Method for cutting glass rod and cutting device for use therein
    1.
    发明授权
    Method for cutting glass rod and cutting device for use therein 有权
    用于切割玻璃棒和切割装置的方法

    公开(公告)号:US06978641B2

    公开(公告)日:2005-12-27

    申请号:US10474823

    申请日:2001-11-22

    Abstract: To provide a method and apparatus for parting a glass rod without causing a crack or rupture at a grasped root portion of the glass rod in parting the glass rod for producing a glass preform.The apparatus for parting the glass rod in a predetermined length by grasping both ends of the glass rod 11 is characterized by comprising a supporting unit 18 of Y-character shape for supporting an intermediate position between both ends of the glass rod 11 from the lower part, the supporting unit 18 having a carbon sleeve composed of a cylindrical body that is rotatable around each of two leg portions making up a forked leg portion as an axis, the carbon sleeve being rotatable along with an axial movement of the glass rod.

    Abstract translation: 提供一种用于分离玻璃棒的方法和装置,而不会在分离用于制造玻璃预制件的玻璃棒的玻璃棒的被抓住的根部处产生裂纹或破裂。 通过抓住玻璃棒11的两端来将玻璃棒分割成预定长度的装置的特征在于包括一个Y字形支撑单元18,用于在玻璃棒11的两端之间从下部支撑中间位置 支撑单元18具有由圆筒体组成的碳套筒,该圆筒体可以围绕作为轴线的叉形腿部分的两个腿部部分中的每一个旋转,所述碳套筒可随玻璃棒的轴向运动而旋转。

    METHOD AND APPARATUS FOR PRODUCING OPTICAL FIBER
    2.
    发明申请
    METHOD AND APPARATUS FOR PRODUCING OPTICAL FIBER 有权
    用于生产光纤的方法和装置

    公开(公告)号:US20110198766A1

    公开(公告)日:2011-08-18

    申请号:US13125014

    申请日:2009-10-19

    Abstract: An optical fiber producing method and apparatus are provided in which sufficient pulling tension is applied to an optical fiber to enhance the twisting efficiency without affecting winding tension of a winding bobbin, whereby the PMD of the optical fiber can be reduced. In a method of producing an optical fiber in which, in a path where an optical fiber 11 is reeled out from a supply bobbin 10, taken up by take-up means 20, and wound by a winding bobbin 24, twists are alternately imparted to the optical fiber 11 by a twist imparting portion 18, a zone where a high tension load is allowed to be applied to the optical fiber without affecting winding tension of the winding bobbin is disposed, a twist is imparted in the zone, and, when tension immediately before the twist imparting portion is indicated by T (g), a free path length is indicated by L, a twisting amount is indicated by R (turns/m), and a and b are constants, the tension and free path length by which the twisting amount R approximated by “R=a×T×Lb” is made “2” or more are set.

    Abstract translation: 提供一种光纤制造方法和装置,其中对光纤施加足够的拉伸张力以提高扭转效率,而不会影响卷绕筒管的卷绕张力,从而可以减小光纤的PMD。 在制造光纤的方法中,其中在从供给线轴10卷出光纤11的路径中,通过卷绕装置20卷绕并缠绕在卷绕筒管24上的卷绕方式交替地施加扭曲 通过扭转施加部分18设置光纤11,允许对光纤施加高张力负载的区域而不影响卷绕筒管的卷绕张力,在该区域中施加扭曲,并且当张力 在扭曲赋予部分之前由T(g)表示,自由路径长度用L表示,扭转量用R(匝/ m)表示,a和b是常数,张力和自由路径长度由 将由“R = a×T×Lb”近似的扭转量R设定为“2”以上。

    Process for producing a glass preform for an optical fiber and apparatus
for the same
    3.
    发明授权
    Process for producing a glass preform for an optical fiber and apparatus for the same 失效
    光纤用玻璃预制体的制造方法及其制造方法

    公开(公告)号:US5639290A

    公开(公告)日:1997-06-17

    申请号:US457802

    申请日:1995-06-01

    CPC classification number: C03B37/0144 Y02P40/57

    Abstract: The present invention relates to a process for producing a porous glass preform for an optical fiber and an apparatus for conducting such a process. According to the process, fine glass particles are produced by heating and reacting vaporous starting materials in a reaction vessel. The resulting fine glass particles are thereafter deposited to obtain the porous glass preform. An exhaust gas containing non-deposited fine glass particles is exhausted through an exhaust duct at a velocity above 15 m/sec. Preferably, pressure fluctuation in the reaction vessel is minimized by supplying air from outside of the reaction vessel to the exhaust duct. In accordance with the present invention, the exhaust duct is less likely to become obstructed by non-deposited fine glass particles. As a result, the preform can be produced without interruption over an extended period of time.

    Abstract translation: 本发明涉及一种用于制造光纤用多孔玻璃预制件的方法和用于进行这种方法的设备。 根据该方法,通过在反应容器中加热和使蒸气原料反应来制造细玻璃颗粒。 然后沉积所得细玻璃颗粒以获得多孔玻璃预制件。 含有未沉积的微细玻璃颗粒的废气以15m / sec的速度通过排气管排出。 优选地,通过从反应容器的外部向排气管供应空气来最小化反应容器中的压力波动。 根据本发明,排气管不太可能被未沉积的微细玻璃颗粒所妨碍。 结果,可以在长时间内不间断地制造预成型件。

    Equipment for providing twist to an optical fiber
    4.
    发明授权
    Equipment for providing twist to an optical fiber 有权
    用于向光纤提供扭曲的设备

    公开(公告)号:US08245541B2

    公开(公告)日:2012-08-21

    申请号:US12578058

    申请日:2009-10-13

    CPC classification number: C03B37/02745 C03B37/032

    Abstract: Simple and small-sized equipment which continuously afford alternate twists to an optical fiber and a method using the apparatus are provided. The equipment includes: a guide roller for causing the fiber to roll; a roller supporting member for holding the roller in a manner allowing the roller to freely turn about an axial center X; and a driving unit to cause the roller to oscillate by making the supporting member to turn about an axial center Y that is inclined relative to the axial center X. The method includes: arranging a guide roller to intersect the fiber, the roller being held by a roller supporting member to freely turn about an axial center X; oscillating the roller by driving the supporting member to revolve about the axial center Y which is inclined relative to the axis center X; and causing the fiber to roll to afford alternate twists to the fiber.

    Abstract translation: 提供了连续提供光纤交替扭曲的简单和小型设备以及使用该设备的方法。 该设备包括:用于使纤维滚动的导辊; 用于以允许辊绕轴心X自由转动的方式保持辊的辊支撑构件; 以及驱动单元,通过使支撑构件绕相对于轴心X倾斜的轴心Y转动而使辊振动。该方法包括:布置导辊与纤维相交,辊被保持在 滚子支撑构件,用于绕轴心X自由转动; 通过驱动支撑构件绕相对于轴心X倾斜的轴向中心Y旋转来摆动辊; 并使纤维滚动以给纤维提供交替的扭曲。

    Air-tight sintering furnace for the production of a quartz preform
    5.
    发明授权
    Air-tight sintering furnace for the production of a quartz preform 失效
    用于生产QUARTZ预制件的空气烧结炉

    公开(公告)号:US5133796A

    公开(公告)日:1992-07-28

    申请号:US613878

    申请日:1990-11-28

    CPC classification number: C03B37/0146 C03B2201/12 Y10S65/90

    Abstract: This invention relates to a sintering furnace for the production of a quartz preform which can be used for carrying out dehydration, fluorine-addition and/or sintering of a porous quartz soot preform prepared by a flame hydrolysis method such as a VAD method or a OVD method, and in particular, to such a furnace in which joints in a long furnace muffle so long that fabricating it as open body is impossible can be maintained fully gas-tight, so that it is possible to prevent H.sub.2 O, O.sub.2 and other impurities in the air from entering the muffle from outside, and corrosive and poisonous gases in the muffle are prevented from leakage to outside the muffle. This sintering furnace has a muffle of high purity carbon, the inner wall and/or outer wall of which is coated with a gas-impermeable film, which muffle is a cylinder with an axis in the longitudinal direction and divided into a plurality of parts in the longitudinal direction, the parts each having the upper and lower ends finished so as to be flat and abutting adjacent parts sealed by a carbon gasket between them, and further has an air cylinder for pressing the parts together in the axial direction with a uniform force around the circumference of the muffle.

    Abstract translation: PCT No.PCT / JP90 / 00418 Sec。 371日期1990年11月28日 102(e)1990年11月28日PCT PCT 1990年3月28日PCT公布。 出版物WO90 / 11973 1990年10月18日的日期。本发明涉及一种用于生产石英预制棒的烧结炉,其可用于对通过火焰水解法制备的多孔石英烟灰预制件进行脱水,加氟和/或烧结 作为VAD方法或OVD方法,特别是在这样一种炉子中,其中长炉膛中长度相等的接头不可能被保持为开放体,从而可以完全保持气密性,从而可以防止 空气中的H2O,O2和其他杂质从外部进入马弗炉,并且防止马弗炉中的腐蚀性和有毒气体泄漏到马弗炉外部。 该烧结炉具有高纯度碳的马弗管,其内壁和/或外壁涂有气体不可渗透膜,该马弗管是沿纵向轴线的圆筒,并分成多个部分 纵向方向,上下两端的部分被平坦化并邻接在它们之间的碳垫圈密封的相邻部分,并且还具有用于以均匀的力在轴向上将部件按压在一起的气缸 围绕马弗炉的圆周。

    Method and apparatus for producing optical fiber
    6.
    发明授权
    Method and apparatus for producing optical fiber 有权
    光纤制造方法及装置

    公开(公告)号:US08443581B2

    公开(公告)日:2013-05-21

    申请号:US13125014

    申请日:2009-10-19

    Abstract: An optical fiber producing method and apparatus for producing an optical fiber in which, in a path where an optical fiber is reeled out from a supply bobbin, taken up by take-up means, and wound by a winding bobbin, twists are alternately imparted to the optical fiber by a twist imparting portion. A zone where a high tension load is allowed to be applied to the optical fiber without affecting winding tension of the winding bobbin is disposed, a twist is imparted in the zone, and, when tension immediately before the twist imparting portion is indicated by T (g), a free path length is indicated by L, a twisting amount is indicated by R (turns/m), and a and b are constants, the tension and free path length by which the twisting amount R approximated by “R=a×T×Lb” is made “2” or more are set.

    Abstract translation: 一种光纤的制造方法及其制造方法,其特征在于,在将光纤从供给线轴卷出的路径中,由卷取机构卷绕并卷绕在卷取筒管上, 光纤通过扭曲赋予部分。 在不影响卷绕筒管的卷绕张力的情况下,设置能够对光纤施加高张力负荷的区域,在该区域内施加扭曲,并且在扭曲赋予部分之前的张力被T( g),自由路径长度用L表示,扭转量由R(匝数/ m)表示,a和b是常数,由R = a近似的扭转量R的张力和自由路径长度 ×T×Lb“为”2“以上。

    Raw material supply device
    7.
    发明授权
    Raw material supply device 失效
    原料供应装置

    公开(公告)号:US4545801A

    公开(公告)日:1985-10-08

    申请号:US577419

    申请日:1984-02-06

    Abstract: A device is disclosed for supplying a glass raw material gas in the form of the mixed gas consisting of the glass raw material gas and the carrier gas to a vapor deposition device for producing a preform of an optical fiber, the supply device including a secondary raw material container having a pressurizable interior and provided adjacent to a main raw material container. The bottoms, or areas near the bottoms, of the two containers are interconnected via a pipe including at a mid portion thereof a switching valve and a device for adjusting the flow rate of the raw material liquid between the two containers. Liquid level detectors are provided in one or both containers to maintain the constant volume of the liquid raw material so as to provide a constant state inside the main raw material container. The operation of this device can easily be entirely automated.

    Abstract translation: 公开了一种用于将由玻璃原料气体和载气组成的混合气体的玻璃原料气体供给到用于制造光纤预制棒的气相沉积装置的装置,该装置包括二次生原料 材料容器具有可加压的内部并邻近主要原料容器设置。 两个容器的底部或底部附近的区域通过管道相互连接,该管道在其中部包括切换阀和用于调节两个容器之间的原料液体的流量的装置。 在一个或两个容器中设置液位检测器,以维持液体原料的恒定体积,以便在主原料容器内提供恒定的状态。 该设备的操作可以很容易地完全自动化。

Patent Agency Ranking