Patents by Inventor Robert Clark Moore

Robert Clark Moore 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).

  • Publication number: 20190292090
    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.
    Type: Application
    Filed: March 11, 2019
    Publication date: September 26, 2019
    Inventors: Erling Richard Anderson, Tammy M Hoffmann, John Michael Jewell, Nikolaos Pantelis Kladias, Robert Clark Moore
  • Publication number: 20190177216
    Abstract: An optical fiber and its manufacture are provided. The optical fiber includes an optical waveguide and a cured primary coating layer surrounding the optical waveguide. The optical fiber further includes a cured secondary coating layer surrounding the cured primary coating layer. The optical fiber further includes a cured tertiary ink coating layer surrounding the cured secondary coating layer. The cured tertiary ink coating layer has a glass transition temperature (Tg-ink) of greater than or equal to 75° C.
    Type: Application
    Filed: November 8, 2018
    Publication date: June 13, 2019
    Inventors: Dana Craig Bookbinder, Robert Clark Moore, Darren Andrew Stainer, Pushkar Tandon, Ruchi Tandon, Michael James Todt
  • 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
  • Publication number: 20180304304
    Abstract: A method of applying a coating liquid to an optical fiber is described. An optical fiber is drawn through a guide die into a pressurized coating chamber and through the pressurized coating chamber to a sizing die. The pressurized coating chamber contains a coating liquid. The method includes directing coating liquid in a direction transverse to the processing pathway of the optical fiber in the pressurized coating chamber. The transverse flow of coating liquid counteracts detrimental effects associated with gyres that form in the pressurized coating chamber during the draw process. Benefits of the transverse flow include removal of bubbles, reduction in the temperature of the gyre, improved wetting, homogenization of the properties of the coating liquid in the pressurized coating chamber, and stabilization of the meniscus.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 25, 2018
    Inventors: Robert Clark Moore, Douglas Gregg Neilson, Johnnie Edward Watson
  • Publication number: 20180246274
    Abstract: An optical fiber production system includes an annealing furnace having a furnace inlet, a furnace outlet, and a process tube extending between the furnace inlet and the furnace outlet, the process tube having a process tube wall and a heating zone including at least one heating element. The optical fiber production system also includes a gas distribution assembly fluidly coupled to the furnace outlet and structurally configured to induce gas flow from the gas distribution assembly into the process tube such that gas flows within the process tube in an upflow direction.
    Type: Application
    Filed: February 20, 2018
    Publication date: August 30, 2018
    Inventors: Kenneth Duane Billings, Spencer Thomas Kingsbury, Robert Clark Moore, Michael James Todt, Johnnie Edward Watson
  • Patent number: 10036108
    Abstract: One embodiment of the disclosure relates to a fiber coating apparatus having a fiber entrance opening, a conical section with walls tapered at half angles between 2 and 25° and height (also referred to as length herein) L1 between 0.25 mm and 2 mm, and a cylindrical land portion of diameter d2 between 0.1 and 0.5 mm and height (length) L2 between 0.05 and 1.25 mm.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: July 31, 2018
    Assignee: Corning Incorporated
    Inventors: Robert Clark Moore, Douglas Gregg Neilson
  • Publication number: 20180208504
    Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle ?, wherein 2°???25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm?d2?0.5 mm and a cylindrical height of L2, wherein 0.05 mm?L2?1.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 26, 2018
    Inventors: Sumitava De, Robert Clark Moore, Douglas Gregg Neilson, Pushkar Tandon
  • Publication number: 20180093915
    Abstract: Optical fibers having low fictive temperature and methods of making such fibers are described. Management of the cooling rate of an optical fiber during fiber draw permits control over the fictive temperature of the fiber. Non-monotonic cooling rates are shown to promote reductions in fiber fictive temperature. The non-monotonic cooling includes slower cooling rates in upstream portions of the process pathway and faster cooling rates in downstream portions of the process pathway. Reduction in fiber fictive temperature is achieved by controlling the ambient temperature of the fiber to slow the cooling rate of the fiber in upstream portions of the process pathway that correspond to the fiber temperature regime in which the fiber viscosity is sufficiently low to permit efficient structural relaxation. Increases in cooling rate in downstream portions of the process pathway permit adjustment of fiber temperature as needed to meet entrance temperature requirements of downstream processing units.
    Type: Application
    Filed: September 20, 2017
    Publication date: April 5, 2018
    Inventors: Steven Akin Dunwoody, Robert Clark Moore, Pushkar Tandon
  • Patent number: 9932260
    Abstract: According to some embodiments a method of processing an optical fiber comprises the steps of: (i) drawing the fiber at a drawing rate of at least 30 m/sec; and (ii) cooling the drawn fiber in a gas at an average cooling rate less than 5000° C./s, such that said cooling reduces the temperature of the fiber from an entering temperature in the range between 1500° C. and 1700° C. to another temperature in the range between 1200° C. and 1400° C., the gas being at a temperature between 800° C. and 1500° C.; and the thermal conductivity ? of the gas being not greater than 1.5×10?4 cal/cm-s-K for at least one temperature within a range of 800° C. to 1500° C. at one atm (atmosphere) pressure absolute.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: April 3, 2018
    Assignee: Corning Incorporated
    Inventors: Kenneth Duane Billings, Dana Craig Bookbinder, Paul Andrew Chludzinski, Robert Clark Moore, Pushkar Tandon
  • Publication number: 20170297947
    Abstract: According to some embodiments a method of processing an optical fiber comprises the steps of: (i) drawing the fiber at a drawing rate of at least 30 m/sec; and (ii) cooling the drawn fiber in a gas at an average cooling rate less than 5000° C./s, such that said cooling reduces the temperature of the fiber from an entering temperature in the range between 1500° C. and 1700° C. to another temperature in the range between 1200° C. and 1400° C., the gas being at a temperature between 800° C. and 1500° C.; and the thermal conductivity ? of the gas being not greater than 1.5×10?4 cal/cm-s-K for at least one temperature within a range of 800° C. to 1500° C. at one atm (atmosphere) pressure absolute.
    Type: Application
    Filed: October 28, 2016
    Publication date: October 19, 2017
    Inventors: Kenneth Duane Billings, Dana Craig Bookbinder, Paul Andrew Chludzinski, Robert Clark Moore, Pushkar Tandon
  • Publication number: 20170144930
    Abstract: An optical fiber production system is provided. The system includes a draw furnace from which an optical fiber is drawn along a first vertical pathway, at least one coating system where at least one coating is applied to the optical fiber and an irradiator in which the at least one coating is cured. The system also includes a fiber take-up system including a fiber storage spool, a whip shield that substantially surrounds the fiber storage spool and at least one light emitting diode (LED) positioned in the interior of the whip shield, wherein the at least one LED directs UV light to coated optical fiber in the fiber take-up system.
    Type: Application
    Filed: November 17, 2016
    Publication date: May 25, 2017
    Inventor: Robert Clark Moore
  • Publication number: 20160321632
    Abstract: A system for storing key information for duplicating a key includes a kiosk comprising a key identification module. After identifying key blank and bitting pattern information for one or more master keys associated with a user, the kiosk receives a user request to store the identified key information on a remote device associated with the user. Upon verification of the user's identity, the kiosk may encrypt the identified key information, and transmit it to the remote device for storage. On a future visit, upon verification of the user's identity, a kiosk comprising a key identification module and a key cutting module may receive and decrypt the previously stored key information from the remote device. The kiosk may cut the key for the user via the key cutting module based on the previously stored key information.
    Type: Application
    Filed: April 27, 2016
    Publication date: November 3, 2016
    Inventors: Robert Clark Moore, Gary Edward Will
  • Patent number: 9309143
    Abstract: A method of making optical fibers that includes controlled cooling to produce fibers having a low concentration of non-bridging oxygen defects and low sensitivity to hydrogen. The method may include heating a fiber preform above its softening point, drawing a fiber from the heated preform and passing the fiber through two treatment stages. The fiber may enter the first treatment stage at a temperature between 1500° C. and 1700° C., may exit the first treatment stage at a temperature between 1200° C. and 1400° C., and may experience a cooling rate less than 5000° C./s in the first treatment stage. The fiber may enter the second treatment stage downstream from the first treatment stage at a temperature between 1200° C. and 1400° C., may exit the second treatment stage at a temperature between 1000° C. and 1150° C., and may experience a cooling rate between 5000° C./s and 12,000° C./s in the second treatment stage.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: April 12, 2016
    Assignee: Corning Incorporated
    Inventors: Steven Akin Dunwoody, Robert Clark Moore, Pushkar Tandon
  • Publication number: 20150315062
    Abstract: A method of making optical fibers that includes controlled cooling to produce fibers having a low concentration of non-bridging oxygen defects and low sensitivity to hydrogen. The method may include heating a fiber preform above its softening point, drawing a fiber from the heated preform and passing the fiber through two treatment stages. The fiber may enter the first treatment stage at a temperature between 1500° C. and 1700° C., may exit the first treatment stage at a temperature between 1200° C. and 1400° C., and may experience a cooling rate less than 5000° C./s in the first treatment stage. The fiber may enter the second treatment stage downstream from the first treatment stage at a temperature between 1200° C. and 1400° C., may exit the second treatment stage at a temperature between 1000° C. and 1150° C., and may experience a cooling rate between 5000° C./s and 12,000° C./s in the second treatment stage.
    Type: Application
    Filed: July 22, 2014
    Publication date: November 5, 2015
    Inventors: Steven Akin Dunwoody, Robert Clark Moore, Pushkar Tandon
  • Publication number: 20150147467
    Abstract: One embodiment of the disclosure relates to a fiber coating apparatus having a fiber entrance opening, a conical section with walls tapered at half angles between 2 and 25° and height (also referred to as length herein) L1 between 0.25 mm and 2 mm, and a cylindrical land portion of diameter d2 between 0.1 and 0.5 mm and height (length) L2 between 0.05 and 1.
    Type: Application
    Filed: October 23, 2014
    Publication date: May 28, 2015
    Inventors: Robert Clark Moore, Douglas Gregg Neilson
  • Publication number: 20150040614
    Abstract: A method of making optical fibers that includes controlled cooling to produce fibers having a low concentration of non-bridging oxygen defects and low sensitivity to hydrogen. The method may include heating a fiber preform above its softening point, drawing a fiber from the heated preform and passing the fiber through two treatment stages. The fiber may enter the first treatment stage at a temperature between 1500° C. and 1700° C., may exit the first treatment stage at a temperature between 1200° C. and 1400° C., and may experience a cooling rate less than 5000° C./s in the first treatment stage. The fiber may enter the second treatment stage downstream from the first treatment stage at a temperature between 1200° C. and 1400° C., may exit the second treatment stage at a temperature between 1000° C. and 1150° C., and may experience a cooling rate between 5000° C./s and 12,000° C./s in the second treatment stage.
    Type: Application
    Filed: July 23, 2014
    Publication date: February 12, 2015
    Inventors: Steven Akin Dunwoody, Robert Clark Moore, Pushkar Tandon
  • Patent number: 5756165
    Abstract: Applicants have discovered that the speed of fiber manufacture can be substantially increased by employing a two-step curing process in which the fiber is drawn, coated and exposed to ultraviolet light on-line at high line speeds to effect a partial cure of the coating. After further cooling, the partially cured coating is fully cured by an on-reel exposure to ultraviolet light. The on-reel exposure can take place on the draw tower take-up reel as it is filing with fiber or it can take place off-line after the take-up reel has been filled and removed from the line. The on-reel exposure advantageously takes place either during filling the take-up reel, or during emptying the reel, so that each layer of fiber on the reel is exposed equally to the ultraviolet light. This method of UV illumination improves the energy efficiency in the second exposure by at least a factor of 10 to as much as a factor of 1000. The fiber primary coating pullout strength and mechanical modulus are enhanced.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: May 26, 1998
    Assignee: Lucent Technologies Inc.
    Inventors: Yussuf Sultan Ali, Darryl Leneir Brownlow, Alex Harris, Nicholas James Levinos, Robert Clark Moore, Lloyd Shepherd
  • Patent number: 4025866
    Abstract: An open loop digital frequency multiplier with a multiplied output synchonized to low frequency clock pulses. The system includes a multi-stage digital counter which provides a pulse output as a function of an integer divisor. The integer divisor and the timing or counting cycle of the counter are interrelated to the frequency of a clock input. The counting cycle is controlled by a one-shot multivibrator which, in turn, is driven by a reference frequency input.
    Type: Grant
    Filed: November 10, 1975
    Date of Patent: May 24, 1977
    Inventors: James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher, Robert Clark Moore