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    Optical fiber manufacturing apparatus and optical fiber manufacturing method
    1.
    发明授权
    Optical fiber manufacturing apparatus and optical fiber manufacturing method 有权
    光纤制造装置及光纤制造方法

    公开(公告)号：US08701445B2

    公开(公告)日：2014-04-22

    申请号：US12631676

    申请日：2009-12-04

    申请人： Tomohiro Nunome

    发明人： Tomohiro Nunome

    IPC分类号： C03B37/02

    CPC分类号： C03B37/029 ,  C03B2205/80

    摘要： An optical fiber manufacturing apparatus for manufacturing an optical fiber by drawing a optical fiber preform, including: a drawing furnace having therein a muffle tube into which the optical fiber preform is inserted and heating the optical fiber preform; and a first seal member which is disposed at an insert side of the drawing furnace so as to be coaxial with the drawing furnace and which seals the optical fiber preform inserted into an opening formed at the center thereof, wherein the first seal member includes a plurality of inner-circumference slits formed in the inner circumference thereof and a plurality of outer-circumference slits formed in the outer circumference thereof.

    摘要翻译： 一种用于通过拉制光纤预制件来制造光纤的光纤制造设备，包括：其中具有马弗管的拉丝炉，其中插入有光纤预制棒并加热光纤预制件; 以及第一密封构件，其设置在所述拉拔炉的插入侧，以与所述拉拔炉同轴并且密封插入形成在其中心的开口中的所述光纤预制件，其中所述第一密封构件包括多个 形成在其内周的内周狭缝和形成在其外周的多个外周狭缝。

    Method and induction furnace for drawing large diameter preforms to optical fibres
    2.
    发明授权
    Method and induction furnace for drawing large diameter preforms to optical fibres 有权
    用于将大直径预成型件拉伸到光纤的方法和感应炉

    公开(公告)号：US07814767B2

    公开(公告)日：2010-10-19

    申请号：US09986622

    申请日：2001-11-09

    申请人： Giacomo Stefano Roba ,  Massimo Nutini ,  Franco Veronelli

    发明人： Giacomo Stefano Roba ,  Massimo Nutini ,  Franco Veronelli

    IPC分类号： C03B37/023 ,  C03B37/07

    CPC分类号： H05B6/20 ,  C03B37/0124 ,  C03B37/029 ,  C03B2205/64 ,  C03B2205/70 ,  C03B2205/80 ,  C03B2205/81 ,  C03B2205/82 ,  C03B2205/92 ,  C03B2205/96 ,  C03B2205/98 ,  Y02P40/57

    摘要： An induction furnace capable of drawing large diameter preforms of up to 130 mm is described. The induction furnace has top and bottom chimneys surrounding the entire preform during operation of the furnace with an inert conditioning gas which is introduced into the top chimney and flows downward through the furnace body and bottom chimney without significant turbulence. A distributor ring inside the top chimney redirects flow from a circumferential direction to a downward direction. The top chimney also includes a resilient seal to releasably hold the top of the preform. The bottom chimney has a smoothly decreasing cross-sectional area preventing turbulence at the furnace exit. The furnace insulation is preferably a rigid self-supporting graphite cylinder. A method of drawing large diameter preforms either to an optical fiber or to a preform of smaller diameter using such a furnace is also described.

    摘要翻译： 描述了能够拉伸高达130mm的大直径预制件的感应炉。 感应炉在炉子运行期间具有围绕整个预制件的顶部和底部烟囱，其中惰性调节气体被引入到顶部烟囱中并且向下流过炉体和底部烟囱而没有显着的湍流。 顶部烟囱内的分配器环将流动从圆周方向重新定向到向下的方向。 顶部烟囱还包括弹性密封件以可释放地保持预制件的顶部。 底部烟囱具有平滑减小的横截面积，防止炉出口处的湍流。 炉绝缘体优选为刚性自支撑石墨圆筒。 还描述了使用这种炉将大直径预成型件拉到光纤或更小直径的预成型件的方法。

    Optical fiber drawing apparatus and sealing mechanism for the same
    3.
    发明授权
    Optical fiber drawing apparatus and sealing mechanism for the same 失效
    光纤拉丝装置和密封机构相同

    公开(公告)号：US07631519B2

    公开(公告)日：2009-12-15

    申请号：US11447967

    申请日：2006-06-07

    申请人： Mitsuhiro Shiono

    发明人： Mitsuhiro Shiono

    IPC分类号： C03B37/01 ,  C03B37/02 ,  C03B37/085

    CPC分类号： C03B37/029 ,  C03B2205/80 ,  C03B2205/82 ,  Y02P40/57

    摘要： An inner seal ring 16 is composed by connecting a plurality of inner seal ring pieces 16A, an outer seal ring 17 is composed by connecting a plurality of outer seal ring pieces 17A provided at an outer periphery of the inner seal ring 16, and a coil spring 18 is arranged at an outer periphery of the outer seal ring 17. The inner seal ring 16 and the outer seal ring 17 are piled for two or more stages, respectively. A connecting part of the inner seal ring pieces 16A and a connecting part of the outer seal ring pieces 17 are arranged not to overlap each other. An inner diameter of the inner seal ring 16 is variable in accordance with an outer diameter in vertical direction of a drawing-preform 1 by using a coil spring 18.

    摘要翻译： 内密封圈16通过连接多个内密封环件16A而构成，外密封环17通过连接设置在内密封环16的外周的多个外密封环片17A和线圈 弹簧18布置在外密封环17的外周。内密封环16和外密封环17分别堆叠两级或更多级。 内密封圈片16A和外密封圈片17的连接部分的连接部分彼此不重叠。 内密封环16的内径可以通过使用螺旋弹簧18根据拉伸成型体1的垂直方向的外径而变化。

    Methods of and apparatus for heating a preform from which lightguide fiber is drawn
    4.
    发明授权
    Methods of and apparatus for heating a preform from which lightguide fiber is drawn 失效
    用于加热从其中拉出光导纤维的预成型件的方法和设备

    公开(公告)号：US4383843A

    公开(公告)日：1983-05-17

    申请号：US302933

    申请日：1981-09-16

    申请人： Rama Iyengar

    发明人： Rama Iyengar

    IPC分类号： C03B37/027 ,  C03B37/029 ,  G02B6/00 ,  C03B37/025

    CPC分类号： C03B37/029 ,  C03B2205/68 ,  C03B2205/80 ,  C03B2205/82

    摘要： Apparatus for heating a vertically suspended preform from which lightguide fiber is drawn includes a torch having a plurality of ducts that open to a surface adjacent to a lower end of the preform. Fuel and oxidizing gases flow from the ducts, mix at the surface and flame about a necked-down, lower portion of the preform to form a melt cone from which the fiber is drawn. The ducts and the preform are positioned to cause a combustion zone of each flame to impinge upon the preform. In a preferred embodiment, the openings of the ducts are arrayed in a circle which is referred to as a pitch circle and which has a diameter that is less than that of the preform. Also, the ducts are arranged so that the gases are directed at a predetermined angle to the axis of the preform.

    摘要翻译： 用于加热从其中拉出光导纤维的垂直悬挂的预制件的装置包括具有多个通道的手电筒，所述多个导管对于与预成型件的下端相邻的表面开放。 燃料和氧化气体从管道流出，在表面和火焰周围围绕预制件的颈缩下部混合以形成熔融锥体，纤维从该锥体拉出。 导管和预成型件被定位成使得每个火焰的燃烧区域撞击预成型件。 在优选实施例中，管道的开口被排列成圆形，其被称为节圆，并且其直径小于预制件的直径。 而且，管道被布置成使得气体以预定角度指向预成型件的轴线。

    Method of drawing optical filaments
    6.
    发明授权
    Method of drawing optical filaments 失效
    拉丝光纤的方法

    公开(公告)号：US4154592A

    公开(公告)日：1979-05-15

    申请号：US879155

    申请日：1978-02-21

    申请人： Alan C. Bailey

    发明人： Alan C. Bailey

    IPC分类号： C03B37/027 ,  C03B37/029 ,  G02B6/00 ,  C03B37/00

    CPC分类号： C03B37/02736 ,  C03B37/027 ,  C03B37/029 ,  C03B2205/80

    摘要： A method of forming an article such as an optical waveguide filament by disposing a draw blank in a cylindrical muffle. The muffle is heated to a temperature sufficient to cause a first end of the blank to reach the drawing temperature of the material thereof. A filament is drawn from the first end of the blank while a helium-containing gas flows through the muffle in such a direction that it is exhausted from that end of the muffle from which the filament is being drawn.

    摘要翻译： 通过在圆筒形马弗炉中设置拉丝坯料来形成诸如光波导丝的物品的方法。 将马弗炉加热到足以使坯料的第一端达到其材料的拉伸温度的温度。 从坯料的第一端抽出细丝，同时含有氦气的气体沿着从其被拉丝的马弗管的端部排出的方向流过马弗管。

    FURNACE FOR FABRICATING A GLASS PREFORM OR AN OPTICAL FIBER
    9.
    发明申请
    FURNACE FOR FABRICATING A GLASS PREFORM OR AN OPTICAL FIBER 审中-公开
    用于制造玻璃预制件或光纤的炉

    公开(公告)号：US20090025431A1

    公开(公告)日：2009-01-29

    申请号：US12178133

    申请日：2008-07-23

    申请人： Tetsuya OTOSAKA

    发明人： Tetsuya OTOSAKA

    IPC分类号： C03B37/025

    CPC分类号： C03B37/029 ,  C03B2205/80 ,  Y02P40/57

    摘要： In a furnace for heating an optical fiber preform to be inserted from an insertion opening, the furnace includes an annular sealing body for sealing a clearance gap between the optical fiber preform and the insertion opening. The annular sealing body is formed from stacked annular disks respectively having an insertion hole in its center area. The annular disk has slits formed from a inner edge of the annular disk toward its periphery side and flexible portions that are defined by the slits and bend by an interference with the optical fiber preform to be inserted into the insertion hole. When the optical fiber preform is inserted into the insertion hole of the annular sealing body, the flexible portions bend.

    摘要翻译： 在用于加热从插入口插入的光纤预制件的炉子中，炉子包括用于密封光纤预制件和插入开口之间的间隙的环形密封体。 环形密封体由分别在其中心区域具有插入孔的堆叠环形盘形成。 环形盘具有从环形盘的内边缘朝向其周边形成的狭缝和由狭缝限定的柔性部分，并且通过与光纤预制件的干涉而弯曲以插入到插入孔中。 当光纤预制件插入到环形密封体的插入孔中时，柔性部分弯曲。

    Optical fiber drawing apparatus, sealing mechanism for the same, and method for drawing an optical fiber
    10.
    发明申请
    Optical fiber drawing apparatus, sealing mechanism for the same, and method for drawing an optical fiber 失效
    光纤拉制装置，密封机构及其制造方法

    公开(公告)号：US20060280578A1

    公开(公告)日：2006-12-14

    申请号：US11447967

    申请日：2006-06-07

    申请人： Mitsuhiro Shiono

    发明人： Mitsuhiro Shiono

    IPC分类号： F16B43/02 ,  C03B37/085 ,  C03B37/025

    CPC分类号： C03B37/029 ,  C03B2205/80 ,  C03B2205/82 ,  Y02P40/57

    摘要： An inner seal ring 16 is composed by connecting a plurality of inner seal ring pieces 16A, an outer seal ring 17 is composed by connecting a plurality of outer seal ring pieces 17A provided at an outer periphery of the inner seal ring 16, and a coil spring 18 is arranged at an outer periphery of the outer seal ring 17. The inner seal ring 16 and the outer seal ring 17 are piled for two or more stages, respectively. A connecting part of the inner seal ring pieces 16A and a connecting part of the outer seal ring pieces 17 are arranged not to overlap each other. An inner diameter of the inner seal ring 16 is variable in accordance with an outer diameter in vertical direction of a drawing-preform 1 by using a coil spring 18.

    摘要翻译： 内密封圈16通过连接多个内密封环片16A而构成，外密封环17通过连接设置在内密封圈16的外周的多个外密封圈片17A和 在外密封环17的外周配置有螺旋弹簧18.内密封环16和外密封圈17分别堆叠两级以上。 内密封环片16A的连接部分和外密封环件17的连接部分彼此不重叠。 内密封环16的内径可以通过使用螺旋弹簧18根据拉伸成型体1的垂直方向的外径而变化。