Having Coating Or Treating Means Patents (Class 65/529)
  • Publication number: 20150040615
    Abstract: An electrical discharge, suitable for heating optical fibers for processing, is made in a controlled partial vacuum, such that saturation of available ionizable gas molecules is reached. The workpiece temperature is thereby made to be a stably controlled function of the absolute air pressure and is insensitive to other conditions. A system and method accomplishing the foregoing are provided.
    Type: Application
    Filed: April 8, 2013
    Publication date: February 12, 2015
    Inventors: Robert G. Wiley, Brett Clark, John Lower, Jason Troyer, Clyde J. Troutman
  • Patent number: 8882960
    Abstract: An etchant is stored in a treating tank; a glass substrate is transported with transport rollers into the treating tank; the etchant is discharged from below the substrate to raise the substrate to a position above the transport rollers and below the surface of the etchant; the discharge of the etching liquid is stopped and the glass substrate is lowered to a position for contacting the transport rollers; the etchant is drained from the treating tank; and the glass substrate is unloaded with the transport rollers out of the treating tank. The disclosed method and apparatus can treat both front and back surfaces of the substrate uniformly.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: November 11, 2014
    Assignee: SCREEN Holdings Co., Ltd.
    Inventors: Norio Yoshikawa, Kazuo Jodai, Yukio Tomifuji, Shigeki Minami, Kazuto Ozaki
  • Patent number: 8731366
    Abstract: The first aspect of the instant claimed invention is a method of formulating radiation curable Supercoatings for application to an optical fiber used in a telecommunications network. A Multi-layer Film Drawdown Method useful in the Method of formulating radiation curable Supercoatings is also described and claimed. Single mode Optical fibers coated with specific radiation curable Supercoatings are also described and claimed.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: May 20, 2014
    Assignee: DSM IP Assets B.V.
    Inventors: Xiaosong Wu, Steven Robert Schmid, Timothy Edward Bishop, John Monroe Zimmerman, Wendell Wayne Cattron, Edward Joseph Murphy, Pratik Shah
  • Patent number: 8724956
    Abstract: The first aspect of the instant claimed invention is a method of formulating radiation curable Supercoatings for application to an optical fiber used in a telecommunications network. A Multi-layer Film Drawdown Method useful in the Method of formulating radiation curable Supercoatings is also described and claimed. Single mode Optical fibers coated with specific radiation curable Supercoatings are also described and claimed.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: May 13, 2014
    Assignee: DSM IP Assets B.V.
    Inventors: Xiaosong Wu, Steven Robert Schmid, Timothy Edward Bishop, John Monroe Zimmerman, Wendell Wayne Cattron, Edward Joseph Murphy, Pratik Shah
  • Publication number: 20130118208
    Abstract: This optical fiber manufacturing method includes: forming a bare optical fiber by drawing an optical fiber preform; forming an intermediate optical fiber by providing a coating layer, which is formed of resin, on the outer periphery of the bare optical fiber; performing primary curing of the coating layer which forms the intermediate optical fiber; pressing the outer periphery of the intermediate optical fiber; and performing secondary curing of the pressed coating layer of the intermediate optical fiber.
    Type: Application
    Filed: December 6, 2012
    Publication date: May 16, 2013
    Applicant: FUJIKURA LTD.
    Inventor: Fujikura Ltd.
  • Publication number: 20120285202
    Abstract: An isothermal, low pressure-based process of depositing material within a substrate has been developed, and is particularly useful in forming an optical fiber preform results in creating an extremely narrow reaction zone within which a more uniform and efficient deposition will occur. Sets of isothermal plasma operating conditions have been found that create a narrow deposition zone, assuring that the deposited material is clear glass rather than soot particles. The exhaust end of the tube is connected to a vacuum system which is in turn connected to a scrubber apparatus for removal and neutralization of reaction by-products. The operating conditions are selected such that the hot plasma does not transfer a substantial amount of heat to the substrate tube, where the presence of such heat has been found to result in vaporizing the reactant material (creating soot) and developing hot spots.
    Type: Application
    Filed: July 26, 2012
    Publication date: November 15, 2012
    Inventors: James W. Fleming, George J. Zydzik
  • Publication number: 20120167634
    Abstract: A system and method for winding at least one continuous strand of material (210) on a rotating support (212) to form a strand package or cake includes a rotatable traversing apparatus (216) for causing the at least one strand of material to reciprocate along a length of the rotating support (212) for even distribution in forming the package or cake. A plurality of strands can be wound simultaneously, the traversing apparatus having a form and operating orientation that generally maintains a parallel separation of the several strands while being wound on the support. The strand material may be, for example, glass, and a winding system may further include a source of glass strands, including a source of glass fibers (102) and a grouping mechanism (108, 208) for grouping respective pluralities of glass fibers into respective strands of glass fiber.
    Type: Application
    Filed: September 18, 2009
    Publication date: July 5, 2012
    Applicant: OCV Intellectual Capital, LLC
    Inventors: Dominique Font, Jean-Francois Blanchard, Pierre-Jacques Font
  • Patent number: 8201421
    Abstract: To obtain an optical component having excellent secondary optical nonlinear properties by irradiating a surface and/or inside of glass having at least one member selected from Ni, Fe, V, Cu, Cr and Mn as a heat source material for absorbing and converting a laser beam to heat, incorporated to a glass matrix comprising at least one glass-forming oxide-selected from SiO2, GeO2, B2O3, P2O5, TeO2, Ga2O3, V2O5, MoO3 and WO3 and at least one member selected from alkali metals, alkaline earth metals, rare earth elements and transition elements, with a laser beam with a wavelength to be absorbed by the heat source material, to convert the irradiated portion to a single crystal or a group of crystal grains comprising components contained in the glass matrix and not containing the heat source material, thereby to form a pattern.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: June 19, 2012
    Assignees: Asahi Glass Company, Limited, Nagaoka University of Technology
    Inventors: Takayuki Komatsu, Tsuyoshi Honma, Takumi Fujiwara, Yasuhiko Benino
  • Publication number: 20120106893
    Abstract: There is described herein a method and system for inscribing gratings in optical waveguides. The waveguides may be hydrogen-free, germanium-free, low germanium, low hydrogen, and a combination thereof. Such gratings written in hydrogen-free fibers are suitable for sensor applications in which the use of hydrogen for photosensitizing fibers is undesirable owing to their increased sensitivity to nuclear radiation. The grating are formed by at least one pulse having a wavelength comprised between about 203 nm and about 240 nm. The laser source may be a Continuous Wave (CW) laser source or a pulsed laser source generating at least one pulse having a width in the order of nanoseconds (109).
    Type: Application
    Filed: November 1, 2011
    Publication date: May 3, 2012
    Inventors: Raman KASHYAP, Mathieu GAGNE
  • Patent number: 8137094
    Abstract: A process for manufacturing a composite yarn including continuous glass filaments intermingled with continuous organic thermoplastic filaments and an apparatus for implementing the process. The continuous glass filaments come from a bushing and are separated into plural sheets. The continuous organic thermoplastic filaments come from a spinning head and are separated into plural sheets. The thermoplastic filaments are thrown into the glass filaments so as to mingle them, in a ratio of at least one sheet of thermoplastic filaments in each sheet of glass filaments, the mingled filaments then being gathered into at least one composite yarn.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: March 20, 2012
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Philippe Boissonnat, Daniel Richard
  • Patent number: 8001808
    Abstract: A burner for a vapor deposition process has a cylindrical central gas passage and a plurality of external gas passages surrounding the central gas passage. The burner has a back block defining an initial section of the gas passages, a face block defining a final section of the gas passages and a manifold plate positioned between the back block and the face block and defining an intermediate section of the external gas passages; the face block, the manifold plate and the back block have inner integral walls that define respective sections of the central gas passage.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: August 23, 2011
    Assignee: Prysmian Cavi E Sistemi Energia S.R.L.
    Inventors: Antonio Mileo, Andrea Demergazzi, Sergio Pellegrini
  • Patent number: 7963124
    Abstract: A method for producing an optical fiber that includes a method for producing an optical fiber, said method comprising: (i) drawing a bare optical fiber from a preform along a first pathway at a rate of at least 10 m/sec; (ii) contacting said bare optical fiber with a region of fluid in a fluid bearing and redirecting said bare optical fiber along a second pathway as said bare optical fiber is drawn across said region of fluid cushion; (iii) coating the bare optical fiber; and (iv) irradiating said coated fiber in at least one irradiation zone to at least partially cure said coating, while subjecting the optical fiber to UV light.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: June 21, 2011
    Assignee: Corning Incorporated
    Inventors: Andrey V Filippov, Bruce Warren Reding, Bradley Kent Shepard, David Andrew Tucker
  • Patent number: 7946137
    Abstract: A method of optical fiber manufacture involves the writing of a grating on the fiber using a laser. A first laser beam is directed on a first locality of the fiber having a circumference. A second laser beam is then directed on a second locality circumferentially displaced from the first locality. The first laser beam may be the second laser beam. In this way, a grating is formed on the fiber. The fiber may have a core and a cladding layer. The fiber may also comprise two gratings to form an interferometer.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: May 24, 2011
    Assignee: United Technologies Corporation
    Inventors: John A. Benda, Aristotle Parasco
  • Publication number: 20110067451
    Abstract: An isothermal, low pressure-based process of depositing material within a substrate has been developed and results in creating an extremely narrow reaction zone within which a more uniform and efficient deposition will occur. Sets of isothermal plasma operating conditions have been found that create a narrow deposition zone, assuring that the deposited material is clear glass rather than soot particles. The chemical delivery system, in one arrangement, utilizes rods of solid phase source material (which may otherwise be difficult to obtain in gaseous form). The operating conditions are selected such that the hot plasma does not transfer a substantial amount of heat to the substrate tube, where the presence of such heat has been found to result in vaporizing the reactant material (creating soot) and developing hot spots.
    Type: Application
    Filed: September 27, 2010
    Publication date: March 24, 2011
    Applicant: OFS FITEL LLC
    Inventors: James Fleming, George Zydzik
  • Publication number: 20110023549
    Abstract: A method for manufacturing a primary preform for optical fibres using an internal vapour deposition process including the steps of providing a substrate tube having supply and discharge sides, surrounding at least part of the tube by a furnace, supplying glass-forming gases to the interior of the tube via the supply side, creating a reaction zone with conditions such that deposition of glass will take place on the inner surface of the tube, and moving the reaction zone back and forth along the length of the tube between reversal points near the supply and discharge sides to form one or more preform layers on the inner surface of the tube, wherein both reversal points are surrounded by the furnace.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 3, 2011
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Johannes Antoon Hartsuiker, Igor Milicevic, Mattheus Jacobus Nicolaas Van Stralen, Eric Aloysius Kuijpers
  • Patent number: 7866188
    Abstract: The present invention relates to an apparatus for carrying out a PCVD deposition process, wherein one or more doped or undoped layers are coated onto the interior of a glass substrate tube, which apparatus comprises an applicator having an inner and an outer wall and a microwave guide which opens into the applicator, which applicator extends around a cylindrical axis and which is provided with a passage adjacent to the inner wall, through which the microwaves can exit, over which cylindrical axis the substrate tube can be positioned, and wherein at least one choke of annular shape having a length l and a width w is centred around the cylindrical axis within the applicator.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: January 11, 2011
    Assignee: Draka Comteq, B.V.
    Inventors: Mattheus Jacobus Nicolaas Van Stralen, Rob Hubertus Matheus Deckers
  • Publication number: 20100319405
    Abstract: An optical fiber manufacturing device includes a bare optical fiber-forming unit that forms a bare optical fiber by pulling an optical fiber preform; a coating unit that forms an optical fiber by coating the bare optical fiber outputted from the bare optical fiber-forming unit with a coating layer; a first direction-converter, which is a solid body that comes into contact with the optical fiber outputted from the coating unit and thereby first changing its traveling direction; and a winder that winds the optical fiber obtained from the first direction-converter, in which: the first direction-converter is a rotating body having a circumferential face that contacts with the optical fiber and is formed around an axis of rotation thereof; and the contact angle, centered on the axis of rotation, between this rotating body and the optical fiber is in the range of 10° to 80°.
    Type: Application
    Filed: December 24, 2008
    Publication date: December 23, 2010
    Applicant: Fujikura Ltd.
    Inventor: Kenji Okada
  • Patent number: 7832235
    Abstract: An apparatus for winding a fiber strand onto a former, wherein there is provided a separating means for fixing and separating the fiber strand at the end of an operation of winding on a finish-wound first former and for bringing the fixed fiber-strand end to a second former to be wound in order to begin a new winding operation. At least one thread buffer for temporary storage of a fiber-strand portion between the end of one winding operation and the beginning of a new winding operation is disposed upstream from the separating means in the feed direction.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: November 16, 2010
    Assignee: Eha Spezialmaschinenbau GmbH
    Inventors: Mike Neubert, Johannes Weg
  • Patent number: 7743629
    Abstract: Provided is a process and apparatus for applying a liquid binder to fibers. The process involves introducing heat curable liquid binder onto moving fibers by atomizing the liquid binder and applying the atomized binder from a point within the moving column of fibers. Better binder efficiency and a more efficient overall process is realized.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: June 29, 2010
    Assignee: Johns Manville
    Inventors: Philip Francis Miele, Don August Forte, Roy V. Pogue
  • Publication number: 20100095707
    Abstract: Methods and devices are provided for fabricating waveguides. Some such methods involve forming at least a portion of the waveguide using an embossing process for shaping a substrate and/or other components. Some implementations provide processes for making waveguide features by omitting what may previously have been regarded as essential steps in forming waveguides via a semiconductor fabrication process. Some implementations provide processes of forming waveguide features by deliberately causing what would heretofore have been regarded as defects in a semiconductor fabrication process. Some such methods and devices can produce waveguides at a substantially lower cost than was heretofore possible.
    Type: Application
    Filed: October 21, 2008
    Publication date: April 22, 2010
    Inventor: Clarence Chui
  • Publication number: 20090165502
    Abstract: A method for manufacturing an optical fiber preform and an optical fiber preform apparatus are provided which can reduce hydroxyl groups in an optical fiber preform to a sufficient level without requiring any special equipment or operating conditions. When an optical fiber preform is manufactured by the vapor-phase deposition method, the dehydrating treatment is performed on a porous core preform that is obtained by depositing glass microparticles. In this treatment, a dehydrating agent is supplied to a dehydration apparatus through a feeding pipe and a main feeding pipe made of a material having a water permeance factor of 1.0×10?11 g·cm/cm2·s·cmHg or less, thereby manufacturing an optical fiber preform.
    Type: Application
    Filed: March 5, 2009
    Publication date: July 2, 2009
    Applicant: Fujikura Ltd
    Inventors: Manabu SAITOU, Shunichirou Hirafune
  • Publication number: 20090090136
    Abstract: A method of molding low-temperature glass into a preform for formation by drawing into glass fiber, especially for transmission of mid-IR, involves casting a cladding glass into a mold cavity in the shape of the desired preform to form a cladding layer, and forming a glass core within the cladding layer, wherein the molten cladding glass is drained from the bottom of the mold cavity, forming an annular coating of cladding glass as an annular layer, and the core glass is quickly added within the annular cladding layer to form the glass core with the cladding layer thereabout.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 9, 2009
    Applicant: INFRARED FOCAL SYSTEMS, INC.
    Inventor: Dahn C. Tran
  • Publication number: 20080193090
    Abstract: An optical cable is manufactured in a single continuous process starting directly from at least an optical perform, by means of a fiber/cable integrated manufacturing line (50) including a fiber(s) drawing assembly (100) for the production of one or more optical fibers from respective optical preforms, and a cabling assembly (200) for producing the optical cable from the optical fiber(s), the cabling assembly comprising a fiber buffering assembly (200a) for the application of a loose or tight coating to the optical fiber(s), and a strengthening and sheathing sub-assembly (200b) for applying one or more reinforcing and protective layers to the buffered optical fiber(s).
    Type: Application
    Filed: May 24, 2004
    Publication date: August 14, 2008
    Inventors: Kevin Riddett, Alessandro Ginocchio, Stefano Giacomo Roba
  • Patent number: 7354541
    Abstract: The subject of the invention is a unit for manufacturing felts (6) which are formed from crosslinked mineral fibers, comprising at least one pair of conveyors formed by a lower conveyor (11) and an upper conveyor (12) which are placed opposite each other and intended to compress said felt (6) in at least one direction, a means (13) for heat treating the felt (6) after it has passed through the conveyors (11, 12) comprising at least one means (14) placed between the conveyors (11, 12) and the heat treatment means (13), intended to prevent decompression of the felt (6) in this region, said means comprising at least one cam (14) having a profile suitable for keeping a constant and minimum distance between the conveyors (11, 12) and the heat treatment means (13), and in that at least one of the conveyors is rigidly connected to one element of the heat treatment means (13).
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: April 8, 2008
    Assignee: Saint-Gobain Isover
    Inventors: Francois Bouquet, Yannick Blandin, Alain Debouzie
  • Patent number: 7100531
    Abstract: An installation for cutting and applying reinforcement fibers (2), with at least two cutting modules (1), each one of which fed with at least a cord of reinforcement fibers (4) and arranged in order to move on a top plane with respect to a working surface (3), where: at least each one of two of the cutting modules (1) is actuated by an independent motor (7), each independent motor (7) for actuation of the cutting of the fibers is controlled selectively by a control device (8); and at least two of the cutting modules (1) are arranged on a shared frame (9) that supports them during the cutting process.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: September 5, 2006
    Assignee: Grupo Antolin Ingenieria, S.A.
    Inventors: Miguel Angel Grande, Anselmo Ariznavarreta
  • Patent number: 7000435
    Abstract: A roll coater for placing binder on the fibers prior to being wound around a rotating drawing drum. The drawing drum draws fibers out of orifices in the bottom of a slowly reciprocating furnace. The fibers form a mat on the drawing drum that is later removed and expanded. The roll coater includes a graphite or other material coating drum that rotates in a bath of liquid binder and/or wetting agents, and reciprocates with the furnace. The fibers scrape over the surface of the coating drum after being formed but before winding around the drawing drum. The binder and/or wetting agent picked up on the surface of the coating drum coats the fibers with binder and/or wetting agent. Liquid binder and/or wetting agent is replenished in the bath in which the coating drum is partially submerged by a float, sensor, pump and large container of binder/wetting agent.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: February 21, 2006
    Assignee: Hollinee, LLC
    Inventors: Rodney R. Wilkins, Jack Compston
  • Patent number: 6958096
    Abstract: A fiber coating applicator includes a chamber and a cup positioned over the chamber. The cup is connected to the chamber by an entrance aperture. The chamber includes an exit aperture opposite the entrance aperture. The cup, entrance aperture, chamber, and exit aperture define a pathway for a fiber, such as an optical fiber, to be coated. The chamber further includes an input port for pumping a coating material into the chamber. The entrance aperture is dimensioned such that as a fiber travels along the pathway and coating material is pumped into the chamber, coating material travels upward through the entrance aperture around the fiber into the cup, the upward flow of coating material being restricted by the fiber and entrance aperture such that there is a hydrostatic pressure in the chamber. The exit aperture is dimensioned to shape coating material around a fiber traveling along the pathway.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: October 25, 2005
    Assignee: Furukawa Electric North America, Inc.
    Inventor: Eric A. Lindholm
  • Patent number: 6923025
    Abstract: The invention concerns a device (1) for sintering of a porous mold body (2) in a gas-tight chamber (3), with the mold body (2) hanging loose from a link chain (7) so that it can be fed continuously to a heating zone (5). In the area of the upper boiler (10), the traction direction of the link chain (7) is reversed by a deviation wheel (11). The tensile force is transmitted via a traction rope (13) that can be taken up on a take-up reel (14), such take-up reel (14) being driven by a drive (16) arranged outside the chamber (3). A drive shaft (15) for the take-up reel (14) provides for easy sealing of the duct (18) towards the chamber (3), because only a rotation and not a simultaneous axial displacement is required for the hoisting movement, and moreover, because the duct (18) is arranged at a spatial distance from the heating zone (5).
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: August 2, 2005
    Assignee: Heraeus Tenevo AG
    Inventor: Uwe Christiansen
  • Patent number: 6859600
    Abstract: A coated optical fiber includes a fiber coating having an unblended primary portion on the optical fiber, an unblended secondary portion, and a blended portion intermediate the unblended primary and secondary portions. The thickness of the blended portion is greater than or equal to about 10% but less than 100% of the thickness of the fiber coating. An optical fiber ribbon includes a ribbon matrix similarly having an unblended primary portion, an unblended secondary portion, and a blended portion between the unblended primary portion and unblended secondary portion. A method for fabricating a coated optical fiber or optical fiber ribbon includes applying a primary portion material to the optical fiber or plurality of coated optical fibers, and applying a secondary portion material in a manner selected to provide a blend of the primary portion material and the secondary portion material. An applicator apparatus includes means for performing the described steps.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: February 22, 2005
    Assignee: Alcatel
    Inventors: Igor V. Khudyakov, Nicholas V. Nechitailo
  • Publication number: 20040206130
    Abstract: A roll coater for placing binder on the fibers prior to being wound around a rotating drawing drum. The drawing drum draws fibers out of orifices in the bottom of a slowly reciprocating furnace. The fibers form a mat on the drawing drum that is later removed and expanded. The roll coater includes a graphite or other material coating drum that rotates in a bath of liquid binder and/or wetting agents, and reciprocates with the furnace. The fibers scrape over the surface of the coating drum after being formed but before winding around the drawing drum. The binder and/or wetting agent picked up on the surface of the coating drum coats the fibers with binder and/or wetting agent. Liquid binder and/or wetting agent is replenished in the bath in which the coating drum is partially submerged by a float, sensor, pump and large container of binder/wetting agent.
    Type: Application
    Filed: May 7, 2004
    Publication date: October 21, 2004
    Inventors: Rodney R. Wilkins, Jack Compston
  • Patent number: 6779365
    Abstract: A roll coater for placing binder on the fibers prior to being wound around a rotating drawing drum. The drawing drum draws fibers out of orifices in the bottom of a slowly reciprocating furnace. The fibers form a mat on the drawing drum that is later removed and expanded. The roll coater includes a graphite or other material coating drum that rotates in a bath of liquid binder and/or wetting agents, and reciprocates with the furnace. The fibers scrape over the surface of the coating drum after being formed but before winding around the drawing drum. The binder and/or wetting agent picked up on the surface of the coating drum coats the fibers with binder and/or wetting agent. Liquid binder and/or wetting agent is replenished in the bath in which the coating drum is partially submerged by a float, sensor, pump and large container of binder/wetting agent.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: August 24, 2004
    Assignee: Hollinee L.L.C.
    Inventors: Rodney R. Wilkins, Jack Compston
  • Patent number: 6769276
    Abstract: Apparatus for shaping a selected end region of a hollow cylindrical glass tube includes an internal mold placed within the selected end region for supporting the walls of the tube and controlling the shape of the internal surface of selected end region of the tube, during the period of time heat is applied to the tube and the tube is being shaped. In one embodiment the internal mold has a variable configuration and may be selectively set to an extended (open) configuration or to a collapsed (closed) configuration. With the internal mold set to its extended configuration, sufficient heat may be applied to the selected end region to render it malleable. Then, compression forces may be applied to the exterior surface of the tube to press the inner surface of the selected end region of the tube against the outer surface of the internal mold, causing the inner surface of the selected end region to conform to the outer surface of the internal mold.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: August 3, 2004
    Assignee: Avaya Technology Corp.
    Inventors: Jason A. Kay, David S. Kerr, Peter M. Mueller, Ivan Pawlenko, Larry Samson
  • Patent number: 6729163
    Abstract: Disclosed is a high efficiency burner and an apparatus for over-cladding an optical fiber pre-form using the same. The high efficiency burner heating an optical fiber pre-form includes burner covers, burner bodies arranged between the burner covers, and fuel dischargers arranged in at least two rows between the burner bodies, and divided by a partition, respectively.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: May 4, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Seong Yang, Mun-Hyun Do
  • Patent number: 6681600
    Abstract: A system and method for removing a predetermined length of coating from a fiber optic cable. The system includes a chemical bath, and a system for forming a loop in a fiber optic cable. The loop forming system includes a vertical column, and a slide arm having a guide collar portion slidably provided on the vertical column, and a distal portion extending away from and integral with the guide collar portion. The loop forming system further includes a mount shaft extending from and connected to the distal portion of the slide arm, the mount shaft having clamps and a tensioning spring for retaining portions of the fiber optic cable. A push rod movably extends through the mount shaft, and connects to a fiber optic cable loop former. The fiber optic cable loop former engages a surface of the mount shaft and is pushed away therefrom by the push rod during formation of the loop in the fiber optic cable.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: January 27, 2004
    Assignee: Ciena Corporation
    Inventors: David C. Mitchell, Gary Kles, Thomas R. Boyer
  • Publication number: 20030221458
    Abstract: A neutralization system for controlling the pH of the washwater used to clean and maintain polyacrylic bound glass forming equipment. The neutralization system introduces a base solution to a washwater solution when the pH of the washwater solution contained in a closed loop washwater recovery system falls below about 8.5, thereby substantially reducing the corrosion rate of the components of the equipment associated with acidic polyacrylic acid binder, maleic acid cobinder or maleic anhydride cobinder and washwater solution. A closed-loop hoodwall washwater recovery system may also be introduced in addition to the neutralization system that allows for the recovery and reuse of polyacrylic acid binder and maleic acid cobinder or maleic anhydride cobinder with a minimal amount of base solution, thereby minimizing degradation of insulation properties of polyacylic acid bound glass fiber products.
    Type: Application
    Filed: December 31, 2002
    Publication date: December 4, 2003
    Inventors: Harry B. Cline, William E. Downey, Liang Chen, Kathleen M. Bullock, Kevin S. Guigley, Yadollah Delaviz, William R. Cooper, Bobby R. Gibson, Michael P. Lewis, Michael V. Mager
  • Publication number: 20030221457
    Abstract: A neutralization system for controlling the pH of the washwater used to clean and maintain polyacrylic bound glass forming equipment. The neutralization system introduces a base solution to a washwater solution when the pH of the washwater solution contained in a closed loop washwater recovery system falls below approximately 8.0, thereby substantially reducing the corrosion rate of the components of the equipment associated with acidic polyacrylic acid binder and washwater solution. A closed-loop hoodwall washwater recovery system may also be introduced in addition to the neutralization system that allows for the recovery and reuse of polyacrylic acid binder with a minimal amount of base solution, thereby minimizing degradation of insulation properties of polyacylic acid bound glass fiber products.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 4, 2003
    Inventors: Harry B. Cline, William E. Downey, Liang Chen, William R. Cooper
  • Patent number: 6647748
    Abstract: A device for continuously twisting an optical fiber, which can add a sufficient twist to an optical fiber, is provided. Reciprocating rollers reciprocate so that the moving direction would be opposite each other along a center axis of rotation. The optical fiber passes through a gap between the reciprocating rollers and runs in contact with the outer circumferential surface of respective reciprocating rollers in order. Reciprocation of the reciprocating rollers adds a twist to the optical fiber. When &phgr; is a contacting angle between the optical fiber and the reciprocating rollers, F is maximum static friction of the optical fiber against the outer circumferential surface of the reciprocating rollers, and T is tension of the optical fiber, the coefficient of friction &mgr; between the optical fiber and the outer circumferential surface of the reciprocating rollers is lead from an operational formula of &mgr;=(1/&phgr;)·ln(F/T).
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: November 18, 2003
    Assignee: The Furukawa Electric Co., Ltd.
    Inventor: Nobuaki Orita
  • Patent number: 6630029
    Abstract: In a method of coating a CMC fiber, the fiber is passed through a reaction zone along a path substantially parallel to a longitudinal axis of the zone, a flow of fiber coating reactant is passed though the reaction zone, at least a portion of the flow of reactant is disrupted from a path substantially parallel to the fiber path to create a mixing flow adjacent the fiber. A coating reactor includes a reactor chamber to accommodate a fiber passing along a path substantially parallel to a longitudinal axis of the chamber and a flow of fiber coating reactant. The reactor chamber further includes a flow disrupter located within the reactor chamber to disrupt at least a portion of the flow of reactant from a path substantially parallel to the fiber path to create a mixing flow adjacent the fiber.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: October 7, 2003
    Assignee: General Electric Company
    Inventor: Milivoj Konstantin Brun
  • Publication number: 20030172683
    Abstract: A fiber glass roving comprises a plurality of ends from a plurality of direct draw packages, each direct draw package having a single end. Ends from a plurality of direct draw packages may be combined to form a roving at a point of use, such as just prior to chopping the roving in a chopping gun. Assembled rovings may also be formed by winding a plurality of ends from a plurality of direct draw packages, each direct draw package having a single end, into an assembled roving package.
    Type: Application
    Filed: February 11, 2003
    Publication date: September 18, 2003
    Inventors: Chi Tang, Paul A. Westbrook, Christopher G. Cross, Pu Gu, James C. Peters, John L. Sarratt
  • Patent number: 6604388
    Abstract: A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low numerical aperture, low core attenuation, and high pumping power absorption. The high concentrations of rare earth dopant material are accomplished through either the “hybrid vapor processing” (HVP) method or a “hybrid liquid processing” (HLP) method, each capable of being practiced in combination or independently of one another. The HVP method involves the vaporization of a rare earth halogen by the exposure thereof to a sufficiently elevated temperature, independently, or contemporaneously with the transport of the resultant rare earth halogen laden vapor, into a glass forming oxidation reaction zone on a flowing stream of essentially an unreactive inert gas, such as helium.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: August 12, 2003
    Assignee: JDS Uniphase Corporation
    Inventors: Ying-Hua Zhang, Brian M. Laliberte, Ray F. Robinson
  • Patent number: 6598425
    Abstract: A method and apparatus for manufacturing optical components. A burner generates soot, and a surface area collector collects the soot. The burner is disposed such that the soot collected within the surface area collector is substantially not reheated by subsequently deposited soot. Magnetic forces direct the soot to desired location(s) within the surface area collector. The surface area collector operates at relatively low temperatures sufficient to retain rather volatile substances, such as fluorine, in the soot.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: July 29, 2003
    Assignee: Corning Incorporated
    Inventors: Daniel W. Hawtof, Joseph M. Whalen
  • Publication number: 20030079504
    Abstract: A method of manufacturing an optical waveguide perform includes exposing a soot preform to an atmosphere including a chlorine-containing compound and thereby doping the soot preform with chlorine, wherein the absolute pressure of the atmosphere is greater than about 1.013×102 kPa. An apparatus for manufacturing an optical waveguide preform using a soot preform includes a furnace defining a chamber adapted to contain the soot preform and including a heating device operable to heat the chamber. A fluid control system is operable to provide an atmosphere including a chlorine-containing compound in the chamber at an absolute pressure of greater than about 1.013×102 kPa.
    Type: Application
    Filed: October 26, 2001
    Publication date: May 1, 2003
    Inventors: Heather D. Boek, Pushkar Tandon
  • Patent number: 6547920
    Abstract: An apparatus for forming a loop in a filament comprising a first wall having a first guide slot formed therein and a second wall having a second guide slot formed therein coplanar and parallel to the first guide slot. The first wall is opposite the second wall and each of the guide slots has opposing ends. A first gripper holds a filament at a first location. The first gripper is mounted from the first wall to the second wall at an end of each of the first guide slot and the second guide slot. The apparatus also includes a movable gripper to hold the filament at a second location. The movable gripper has a separation from the first gripper and is mounted from the first wall to the second wall adjacent to the other end of each of the first guide slot and the second guide slot for movement towards the first gripper to reduce the separation between them. This produces a loop of filament between the first gripper and the moveable gripper.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: April 15, 2003
    Assignee: 3M Innovative Properties
    Inventors: Anthony William Gatica, Peter Henry Bruhn
  • Patent number: 6510711
    Abstract: Disclosed is an apparatus and method for sintering an over-jacketing tube in the zone sintering phase of an optical fiber preform fabrication process using a sol-gel process. The sintering apparatus includes: a processing tube; a gel tube assembly connected to a top rotation cap positioned at the top opening of the processing tube and being rotated at a predetermined rate, a ceramic pin extending downwardly from the center axis of the rotation cap, and a gel tube suspended from the bottom of the ceramic pin and suspended along the same axle of the processing tube; and a movable furnace initially positioned at the bottom of the processing tube and translating in a vertical direction along the processing tube for thermally treating the gel tube.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: January 28, 2003
    Assignee: Samsung Electronics Co., LTD
    Inventors: Young-Sik Yoon, Young-Min Baik
  • Publication number: 20030000258
    Abstract: The invention concerns a system for making clipped thermoplastic yarns, such as chipped glass yarns comprising at least a die (1) co-operating with at least a cutting machine (7) located in the extension of each other, means (3) for sizing the yarns (5) and/or filaments (2) coming from the die (1), at least one return means (4), a floor. The invention is characterised in that the system further comprises means (74) for displacing and positioning the cutting machine (7) in at least two positions: the first beneath said floor (9), the second above said floor (9), and a first opening (10) in the floor (9) through which the cutting machine (7) is moved.
    Type: Application
    Filed: July 15, 2002
    Publication date: January 2, 2003
    Inventors: Dominique Font, Henri Prevosto, Laurent Berthelon
  • Publication number: 20020170319
    Abstract: A roll coater for placing binder on the fibers prior to being wound around a rotating drawing drum. The drawing drum draws fibers out of orifices in the bottom of a slowly reciprocating furnace. The fibers form a mat on the drawing drum that is later removed and expanded. The roll coater includes a graphite or other material coating drum that rotates in a bath of liquid binder and/or wetting agents, and reciprocates with the furnace. The fibers scrape over the surface of the coating drum after being formed but before winding around the drawing drum. The binder and/or wetting agent picked up on the surface of the coating drum coats the fibers with binder and/or wetting agent. Liquid binder and/or wetting agent is replenished in the bath in which the coating drum is partially submerged by a float, sensor, pump and large container of binder/wetting agent.
    Type: Application
    Filed: May 16, 2001
    Publication date: November 21, 2002
    Inventors: Rodney R. Wilkins, Jack Compston
  • Publication number: 20020166345
    Abstract: There is provided an optical-fiber resin coating device which can uniformly coat resin on an optical fiber at a high fiber-pulling velocity while preventing thickness deviation, outer-diameter variation and breaking of the optical fiber. The optical-fiber resin coating device includes a coating die (2N) with a coating die hole (6N) having at least a taper hole portion (6Na) and a land hole portion (6Nb), a nipple (1) having a nipple hole (5), and at least one intermediate die (2A) disposed between the coating die (2N) and the nipple (1) and having an intermediate die hole (6A). The inner diameter of the intermediate die hole (6A) of the intermediate die (2A) is smaller than the inner diameter of the inlet of the taper hole portion (6Na) of the coating die (2N) and equal to 1.
    Type: Application
    Filed: February 22, 2002
    Publication date: November 14, 2002
    Applicant: The Furukawa Electric Co, Ltd.
    Inventors: Yasuhiro Naka, Sinpei Todo, Nobuaki Orita
  • Publication number: 20020116957
    Abstract: In accordance with the invention, a preform from which fiber optics are drawn is fabricated by supplying reactants and gas vapors to the preform and by using two opposing forces to control the movement of a heat source supplying heat to the preform. The two forces function to reduce any hesitation or backlash in the movement of the heat source along predetermined portions of the preform to enable uniform layers to be formed within the preform.
    Type: Application
    Filed: October 25, 1999
    Publication date: August 29, 2002
    Inventors: IVAN PAWLENKO, PETER MICHAEL MUELLER
  • Patent number: 6405566
    Abstract: A method and device for providing an optical fiber secondary preform by collapsing an over-cladding tube on an optical fiber primary preform is disclosed in the present invention. The device for over cladding the optical fiber primary preform includes a hand bar as a first supporter for supporting the optical fiber primary preform, which hand bar has a sealing-up part of the over-cladding tube on an outer diameter part thereof and also includes a supporting handle tube as a second supporter for supporting the over-cladding tube, which the purity of the supporting handle tube is different from that of the over-cladding tube. Also the supporting handle tube includes a ring to make it equal two centers of the optical fiber primary preform and the over-cladding tube.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: June 18, 2002
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Seung-Hun Oh
  • Patent number: 6338259
    Abstract: An apparatus and process for cooling a quartz tube used in fabrication of an optical fiber preform by modified chemical vapor deposition. The apparatus has a nozzle ring supplied with a coolant. The nozzle ring has at least two vent sections that are be separatable for detaching the quartz tube from a lathe during processing, and a plurality of vents formed along the inside of the two vent sections for ejecting the coolant.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: January 15, 2002
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Jin-Seong Yang