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公开(公告)号：US20230406752A1
公开(公告)日：2023-12-21
申请号：US18198445
申请日：2023-05-17
申请人： CORNING INCORPORATED
IPC分类号： C03B37/029 , F23D14/84
CPC分类号： C03B37/029 , F23D14/84 , F23D2900/21 , C03B2205/70 , C03B2205/68
摘要： A method of heating an optical fiber, the method including flowing gas from a common gas channel into one or more gas outlets of a burner, the common gas channel encircling an aperture of the burner. The method further including igniting the gas to form a flame and heating the fiber with the flame as the fiber passes through the aperture. The one or more gas outlets opening into the aperture such that each gas outlet has a gas outlet bore terminating at an inward-facing wall of the burner that defines the aperture. And the gas outlet bore being oriented at an angle θ1 defined between the gas outlet bore and the inward-facing wall of the burner, downstream of the gas outlet bore, that is greater than or equal to 10 degrees and less than or equal to 70 degrees.
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2.发明申请公开(公告)号：US20220332627A1
公开(公告)日：2022-10-20
申请号：US17853905
申请日：2022-06-29
发明人： Tetsuya OTOSAKA
IPC分类号： C03B37/03 , C03C13/04 , C03B37/027 , C03B37/029
摘要： A wire-drawing optical fiber base material manufacturing method of heating an optical fiber base material by a heater and forming a drawing shape portion at an end portion. The manufacturing method includes: forming, by a flow-regulating member disposed adjacent to the heater, a gas flow such that formation, along a surface of the optical fiber base material, of a flow of a gas containing a Si compound generated from the optical fiber base material heated by the heater is inhibited; and forming, while maintaining the gas flow, the drawing shape portion by pulling part of the optical fiber base material softened by being heated by the heater.
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3.发明授权公开(公告)号：US11384006B2
公开(公告)日：2022-07-12
申请号：US15909912
申请日：2018-03-01
发明人： Tetsuya Otosaka
IPC分类号： C03B37/03 , C03C13/04 , C03B37/027 , C03B37/029
摘要： A wire-drawing optical fiber base material manufacturing method of heating an optical fiber base material by a heater and forming a drawing shape portion at an end portion. The manufacturing method includes: forming, by a flow-regulating member disposed adjacent to the heater, a gas flow such that formation, along a surface of the optical fiber base material, of a flow of a gas containing a Si compound generated from the optical fiber base material heated by the heater is inhibited; and forming, while maintaining the gas flow, the drawing shape portion by pulling part of the optical fiber base material softened by being heated by the heater.
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公开(公告)号：US20220212978A1
公开(公告)日：2022-07-07
申请号：US17699282
申请日：2022-03-21
申请人： MADE IN SPACE, INC.
发明人： Jan Clawson , Robert White , Nate Pickslay , Michael Snyder , Geoffrey York Powers , Noah Paul-Gin
IPC分类号： C03B37/02 , C03C13/04 , C03C25/105 , B01D29/60 , B01D29/56 , C03B37/027 , C03B37/07 , C03C25/106 , C03C25/6226 , C03B37/025 , C03B37/029 , C03B37/012 , G02B6/02 , C03B37/03
摘要： A system for precoating a preform for drawing optical fiber including a diameter sensor to determine a diameter of pulled optical fiber, a cooling system to cool the optical fiber once it is pulled from a furnace, a coating system to apply a coating to the optical fiber once it has cooled and an ultra-violet lamp to cure the coating.
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公开(公告)号：US20220119299A1
公开(公告)日：2022-04-21
申请号：US17450561
申请日：2021-10-12
发明人： Yusuke KASHIWAGI
IPC分类号： C03B37/027 , C03B37/029
摘要： Provided is a method of fabricating an optical fiber glass base material, the method including a first step for dehydrating an optical fiber porous base material while causing a gas that includes at least a halogen or argon to distribute within a quartz core tube that accommodates the optical fiber porous base material; a second step for, after the first step, at least partially ventilating within the quartz core tube by causing a gas having helium as a main component to distribute within the quartz core tube; and a third step for, after the second step, transparently vitrifying the optical fiber porous base material while causing the gas having helium as a main component to distribute within the quartz core tube.
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公开(公告)号：US20220106221A1
公开(公告)日：2022-04-07
申请号：US17490407
申请日：2021-09-30
申请人： CORNING INCORPORATED
IPC分类号： C03B37/029 , C03B37/03 , C01B32/21 , C04B35/56 , C04B35/622
摘要： A muffle for an optical fiber draw furnace. The muffle including an inner surface and an outer surface, the inner surface forming an inner cavity. A protective coating is disposed on the inner surface, the protective coating having a melting point of about 1850° C. or greater. Furthermore, an absolute difference between a coefficient of thermal expansion of the protective coating and a coefficient of thermal expansion of a material of the muffle is 2.0 ppm/° C. or less over a temperature range from 25° C. to 1000° C.
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公开(公告)号：US20220002182A1
公开(公告)日：2022-01-06
申请号：US17470499
申请日：2021-09-09
申请人： Corning Incorporated
发明人： Erling Richard Anderson , Tammy Michelle Hoffmann , John Michael Jewell , Nikolaos Pantelis Kladias , Robert Clark Moore
IPC分类号： C03B37/029
摘要： A furnace system includes a muffle defining a furnace cavity. A lower heater is coupled to the muffle and is configured to create a hot zone within the furnace cavity having a temperature of about 1900° C. or greater. An upper muffle extension is positioned above the muffle and defines a handle cavity. A downfeed handle is positioned within the handle cavity such that a gap is defined between an outer surface of the downfeed handle and an inner surface of the upper muffle extension. An upper heater is thermally coupled to the upper muffle extension and configured to heat the gap. A gas screen is positioned in the upper muffle extension and is configured to inject a process gas into the handle cavity.
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公开(公告)号：US11214506B2
公开(公告)日：2022-01-04
申请号：US16498490
申请日：2018-03-29
发明人： Satoshi Yoshikawa
IPC分类号： G03B37/00 , C03B37/027 , C03B37/029 , H01S3/094
摘要： A suspension structure of the present embodiment conveys an optical fiber preform into a drawing furnace. A suspension portion formed in a depressed shape or a projected shape or as a hole is formed in a dummy rod connected on an upper side of the optical fiber preform conveyed into the drawing furnace. The suspension structure includes: a joining mechanism configured to cover at least a part of circumference of the dummy rod and include an arm that extends on both sides in a direction perpendicular to a drawing direction and a retention portion that engages with the suspension portion and retains the optical fiber preform; and an engagement mechanism including a gripping portion with which the arm engages and which hangs the optical fiber preform.
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公开(公告)号：US20200369556A1
公开(公告)日：2020-11-26
申请号：US16876475
申请日：2020-05-18
发明人： Takahiro SAITO , Iwao OKAZAKI , Yoshihiro MORIMOTO , Makoto AOKI
IPC分类号： C03B37/027 , C03B37/029
摘要： An optical fiber manufacturing method includes a first process of passing a glass fiber through a fiber path. The fiber path is formed through a cooling tube that is housed in a first casing. The method also includes a second process of leading the glass fiber into a second casing before leading into the first casing. The first process includes supplying a first dry gas, having a dew point lower than the temperature of the cooling tube, into a first dry space formed between the first casing and the cooling tube. The second process includes supplying a second dry gas into a second dry space formed inside the second casing so as to cause air pressure in the second dry space to be higher than air pressure in an external space. The dew point of the second dry gas is lower than the dew point in the external space.
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公开(公告)号：US20190031551A1
公开(公告)日：2019-01-31
申请号：US16045730
申请日：2018-07-25
申请人： MADE IN SPACE, INC.
发明人： Jan Clawson , Robert White , Nathanael Pickslay , Michael Snyder , Geoffrey Powers , Noah Paul-Gin
IPC分类号： C03B37/025 , C03B37/029
摘要： A system for controlling an ambient microgravity environment of a system for drawing optical fiber including a filter arranged to cleanse an environment from contaminants, a molecular sieve arranged in a series of at least one of meshes and baffles to dehumidify the environment, at least one of a pump and a fan to draw an environmental gas through the filter, through the molecular sieve and back in to an ambient environment and a housing in which the filter, molecular sieve and at least one of pump and fan reside.
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