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| Number | Title | Issue Date |
| 7823419 | Optical fiber drawing furnace with gas flow tubes A furnace for drawing an optical fiber includes a body having an upper and lower openings for supplying a preform and discharging a drawn optical fiber, a heating unit installed in the body for receiving and melting the preform, an atmosphere blocking tube installed... | 11/02/2010 |
| 7153115 | Optical fiber cooling tube An optical fiber cooling tube includes an internal cavity through which an optical fiber passes and a set of injection passages that are distributed along the tube, open into the cavity, and are oriented in a contraflow direction relative to the direction in which t... | 12/26/2006 |
| 7137279 | Cap assembly and optical fiber cooling process A cap assembly for collecting cooling gas from a coolant chamber tube is disclosed. The cap assembly having connecting means and outlet means extending from its side walls being generally shaped and sized for detachable mounting on the body of the cooling gas chambe... | 11/21/2006 |
| 6845637 | Apparatus to improve degree of cure for ultraviolet curable optical fiber coating by actively removing heat from the coating during irradiation An apparatus and method for curing a coating applied to an optical fiber. A water-jacketed UV lamp is provided adjacent a first reflector. An optical fiber is drawn between a second reflector opposite the first reflector and at least one quartz plate, while a cross ... | 01/25/2005 |
| 6715323 | Method and apparatus for cooling optical fibers The present invention relates to a method and apparatus for cooling an optical fiber during the drawing process of said fiber. In particular the present method for cooling an optical fiber comprises flowing a cooling gas onto the optical fiber wherein the flo... | 04/06/2004 |
| 6644069 | Method of heating and processing an end of an optical fiber preform and apparatus for heating and processing an end of an optical fiber preform An end heating and processing method of an optical fiber preform. In this method, an optical fiber preform is processed by heating and melting an end of a vitrified optical fiber preform including a core portion and a cladding portion formed on an outer c... | 11/11/2003 |
| 6546758 | Multi-chamber fiber cooling apparatus A method and device for reducing the temperature of an optical fiber wherein a housing body is provided a plurality of inner cooling chambers which are-, partitioned from each other by a plurality of partition walls. An axial through hole extends through ... | 04/15/2003 |
| 6474109 | Device and method for drawing optical fibers from a preform The invention relates to a device for drawing optical fibers from a preform, comprising: a furnace comprising a tube for heating one end of said preform to the drawing temperature thereof, which tube comprises: i) a central tube, ii) an upper extension tube co... | 11/05/2002 |
| 6370920 | Apparatus to improve degree of cure for ultraviolet curable optical fiber coating by actively removing heat from the coating during irradiation An apparatus and method for curing a coating applied to an optical fiber. A water-jacketed UV lamp is provided adjacent a first reflector. An optical fiber is drawn between a second reflector opposite the first reflector and at least one quartz plate, whi... | 04/16/2002 |
| 6338259 | Cooling apparatus used in fabrication of optical fiber preform 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 s... | 01/15/2002 |
| 6321573 | Process and apparatus for manufacturing a porous SiO2 preform In a known process for the manufacture of an elongated porous SiO2 preform, SiO2 particles are deposited on the mantle surface of a cylindrical carrier rotating about its longitudinal axis. The SiO2 particles are formed by... | 11/27/2001 |
| 6253575 | Helium recycling for optical fiber manufacturing Helium recycling for optical fiber manufacturing in which consolidation process helium is recycled either directly for use in consolidation at high purity or recycled at lower purity adequate for usage in draw or other processes having a lower helium pari... | 07/03/2001 |
| 6029476 | Method and apparatus for manufacturing an optical fiber provided with a hermetic coating A method and apparatus for manufacturing optical fibers provided with hermetic coatings, wherein the bare fiber made from a heated preform advances through a stream of reactive gaseous medium which flows at a constant speed in the direction of advance of ... | 02/29/2000 |
| 5897682 | Apparatus for cooling an optical fiber to be resin coated A coated optical fiber is produced by the steps of cooling through a cooling assembly an optical fiber obtained by drawing, heating and spinning an optical fiber base material and thereafter coating the optical fiber with a resin wherein a gas mixture inc... | 04/27/1999 |
| 5897681 | Method of drawing an optical fiber To draw an optical fiber (10) from one end of a glass preform (9) which is heated to above the glass softening temperature at least in that area, a gas (21) flows around the preform (9) into a furnace space (16) during the drawing process and subsequent f... | 04/27/1999 |
| 5637130 | Method and furnace for drawing optical fibers A furnace and method for drawing an optical fiber is provided. The furnace included a furnace core chamber in which a preform is inserted into the chamber through the upper end thereof and a drawn optical fiber is pulled out of the chamber through an open... | 06/10/1997 |
| 5568728 | Filament cooler A filament cooler suitable for cooling freshly drawn optical fibre preparatory for being coated with a protective plastics coating has a water-cooled body member provided with a through hole opening out abruptly into a succession of spherical chambers in ... | 10/29/1996 |
| 5328493 | Apparatus for manufacturing a glass and organic composite strand, including a blowing device Drawing, from a first installation, organic filaments in the form of one or more layers which converge toward a same point, and drawing, from a second installation, glass filaments which are joined together to form at least one strand. Guiding structure i... | 07/12/1994 |
| 5296013 | Process and apparatus for the continuous production of mineral wool nonwovens A process and apparatus for the continuous production of mineral wool nonwovens in which the objective is to provide a process and an apparatus for the continuous production of mineral wool nonwovens, by means of which a stable flow pattern is created in ... | 03/22/1994 |
| 5002598 | Process of making multifilament glass strand The application discloses an apparatus and a process for the manufacture of continuous fibers by mechanical attenuation. It is especially useful in obtaining a strand composed of a mixture of filaments of differing cross sections in constant and definite ... | 03/26/1991 |
| 4966615 | Apparatus for cooling an optical fiber A method of and an apparatus for cooling an optical fibre drawn from a heated glass blank by passing the fibre (3) through a cooling pipe (9) in which a cooling gas (A) flows in the axial direction of the fibre around it. In order to reduce the consumptio... | 10/30/1990 |
| 4643750 | Method and apparatus for producing glass fibers This invention pertains to a method and apparatus for forming glass fibers by flowing fine streams of glass from closely spaced orifices in a feeder plate while directing a cooling gas upwardly to promote separation of the streams of glass and eliminate t... | 02/17/1987 |
| 4482370 | Method and apparatus for forming glass fibers A glass fiber-forming feeder having a bottom wall having a network of internal passageways interconnecting the field of orifices extending therethrough, and a method for producing such bottom walls is disclosed.... | 11/13/1984 |
| 4473387 | Fiberizing apparatus intended for the manufacture of continuous glass fibers Apparatus for the manufacture of thermoplastic mineral fibers is disclosed. A bushing base is formed by a flat plate in which a multitude of conduits are arranged. The upper ends of the conduits open toward the inside of the bushing and their lower ends toward... | 09/25/1984 |
| 4469499 | Method and apparatus for the manufacture of fibers A process and apparatus is disclosed for forming fibers from attenuable materials, such as molten glass, by attenuating streams of glass from the bottom of a bushing wherein the bottom has downwardly presented wall portions at upper and lower levels. Acco... | 09/04/1984 |
| 4437869 | Method and apparatus for multifilament glass strand The application discloses an apparatus and a process for the manufacture of continuous fibers by mechanical attenuation. It is especially useful in obtaining a strand composed of a mixture of filaments of differing cross sections in constant and definite ... | 03/20/1984 |
| 4398933 | Method and apparatus for the manufacture of fibers A process and apparatus for forming fibers from attenuable materials, such as molten glass, by attenuating streams of glass from the bottom of a bushing wherein the bottom has downwardly presented wall portions at upper and lower levels. According to the ... | 08/16/1983 |
| 4391619 | Air nozzle apparatus for use in drawing glass fibers An air nozzle apparatus for directing air flow against the undersurface of an orifice plate of a glass fiber drawing forehearth, having an air introducing section having a manifold formed with at least one air supply port, and an air nozzle section formed... | 07/05/1983 |
| 4391618 | Process and apparatus for the manufacture of fibers A process and apparatus for forming fibers from attenuable materials, such as molten glass, by attenuating streams of glass from the bottom of a bushing wherein the bottom has downwardly presented wall portions at upper and lower levels. According to the ... | 07/05/1983 |
| 4380462 | Glass fiber apparatus and method An apparatus and method for manufacturing glass fibers are provided. The apparatus comprises means for containing a head of glass; an orifice plate having a large number of orifices arranged in flooding relationship, each of said orifices being provided o... | 04/19/1983 |
| 4379713 | Method and apparatus for forming glass fibers The invention disclosed herein relates to method and apparatus for forming glass fibers wherein a fiber forming feeder has a bottom wall comprised of a substrate and a control layer arranged to form reticulated indentations around the orifices therein to ... | 04/12/1983 |
| 4363645 | Annular bushing for forming glass fibers Apparatus and method of producing glass fibers employing a tipped or tipless annular bushing plate from which fibers are drawn as an annular array. A cooling gas, such as air, is directed into contact with the bushing plate and with either, or both, the e... | 12/14/1982 |
| 4362541 | Method and apparatus for producing glass fibers or filaments The disclosure embraces a method of and apparatus for controlling or stabilizing the temperature or heat pattern at an orifice plate or feeder floor from which flow glass streams which are attenuated to fibers or filaments. More particularly the disclosur... | 12/07/1982 |
| 4349364 | Multiple orifice bushing A process for manufacturing glass filaments in which the bushing bottom plate has tips depending therefrom and each tip has a plurality of orifices from which glass filaments are drawn. The tips flood individually on start-up or during operation, and the ... | 09/14/1982 |
| 4338110 | Bushing for producing glass fibers The bushing (10) has a plurality of hollow bushing branches (10a, 10b, 10c, 10d) open to and extending radially from a central supply space (10e), resulting in better temperature control compared to a rectangular bushing with the same number of holes.... | 07/06/1982 |
| 4330312 | Apparatus for flowing streams of fiber-forming material for attenuation to fibers or filaments The disclosure embraces a method of and apparatus for processing heat-softened glass wherein a body of refractory has a cavity containing heat-softened glass and a floor construction associated with the body of refractory. The floor construction includes ... | 05/18/1982 |
| 4325722 | Bushing environment control assembly A bushing environment control assembly for use with a glass fiber filament forming device is disclosed. The assembly controls the environment in the attenuation zone immediately below the glass fiber forming bushing's tip plate, the area in which the molt... | 04/20/1982 |
| 4321074 | Method and apparatus for manufacturing glass fibers This invention relates to a method and apparatus for forming glass fibers. The invention comprises flowing streams of molten glass from a stream feeder through orificed projections depending from the feeder floor, directing gas upwardly into contact with ... | 03/23/1982 |
| 4318724 | Glass fiber-forming apparatus The invention relates to apparatus for producing fibers from heat softened mineral material, such as glass. More specifically, this invention relates to an orifice plate for a glass fiber drawing bushing of the type having a flat undersurface and a plural... | 03/09/1982 |
| 4311500 | Method of and means for removal of glass floods from a surface of a glass stream feeder The disclosure embraces a method of and apparatus for removing glass floods that may form on the tip section or orifice plate of a stream feeder, bushing or substrate from which normally flow streams of glass, the method and apparatus involving the applic... | 01/19/1982 |
