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公开(公告)号：US20230047162A1
公开(公告)日：2023-02-16
申请号：US17978392
申请日：2022-11-01
Applicant: CORNING INCORPORATED
IPC: C03B37/029 , C03B37/03
Abstract: An optical fiber draw system and method of operating thereof. The method includes positioning a downfeed handle for supporting an optical fiber preform within a furnace such that the downfeed handle is movable within the furnace. The method further includes operating one or more heating elements to thermally heat at least a portion of an upper muffle extension disposed within the furnace, the one or more heating elements being moveable with the downfeed handle.
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公开(公告)号：US20220098085A1
公开(公告)日：2022-03-31
申请号：US17490720
申请日：2021-09-30
Applicant: CORNING INCORPORATED
Inventor： Ravindra Kumar Akarapu , Joel Patrick Carberry , David Alan Deneka , Steven Akin Dunwoody , Kenneth Edward Hrdina , John Michael Jewell , Yuanjie Jiang , Nikolaos Pantelis Kladias , Ming-Jun Li , Barada Kanta Nayak , Dale Robert Powers , Chunfeng Zhou , Vincent Matteo Tagliamonti , Christopher Scott Thomas
IPC: C03B37/027 , C03B37/029
Abstract: In some embodiments, a method for processing an optical fiber includes: drawing an optical fiber through a draw furnace, conveying the optical fiber through a flame reheating device downstream from the draw furnace, wherein the flame reheating device comprises one or more burners each comprising: a body having a top surface and an opposing bottom surface, an opening within the body extending from the top surface through the body to the bottom surface, wherein the optical fiber passes through the opening, and one or more gas outlets within the body; and igniting a flammable gas provided by the one or more gas outlets to form a flame encircling the optical fiber passing through the opening, wherein the flame heats the optical fiber by at least 100 degrees Celsius at a heating rate exceeding 10,000 degrees Celsius/second.
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公开(公告)号：US11198636B2
公开(公告)日：2021-12-14
申请号：US16298532
申请日：2019-03-11
Applicant: Corning Incorporated
Inventor： Erling Richard Anderson , Tammy M Hoffmann , John Michael Jewell , Nikolaos Pantelis Kladias , Robert Clark Moore
IPC: C03B37/029
Abstract: 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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14.发明申请公开(公告)号：US20190292090A1
公开(公告)日：2019-09-26
申请号：US16298532
申请日：2019-03-11
Applicant: Corning Incorporated
Inventor： Erling Richard Anderson , Tammy M Hoffmann , John Michael Jewell , Nikolaos Pantelis Kladias , Robert Clark Moore
IPC: C03B37/029
Abstract: 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：US20170173575A1
公开(公告)日：2017-06-22
申请号：US15375843
申请日：2016-12-12
Applicant: Corning Incorporated
Inventor： Erling Richard Anderson , Stephen Mitchell Carlton , Steven Bruce Dawes , John Michael Jewell , Roger Alan Rose
Abstract: Disclosed herein are methods for regenerating metal catalysts used in the purification of inert gases for use in fiber draw furnaces and other applications. The methods described herein can regenerate metal catalysts alone or in combination with molecular sieves. The methods disclosed herein are able to prevent the formation and retention of unwanted byproducts during and after the regeneration process, thereby efficiently converting oxidized catalysts to their reduced or elemental form. Gases purified with catalysts regenerated by the methods disclosed herein, when used in fiber draw furnaces and similar applications, can lead to extended equipment lifetimes and higher-quality products due to the lack of degradation by contaminants in the gas stream.
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Patent Agency Ranking
公开(公告)号：US11554980B2
公开(公告)日：2023-01-17
申请号：US17470499
申请日：2021-09-09
Applicant: Corning Incorporated
Inventor： Erling Richard Anderson , Tammy Michelle Hoffmann , John Michael Jewell , Nikolaos Pantelis Kladias , Robert Clark Moore
IPC: C03B37/029
Abstract: 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：US11498862B2
公开(公告)日：2022-11-15
申请号：US17155201
申请日：2021-01-22
Applicant: CORNING INCORPORATED
IPC: C03B37/029 , C03B37/03
Abstract: An optical fiber draw system and method of operating thereof. The method includes positioning a downfeed handle for supporting an optical fiber preform within a furnace such that the downfeed handle is movable within the furnace. The method further includes operating one or more heating elements to thermally heat at least a portion of an upper muffle extension disposed within the furnace, the one or more heating elements being moveable with the downfeed handle.
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公开(公告)号：US20210230044A1
公开(公告)日：2021-07-29
申请号：US17155201
申请日：2021-01-22
Applicant: CORNING INCORPORATED
IPC: C03B37/029 , C03B37/03
Abstract: An optical fiber draw system and method of operating thereof. The method includes positioning a downfeed handle for supporting an optical fiber preform within a furnace such that the downfeed handle is movable within the furnace. The method further includes operating one or more heating elements to thermally heat at least a portion of an upper muffle extension disposed within the furnace, the one or more heating elements being moveable with the downfeed handle.
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公开(公告)号：US10773990B2
公开(公告)日：2020-09-15
申请号：US15787956
申请日：2017-10-19
Applicant: Corning Incorporated
Inventor： John Michael Jewell , Nikolaos Pantelis Kladias , Robert Walter Nason , Bruce Warren Reding , Edward Barry Richter , Daniel Paul Veber , Chunfeng Zhou
IPC: C03B37/029 , C03B37/027 , C03B37/025
Abstract: An optical fiber production system is provided which includes a slow-cooling device and a purge device positioned above the slow-cooling device. The purge device includes a tube defining an inlet. An optical fiber extends through the slow-cooling device and the purge device. The purge device is configured to inject a purge gas through the inlet and against the optical fiber.
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公开(公告)号：US20190284084A1
公开(公告)日：2019-09-19
申请号：US16298605
申请日：2019-03-11
Applicant: Corning Incorporated
Inventor： Erling Richard Anderson , John Michael Jewell , Robert Walter Nason , Elias Panides , Xiaoyong Wang , Leo Young Zheng , Chunfeng Zhou
IPC: C03B37/029 , F27B5/10 , F27B5/14 , C03B37/083
Abstract: An optical fiber draw furnace muffle includes a body portion defining a substantially cylindrical cavity extending along a centerline axis of the muffle. A tapered portion has an interior surface which defines a first curved portion with a first radius of curvature and a second curved portion with a second radius of curvature. At least one of the first and second radii of curvature has a radius greater than a radius of the cylindrical cavity.
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