Glass-fiber-yarn connected body
    4.
    发明授权

    公开(公告)号:US10900146B2

    公开(公告)日:2021-01-26

    申请号:US16474592

    申请日:2017-12-11

    摘要: The glass-fiber-yarn joined body 1 is provided with glass fiber yarns 2, 3, and a connection 5 in which a resin yarn 4 is wound around ends of both of the glass fiber yarns 2, 3, the ends being superimposed with each other. The connection 5 has a width W1 of 20 to 40 mm. When a connection diameter R as a total of diameters of the respective glass fiber yarns 2, 3 and the thickness of the resin yarn 4 wound around the connection 5 is 500 to 5000 μm and a mass of each of the glass fiber yarns 2, 3 is 200 to 6000 tex, a value of a ratio of mass of each of the glass fiber yarns 2, 3 relative to the connection diameter R is in the range of 0.32 to 2.00.

    HEAT TREATMENT APPARATUS
    6.
    发明申请

    公开(公告)号:US20170253520A1

    公开(公告)日:2017-09-07

    申请号:US15443379

    申请日:2017-02-27

    摘要: It is an object of the present invention to allow a furnace core tube used for a heat treatment apparatus of a porous glass base material to be used for a long period of time.A heat treatment apparatus includes: a furnace core tube made of silica glass; a heater provided adjacent to the furnace core tube, the heater heating a heating region; and a moving mechanism supporting a porous glass base material and relatively moving the porous glass base material with respect to the heater in the furnace core tube in a state where the heating region is heated by the heater to make the porous glass base material pass through the heating region. The heat treatment apparatus includes a thin-walled part provided in a region adjacent to a portion located in the heating region in the furnace core tube, the thin-walled part having a thickness of glass less than that of the portion located in the heating region.

    Porous glass base material sintering method
    8.
    发明授权
    Porous glass base material sintering method 有权
    多孔玻璃基材烧结方法

    公开(公告)号:US09067815B2

    公开(公告)日:2015-06-30

    申请号:US13760069

    申请日:2013-02-06

    发明人: Makoto Yoshida

    摘要: It is an objective of the present invention to provide a method for sintering a porous glass base material that can experience an earthquake or large vibration without the base material falling or decreasing in quality when performing sintering, dehydration, and transparent vitrification on the porous glass base material. Provided is a method of sintering a porous glass base material including sintering by lowering the porous glass base material vertically through a furnace from above while rotating the porous glass base material, the method comprising changing rotational speed of the porous glass base material during the sintering.

    摘要翻译: 本发明的目的是提供一种多孔玻璃基材的烧结,脱水,透明玻璃化的多孔玻璃基材的烧结方法。 材料。 本发明提供一种烧结多孔玻璃基材的方法,包括通过在多孔玻璃基材旋转的同时使上述多孔玻璃基材从上方垂直放置而直接通过炉内烧结而进行烧结的方法,该方法包括在烧结期间改变多孔玻璃基材的转速。

    HIGH TEMPERATURE FIBER OPTIC TURNAROUND
    10.
    发明申请
    HIGH TEMPERATURE FIBER OPTIC TURNAROUND 有权
    高温光纤旋钮

    公开(公告)号:US20120039561A1

    公开(公告)日:2012-02-16

    申请号:US13208910

    申请日:2011-08-12

    IPC分类号: G02B6/00 C03B37/10

    摘要: A sensing cable includes a pair of sensing fibers that are connected to one another by a U-shaped turnaround section. The turnaround section is a section of sensing fiber coated with a jacket that includes metallic components. The turnaround section is bent and, then, annealed according to a method of the present invention. The turnaround section is robust and reduced in size (i.e., radius). The sensing cable also includes an inner sleeve that surrounds the sensing fibers and an elongated outer armor casing (i.e., including an armor tube and a sealing cap) that encases a terminating end thereof. The armor tube and the sealing cap protect the sensing fiber from mechanical and chemical harm, are reduced in size and facilitate insertion of the sensing cable into downhole environments. The sensing cable has improved operating range up to 300° C.

    摘要翻译: 传感电缆包括一对传感纤维,它们通过U形周转部彼此连接。 周转部分是涂覆有包括金属部件的护套的感测纤维的一部分。 弯曲部分弯曲,然后根据本发明的方法进行退火。 转向部分是坚固的并且尺寸减小(即,半径)。 感测电缆还包括围绕感测纤维的内套筒和包围其终端的细长外装甲套管(即,包括铠装管和密封帽)。 护甲管和密封盖保护传感纤维免受机械和化学伤害,尺寸减小,便于将感测电缆插入井下环境。 传感电缆的工作范围可达300°C。