Patents by Inventor Bruce Warren Reding

Bruce Warren Reding has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10773990
    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.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: September 15, 2020
    Assignee: Corning Incorporated
    Inventors: John Michael Jewell, Nikolaos Pantelis Kladias, Robert Walter Nason, Bruce Warren Reding, Edward Barry Richter, Daniel Paul Veber, Chunfeng Zhou
  • Patent number: 10696580
    Abstract: An optical fiber with low fictive temperature along with a system and method for making the optical fiber are provided. The system includes a reheating stage that heats the fiber along the process pathway to a temperature sufficient to lower the fictive temperature of the fiber by relaxing the glass structure and/or driving the glass toward a more nearly equilibrium state. The fiber is drawn from a preform, conveyed along a process pathway, cooled and subsequently reheated to increase the time of exposure of the fiber to temperatures conducive to lowering the fictive temperature of the fiber. The process pathway may include multiple reheating stages as well as one or more fiber-turning devices.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: June 30, 2020
    Assignee: Corning Incorporated
    Inventors: Dana Craig Bookbinder, Ming-Jun Li, Bruce Warren Reding, Pushkar Tandon
  • Publication number: 20190359517
    Abstract: A method of processing an optical fiber includes drawing the optical fiber from a heated glass source, reheating the optical fiber, and cooling the optical fiber under vacuum at a cooling rate less than the cooling rate of the optical fiber in air at 25° C. and 1 atm. Cooling the optical fiber under vacuum is conducted after reheating the optical fiber. Cooling the optical fiber under vacuum reduces the rate of heat transfer from the optical fiber, which may enable further relaxation of the glass and reduction in the fictive temperature of the optical fiber. A system for processing an optical fiber includes a furnace containing a fiber preform, a first positioner, a reheating device, and a treatment device downstream of the reheating device, the treatment device operable to cool the optical fiber under vacuum to reduce the rate of heat transfer from the optical fiber.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 28, 2019
    Inventors: Yacob Mesfin Argaw, Nikolaos Pantelis Kladias, Robert Clark Moore, Bruce Warren Reding, Chunfeng Zhou
  • Publication number: 20190256400
    Abstract: An optical fiber with low attenuation is provided. The fiber is produced under conditions that reduce fictive temperature. Processing includes maintaining the fiber at temperatures at or near the glass transition temperature (Tg) for an extended period of time. For silica-based fibers, the preferred temperatures are temperatures between 1000° C. and 1700° C. The extended residence times are achieved in a continuous fiber manufacturing process by increasing the path length of the fiber through a processing region maintained at temperatures between 1000° C. and 1700° C. The increased path length is achieved by including one or more fluid bearing devices in the processing region. The extended residence time in the processing region allows the structure of the glass fiber to relax more completely and to more closely approach the equilibrium state. The more relaxed glass structure leads to a lower fictive temperature and provides fibers with lower attenuation.
    Type: Application
    Filed: May 1, 2019
    Publication date: August 22, 2019
    Inventors: Dana Craig Bookbinder, Ming-Jun Li, Bruce Warren Reding, Pushkar Tandon
  • Patent number: 10322963
    Abstract: An optical fiber with low attenuation is provided. The fiber is produced under conditions that reduce fictive temperature. Processing includes maintaining the fiber at temperatures at or near the glass transition temperature (Tg) for an extended period of time. For silica-based fibers, the preferred temperatures are temperatures between 1000° C. and 1700° C. The extended residence times are achieved in a continuous fiber manufacturing process by increasing the path length of the fiber through a processing region maintained at temperatures between 1000° C. and 1700° C. The increased path length is achieved by including one or more fluid bearing devices in the processing region. The extended residence time in the processing region allows the structure of the glass fiber to relax more completely and to more closely approach the equilibrium state. The more relaxed glass structure leads to a lower fictive temperature and provides fibers with lower attenuation.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: June 18, 2019
    Assignee: Corning Incorporated
    Inventors: Dana Craig Bookbinder, Ming-Jun Li, Bruce Warren Reding, Pushkar Tandon
  • Publication number: 20190092678
    Abstract: An optical fiber with low fictive temperature along with a system and method for making the optical fiber are provided. The system includes a reheating stage that heats the fiber along the process pathway to a temperature sufficient to lower the fictive temperature of the fiber by relaxing the glass structure and/or driving the glass toward a more nearly equilibrium state. The fiber is drawn from a preform, conveyed along a process pathway, cooled and subsequently reheated to increase the time of exposure of the fiber to temperatures conducive to lowering the fictive temperature of the fiber. The process pathway may include multiple reheating stages as well as one or more fiber-turning devices.
    Type: Application
    Filed: November 13, 2018
    Publication date: March 28, 2019
    Inventors: Dana Craig Bookbinder, Ming-Jun Li, Bruce Warren Reding, Pushkar Tandon
  • Patent number: 10221089
    Abstract: An optical fiber with low fictive temperature along with a system and method for making the optical fiber are provided. The system includes a reheating stage that heats the fiber along the process pathway to a temperature sufficient to lower the fictive temperature of the fiber by relaxing the glass structure and/or driving the glass toward a more nearly equilibrium state. The fiber is drawn from a preform, conveyed along a process pathway, cooled and subsequently reheated to increase the time of exposure of the fiber to temperatures conducive to lowering the fictive temperature of the fiber. The process pathway may include multiple reheating stages as well as one or more fiber-turning devices.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: March 5, 2019
    Assignee: Corning Incorporated
    Inventors: Dana Craig Bookbinder, Ming-Jun Li, Bruce Warren Reding, Pushkar Tandon
  • Publication number: 20190055153
    Abstract: A fluid bearing for directing optical fibers during manufacturing is presented. The fluid bearing provides a flow of fluid to levitate and direct an optical fiber along a process pathway. The optical fiber is situated in a fiber slot and subjected to an upward force from fluid flowing from an inner radial position of the fiber slot past the optical fiber to an outer radial position of the fiber slot. The levitating force of fluid acting on the optical fiber is described by a convex force curve, according to which the upward levitating force on the optical fiber increases as the optical fiber moves deeper in the slot. Better stability in the positioning of the optical fiber in the fiber slot is achieved and contact of the optical fiber with solid surfaces of the fluid bearing is avoided. Various fluid bearing structures for achieving a convex force curve are described.
    Type: Application
    Filed: August 9, 2018
    Publication date: February 21, 2019
    Inventors: Robert Clark Moore, Bruce Warren Reding
  • Patent number: 10031045
    Abstract: In one embodiment, an apparatus for screen testing an optical fiber includes a fiber conveyance pathway, a capstan having an outer circumference and a fiber contact region extending around the outer circumference, the fiber contact region having a durometer hardness of less than or equal to about 40 Shore A, where the capstan is positioned adjacent to the fiber conveyance pathway such that when the optical fiber is directed over the fiber conveyance pathway, the optical fiber engages with the fiber contact region, and a pinch belt positioned adjacent to the fiber conveyance pathway such that the fiber conveyance pathway extends between the pinch belt and the fiber contact region, where the pinch belt is engagable with the fiber contact region such that, when the optical fiber is directed over the fiber conveyance pathway, the optical fiber is impinged between the pinch belt and the fiber contact region.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: July 24, 2018
    Assignee: Corning Incorporated
    Inventors: Kirk Patton Bumgarner, Aditya Kaimal, Michael Terry Murphy, Bruce Warren Reding
  • Publication number: 20180111871
    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.
    Type: Application
    Filed: October 19, 2017
    Publication date: April 26, 2018
    Inventors: John Michael Jewell, Nikolaos Pantelis Kladias, Robert Walter Nason, Bruce Warren Reding, Edward Barry Richter, Daniel Paul Veber, Chunfeng Zhou
  • Publication number: 20170240456
    Abstract: A method and corresponding apparatus for processing optical fiber include directing light from a directed light source toward an optical fiber on a fiber draw. A fiber core of the optical fiber is heated, using at least the light from the directed light source, to a fiber core temperature within a glass transformation temperature range of the fiber core. The method can be used to reduce fictive temperature of the fiber core, with Rayleigh scattering being reduced, leading to lower attenuation losses in the fiber core.
    Type: Application
    Filed: February 14, 2017
    Publication date: August 24, 2017
    Inventors: Ravindra Kumar Akarapu, Ming-Jun Li, Anping Liu, Barada Kanta Nayak, Bruce Warren Reding
  • Publication number: 20170131177
    Abstract: In one embodiment, an apparatus for screen testing an optical fiber includes a fiber conveyance pathway, a capstan having an outer circumference and a fiber contact region extending around the outer circumference, the fiber contact region having a durometer hardness of less than or equal to about 40 Shore A, where the capstan is positioned adjacent to the fiber conveyance pathway such that when the optical fiber is directed over the fiber conveyance pathway, the optical fiber engages with the fiber contact region, and a pinch belt positioned adjacent to the fiber conveyance pathway such that the fiber conveyance pathway extends between the pinch belt and the fiber contact region, where the pinch belt is engagable with the fiber contact region such that, when the optical fiber is directed over the fiber conveyance pathway, the optical fiber is impinged between the pinch belt and the fiber contact region.
    Type: Application
    Filed: January 10, 2017
    Publication date: May 11, 2017
    Inventors: Kirk Patton Bumgarner, Aditya Kaimal, Michael Terry Murphy, Bruce Warren Reding
  • Publication number: 20170073265
    Abstract: An optical fiber with low fictive temperature along with a system and method for making the optical fiber are provided. The system includes a reheating stage that heats the fiber along the process pathway to a temperature sufficient to lower the fictive temperature of the fiber by relaxing the glass structure and/or driving the glass toward a more nearly equilibrium state. The fiber is drawn from a preform, conveyed along a process pathway, cooled and subsequently reheated to increase the time of exposure of the fiber to temperatures conducive to lowering the fictive temperature of the fiber. The process pathway may include multiple reheating stages as well as one or more fiber-turning devices.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 16, 2017
    Inventors: Dana Craig Bookbinder, Ming-Jun Li, Bruce Warren Reding, Pushkar Tandon
  • Patent number: 9574969
    Abstract: In one embodiment, an apparatus for screen testing an optical fiber includes a fiber conveyance pathway, a capstan having an outer circumference and a fiber contact region extending around the outer circumference, the fiber contact region having a durometer hardness of less than or equal to about 40 Shore A, where the capstan is positioned adjacent to the fiber conveyance pathway such that when the optical fiber is directed over the fiber conveyance pathway, the optical fiber engages with the fiber contact region, and a pinch belt positioned adjacent to the fiber conveyance pathway such that the fiber conveyance pathway extends between the pinch belt and the fiber contact region, where the pinch belt is engageable with the fiber contact region such that, when the optical fiber is directed over the fiber conveyance pathway, the optical fiber is impinged between the pinch belt and the fiber contact region.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: February 21, 2017
    Assignee: Corning Incorporated
    Inventors: Kirk Patton Bumgarner, Aditya Kaimal, Michael Terry Murphy, Bruce Warren Reding
  • Patent number: 9440873
    Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: September 13, 2016
    Assignee: Corning Incorporated
    Inventors: Gary Alan Cummings, Samir Khanna, Douglas Gregg Neilson, Thomas Andre Pedersen, Massoud Rahiminejad, Bruce Warren Reding
  • Publication number: 20160168008
    Abstract: An optical fiber with low attenuation is provided. The fiber is produced under conditions that reduce fictive temperature. Processing includes maintaining the fiber at temperatures at or near the glass transition temperature (Tg) for an extended period of time. For silica-based fibers, the preferred temperatures are temperatures between 1000° C. and 1700° C. The extended residence times are achieved in a continuous fiber manufacturing process by increasing the path length of the fiber through a processing region maintained at temperatures between 1000° C. and 1700° C. The increased path length is achieved by including one or more fluid bearing devices in the processing region. The extended residence time in the processing region allows the structure of the glass fiber to relax more completely and to more closely approach the equilibrium state. The more relaxed glass structure leads to a lower fictive temperature and provides fibers with lower attenuation.
    Type: Application
    Filed: November 19, 2015
    Publication date: June 16, 2016
    Inventors: Dana Craig Bookbinder, Ming-Jun Li, Bruce Warren Reding, Pushkar Tandon
  • Publication number: 20150323434
    Abstract: In one embodiment, an apparatus for screen testing an optical fiber includes a fiber conveyance pathway, a capstan having an outer circumference and a fiber contact region extending around the outer circumference, the fiber contact region having a durometer hardness of less than or equal to about 40 Shore A, where the capstan is positioned adjacent to the fiber conveyance pathway such that when the optical fiber is directed over the fiber conveyance pathway, the optical fiber engages with the fiber contact region, and a pinch belt positioned adjacent to the fiber conveyance pathway such that the fiber conveyance pathway extends between the pinch belt and the fiber contact region, where the pinch belt is engagable with the fiber contact region such that, when the optical fiber is directed over the fiber conveyance pathway, the optical fiber is impinged between the pinch belt and the fiber contact region.
    Type: Application
    Filed: April 27, 2015
    Publication date: November 12, 2015
    Inventors: Kirk Patton Bumgarner, Aditya Kaimal, Michael Terry Murphy, Bruce Warren Reding
  • Patent number: 8973408
    Abstract: An optical fiber production system and method are provided for producing optical fiber. An optical fiber is drawn from a preform in a furnace and passes through a treatment device under a controlled reduced pressure or partial vacuum in the range of 0.01 to 0.8 atm. The treatment device cools the bare optical fiber as it cools to a temperature range of at least 1,600° C. to 1,300° C. A non-contact fiber centering device is located near an exit of the treatment device to provide linear centering of the optical fiber as it exits the treatment device.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: March 10, 2015
    Assignee: Corning Incorporated
    Inventors: Andrey V Filippov, Robert C Moore, Bruce Warren Reding, David Andrew Tucker
  • Patent number: 8689636
    Abstract: A method and device for continuously testing the tensile strength of an optical fiber, wherein the incoming optical fiber is wrapped at least partially around a payout capstan, to an intermediate payout pulley, at least partially around the intermediate payout pulley, and back to the payout capstan. The optical fiber is then wound from the payout capstan to a tensile testing measurement component, and then to an uptake capstan. The optical fiber is wrapped at least partially around the uptake capstan, to an intermediate uptake pulley, at least partially around the intermediate uptake pulley, and back to the uptake capstan. The payout capstan and uptake capstan are operated at a desired rotational speed to continuously advance the optical fiber for tensile strength testing.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: April 8, 2014
    Assignee: Corning Incorporated
    Inventors: David Andrew Bednarczyk, Kirk Patton Bumgarner, Aditya Kaimal, Bruce Warren Reding
  • Publication number: 20130312461
    Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.
    Type: Application
    Filed: August 6, 2013
    Publication date: November 28, 2013
    Applicant: Corning Incorporated
    Inventors: Gary Alan Cummings, Samir Khanna, Douglas Gregg Neilson, Thomas Andre Pedersen, Massoud Rahiminejad, Bruce Warren Reding