / 주소	Uhm Daniel D. Spencer Robert A.
출원인 / 주소	Alcatel, FRX
대리인 / 주소	Ware, Fressola, Van der Sluys & Adolphson LLP
인용정보	피인용 횟수 : 1 인용 특허 : 34

초록 ▼

The present invention provides an improvement to a fiber optic draw furnace for drawing an optical fiber from a preform. The fiber optic draw furnace has a heating element having a shape for enclosing and heating the preform, and has a graphite liner having a corresponding shape to the shape of the heating element for providing a barrier between the heating element and the preform. In the fiber optic draw furnace, either the graphite liner is a high density extruded graphite liner that is impregnated with vitreous carbon completely through its entire graphite liner matrix, or the heating element is a high density extruded graphite heating element that is impregnated with vitreous carbon completely through its entire graphite heating element matrix, or both.

대표청구항 ▼

[ We claim:] [1.] A fiber optic draw furnace (10) for drawing an optical fiber (F) from a preform (P), having a heating element (22) having a shape for enclosing and heating the preform (P), and having a graphite liner (12) having a corresponding shape to the shape of the heating element (22) for providing a barrier between the heating element (22) and the preform (P),wherein either the graphite liner (12) is a high density extruded graphite liner (12) that is impregnated with vitreous carbon completely through its entire graphite liner matrix, or the heating element (22) is a high density extruded graphite heating element (22) that is impregnated with vitreous carbon completely through its entire graphite heating element matrix, or both; andwherein the fiber optic draw furnace (10) further comprises:an outer furnace shell (20);a bottom insulation plate (24) having a titanium carbide coating and being arranged in the outer furnace shell (20);a rigid bottom insulation ring (14) made of rigidified high purity graphite felt having a reflective coating (14a) and being arranged between the bottom insulation plate (24) and the outer furnace shell (20);an inner cylinder plate (26) having a titanium carbide coating and being arranged around the heating element (22) and resting on the bottom insulation plate (24);a rigid insulation insert (16) made of rigidified high purity graphite felt having a reflective coating (16a) being arranged around the inner cylinder (26) and resting on the bottom insulation plate (24); anda rigid insulation canister (18) made of rigidified high purity graphite felt having a reflective coating (18a) and being arranged between the rigid insulation insert (16) and the outer furnace shell (20).

이 특허에 인용된 특허 (34)

Bailey ; Alan C., Apparatus for minimizing drawn filament diameter variation.
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Stewart Wilford S. (Plainfield NJ), Carbon articles.
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Lewis Irwin Charles (Strongsville OH) Howard Ronald Albert (Brook Park OH), Carbon－carbon composites containing poorly graphitizing pitch as a binder and/or impregnant.
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Howard Ronald A. (Brook Park OH), Composites of flexible graphite particles and amorphous carbon.
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Briere Alfred D. (Worcester MA), Graphite element for use in a furnace for drawing optical fiber.
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Lane Kenneth R. (Wilmington NC) Prusha Donald L. (Painted Post NY) Siebold William E. (Horseheads NY), Heating oven for preparing optical waveguide fibers.
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Yoshimura Ichiro (Yokohama JPX), High temperature furnace with thermal insulation.
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Fleming ; Jr. James W. (Westfield NJ), Iridium fiber draw induction furnace.
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Harding Ian D. (Saffron Walden GB3) Ince Peter R. (Brentwood GB3) Preston Roger S. (Upminster GB3), Method and apparatus for contaminant removal in manufacturing optical fibre.
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Harvey Jill A. (Wilmington NC) Hawtof Daniel W. (Wilmington NC) Spicer Henry A. (Wrightsville Beach NC), Method and apparatus for drawing optical fibers.
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Lysson Hans-Jurgen (Korschenbroich DEX) Lisse Frank (Koln DEX) Hahn Manuela (Monchen-Gladbach DEX) Leppert Hans-Detlef (Monchengladbach DEX) Darbon Philippe (Saint Michel sur Orge FRX), Method and device for manufacturing an optical fiber.
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Nagayama Katsuya (Kanagawa JPX) Kobayashi Kohei (Kanagawa JPX) Ohta Hiroaki (Kanagawa JPX) Tsuchiya Ichiro (Kanagawa JPX), Method and furnace for drawing optical fibers.
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Wallouch ; Rudolph W., Method for increasing the strength and density of carbonaceous products.
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Nozawa Mitsuru (Nagoya JPX) Nomura Makio (Bisai JPX) Takaba Akihiko (Nagoya JPX) Hayashi Masato (Minokamo JPX), Method for manufacturing a glass container having a large impact strength using permanent and non permanent coatings on.
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Klop Marius A. F. (Eindhoven NLX) Meerman Wilhelmus C. P. M. (Eindhoven NLX) Peelen Jan G. J. (Eindhoven NLX) Tuin Hermanus N. (Eindhoven NLX), Method of and apparatus for manufacturing optical fibres.
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Van Der Giessen Aart A. (Eindhoven NLX) Van Der Hulst Victor A. (Eindhoven NLX) Janssen Petrus J. (Eindhoven NLX), Method of and device for drawing an optical fiber from a solid preform consisting substantially of SiO₂ an.
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Bailey Alan C. (Horseheads NY), Method of drawing glass optical waveguides.
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Miller Thomas J. (Alpharetta GA), Method of making fiber optical preform with pyrolytic coated mandrel.
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Krohn David A. (Hamden CT), Method of manufacture of optical fiber.
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Baniel Pascal (Ris-Orangis FRX), Method of manufacturing a cylindrical part from glass, especially from fluorinated glass by maintaining a thin gaseous f.
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Kyutoku Hirofumi (Ikoma JPX) Yamamoto Kouichi (Amagasaki JPX) Otani Yoshihisa (Himeji JPX), Method of manufacturing a high bulk density carbon fiber felt.
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Krohn David A. (Hamden CT), Method of manufacturing graded index optical fibers.
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Newbould Richard T. (Harlow GBX) Piggs Susan J. (Bishops Stortford GB2) Wilson Stephen J. (Duxford GBX), Method of manufacturing optical fibers.
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Ohga Yuichi (Yokohama JPX) Ishikawa Shinji (Yokohama JPX) Kanamori Hiroo (Yokohama JPX) Tsuchiya Ichiro (Yokohama JPX) Yokota Hiroshi (Yokohama JPX), Method of producing glass preform in furnace for heating glass.
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Stiller Alfred H. ; Zondlo John W. ; Stansberry Peter G., Method of producing high quality, high purity, isotropic graphite from coal.
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Briere Alfred D. (Dudley MA), Methods for prolonging the useful life of a graphite element in an optical fiber-drawing furnace.
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Paek Un C. (West Windsor Township ; Mercer County NJ) Schroeder ; Jr. Charles M. (North Hanover Township ; Burlington County NJ), Modified zirconia induction furnace.
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Kodama Fumio (Chofu JPX) Ohyama Noboru (Iwaki JPX), Multilayer insulating material and process for production thereof.
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Gouronnec Alain (Krec\h Lia Beg Leguer ; Servel 22300 Lannion FRX) Regreny Andre (Parc ar Croas 17 ; rue Albert Camus 22700 Perros Guirec FRX) Treheux Michel (An Tri Breud ; rue des Iles L\Ile Grande, Multiple fiber forming machine.
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Partus Fred P. (Atlanta GA), Non-contacting seal for treating chamber through which elongated material is moved.
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Rokujo Masaharu (Kanagawa JPX) Yokota Hisaaki (Chigasaki JPX) Saura Eiji (Kanagawa JPX) Nikaido Mitsunobu (Motomachi JPX) Sugino Morihiko (Kobe JPX), Non-permeable carbonaceous formed bodies and method for producing same.
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Ohga, Yuichi; Ishikawa, Shinji; Kanamori, Hiroo; Yoshimura, Ichiro; Yokota, Horoshi, Process of drawing optical fiber.
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Korb Louis L. (Sheboygan WI) Waitkus Phillip A. (Sheboygan WI), Vitreous carbon.
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Korb, Louis L.; Waitkus, Phillip A., Vitreous carbon and process for preparation thereof.
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이 특허를 인용한 특허 (1)

Berndt, Jurgen; Hoffart, Michael; Nowack, Norbert, Optical fiber draw furnace having a SiC or Silicon Nitride tube.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Impregnated vitreous (glassy) carbon graphite liner and heating element for a fiber optic draw furnace 원문보기

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Impregnated vitreous (glassy) carbon graphite liner and heating element for a fiber optic draw furnace 원문보기

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이 특허에 인용된 특허 (34)

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