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    • 8. 发明授权
    • Furnace for forming optical fiber
    • 用于形成光纤的炉
    • US06192715B1
    • 2001-02-27
    • US09245340
    • 1999-02-05
    • Nobuaki OritaTetsuya KumadaYoshiyuki SakataHisashi Koaizawa
    • Nobuaki OritaTetsuya KumadaYoshiyuki SakataHisashi Koaizawa
    • C03B3707
    • C03B37/029C03B2205/63C03B2205/81C03B2205/83Y02P40/57
    • An optical fiber drawing furnace capable of the prevention of entry of an ambient gas into an inner space thereof both effectively and economically, provided with a lower gas introduction portion through which inert gas is introduced into the inner space of the optical fiber drawing furnace, a chamber separated by a lower partition, and a bottom cover. The lower partition is arranged immediately below the lower gas introduction portion and has a first hole through which the chamber and the inner space are communicated. The bottom cover has a second hole through which the chamber and the atmosphere are communicated. An optical fiber is passed through the first and second holes. A controller detects a differential pressure between a pressure P1 in the inner space and a pressure P2 in the chamber and controls the suction flow by a pump for evacuating the gas in the chamber to maintain P1>P2. The sizes of the first and second holes are defined as (L1/D1)
    • 一种能够有效地和经济地防止环境气体进入其内部空间的光纤拉丝炉,其具有将惰性气体引入到光纤拉制炉的内部空间中的下部气体导入部, 室由下隔板分隔开,底盖。 下部分隔部布置在下部气体导入部的正下方,具有第一孔,室与内部空间连通。 底盖具有第二孔,室和大气通过该孔连通。 光纤通过第一和第二孔。 控制器检测内部空间中的压力P1和室内的压力P2之间的压差,并且通过用于排出腔室中的气体的泵来控制吸入流以保持P1> P2。 第一和第二孔的尺寸被定义为(L1 / D1)<(L2 / D2),其中L1和L2是孔的长度,D1和D2是孔的直径。
    • 10. 发明授权
    • Optical fiber coating apparatus and positioning method thereof
    • 光纤涂布装置及其定位方法
    • US5449408A
    • 1995-09-12
    • US90168
    • 1993-07-22
    • Hisashi KoaizawaYukio KomuraNobuaki Orita
    • Hisashi KoaizawaYukio KomuraNobuaki Orita
    • C03C25/12G02B6/44B05C3/15
    • C03C25/12G02B6/443G02B6/4486Y10S118/18
    • An optical fiber coating apparatus which has a left holder unit 13a and a right holder unit 13b, in the left holding space 12a and right holding space 12b defined in those units are housed a second layer die 16a, 16b, a first layer die 17a, 17b, and a nipple 18a, 18b in a superposed state. The second layer die 16a, 16b and the first layer die 17a, 17b and the nipple 18a, 18b have block shaped planar outer contour shapes and the holding space 12a, 12b housing these also has a block shaped planar outer contour shape. Since the outer shapes of the dies 16a, 16b and 17a, 17b and the nipple 18a, 18b and the holding space 12a, 12b are all block shaped, it is easy to perform the axial alignment of the holes 30, 31, and 32 through which the optical fiber passes by pressing the die 16a, 16b, the die 17a, 17b, and the nipple 18a, 18b against the reference surfaces 19, 21 of the left holding space 12a.
    • PCT No.PCT / JP92 / 01541 Sec。 371日期:1993年7月22日 102(e)日期1993年8月2日PCT 1992年11月25日PCT PCT。 公开号WO93 / 11081 日期:1993年6月10日。在这些单元中限定的左保持空间12a和右保持空间12b中具有左支架单元13a和右保持器单元13b的光纤涂覆装置容纳有第二层模具16a,16b ,叠置状态的第一层模具17a,17b和接头18a,18b。 第二层模具16a,16b和第一层模具17a,17b和接头18a,18b具有块状的平面外轮廓形状,并且容纳它们的保持空间12a,12b也具有块状的平面外轮廓形状。 由于模具16a,16b和17a,17b以及接头18a,18b和保持空间12a,12b的外形都是块形,所以容易进行孔30,31和32的轴向对准 光纤通过将模具16a,16b,模具17a,17b和接头18a,18b压靠在左侧保持空间12a的基准表面19,21上而通过。