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| Number | Title | Issue Date |
| 8079234 | Manufacturing apparatus for porous glass base material Provided is a manufacturing apparatus for manufacturing a porous glass base material by depositing glass particles, which has a chamber having air inlets, and an air distribution container having air outlets from which clean air is supplied to the air inlets. ... | 12/20/2011 |
| 7481077 | Device for manufacturing a preform for optical fibers through chemical deposition A device including at least one gripping member, rotatably mounted about an axis Z-Z, adapted to hold at least one end of at least one elongated element for chemical vapour deposition for forming a preform. The device includes at least one burner being mobile along ... | 01/27/2009 |
| 7415844 | Device for manufacturing a preform for optical fibres through chemical deposition A device for manufacturing a preform of glass material for optical fibres. A chemical deposition chamber, at least one burner mobile along a direction Z and adapted to deposit a chemical substance on at least an elongated element positioned along an axis Z-Z, at lea... | 08/26/2008 |
| 7383704 | Apparatus for deposition by flame hydrolysis An outside chemical vapor deposition apparatus is disclosed for depositing porous glass-forming material onto a target rod to form a cylindrical body, with substantially higher efficiency than could prior apparatus. The apparatus includes two separate burner arrays,... | 06/10/2008 |
| 7168256 | Apparatus and method for recovery and recycle of optical fiber coolant gas An apparatus and method for recovering and recycling a coolant gas from a heat exchanger. The apparatus comprises a coolant gas recovery section, and analysis section, and a coolant gas blending section. The coolant gas recovery section recovers a coolant gas contai... | 01/30/2007 |
| 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 |
| 7055345 | Glass base material manufacturing apparatus and glass base material manufacturing method An apparatus for manufacturing a glass base material, which is a base material of an optical fiber, comprising: a base rod, around and along which said glass base material is formed; a burner that hydrolyzes and accumulates a gas material, which is a base material o... | 06/06/2006 |
| 6941773 | Apparatus for manufacturing an optical fiber soot, and method for manufacturing an optical fiber soot using thereof An apparatus for manufacturing an optical fiber soot, which comprises a core partition having an opening portion at core burner side provided on a periphery of a core burner, in a reactor of the apparatus to be used in a conventional VAD method. ... | 09/13/2005 |
| 6920766 | Apparatus for producing synthetic quartz glass A synthetic quartz glass preform is produced by flame hydrolysis with subsequent cooling and is suitable for the application of high-energy DUV radiation in the wave length range under 250 nm. The preform has a core area which contains ≧1150 ppm OH, a strain doubl... | 07/26/2005 |
| 6698249 | Porous glass base material production device and method An object of the present invention is to reduce the adhesion of floating glass particulates to the surface of a soot preform during the manufacture of the soot preform, thereby reducing the voids generated in the transparent glass preform made from the so... | 03/02/2004 |
| 6592666 | Method and apparatus for applying a sizing composition to glass fibers A process and apparatus are provided for applying a sizing composition to glass fibers with improved size application efficiency, while also providing for the collection and reuse of sizing composition, as well as for providing sizing composition to the a... | 07/15/2003 |
| 6460379 | MCVD apparatus having two opposing motors to eliminate backlash in burner motion 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 t... | 10/08/2002 |
| 6449986 | Method of production of porous glass base material for optical fiber with cleaning of the burner with gas at 25 m/s or faster In a method of manufacturing a porous glass preform for an optical fiber which preform is formed as a deposit of fine glass particles by using a burner, a method to prevent the contamination of any glass particles having failed to be properly deposited so... | 09/17/2002 |
| 6430967 | Pressure monitoring system using disposable seals A pressure monitoring system for use in monitoring gas pressure within a rotating tube has a chemical delivery tube which projects into the rotating tube and whose distal end is sealed to the interior wall of the tube. A coaxial tube surrounds the deliver... | 08/13/2002 |
| 6367288 | Method and apparatus for preventing burner-hole build-up in fused silica processes In furnaces for producing high purity fused silica glass boules, glass particles have a tendency to build-up adjacent the burner hole rim. It was discovered that unburned furnace gases containing silica particles where re-circulated in the furnace close t... | 04/09/2002 |
| 6354112 | Method of depositing glass soot with controlling reaction chamber humidity to prevent accumulation of excess soot A method and apparatus for producing a glass base material for an optical fiber. A material for an optical fiber and a reaction gas are jetted from a burner connected to a material line and a gas line toward a surface of a quartz substrate, in order to de... | 03/12/2002 |
| 6273952 | Applicator for high solids sizing One aspect of the present invention is a film applicator for applying a coating to at least a portion of a surface of fibers, comprising: an enclosure having a reservoir to store a coating composition; a roller having a generally cylindrical surface posit... | 08/14/2001 |
| 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 |
| 5879428 | Apparatus for manufacturing optical fiber preform An apparatus for manufacturing an optical fiber preform, comprising a reaction vessel housing a core, combustion burners each arranged such that a flame spurting port thereof is positioned within the reaction vessel so as to generate fine glass particles ... | 03/09/1999 |
| 5843202 | Apparatus for forming migration free glass fiber packages Energy efficient apparatus for forming migration free glass fiber packages composed of fibers bearing substantially uniform coatings of size composition. Heated air from around the fiber forming bushing is drawn into a chamber through which the glass fibe... | 12/01/1998 |
| 5795365 | Method of producing and treating glass threads by blowing dried air across coated fibers A thread is formed of one or a plurality of fans of continuous filaments on which a sizing composition is deposited. The moisture content on the thread is controlled by subjecting the fans of filaments to a current of air transversely to the direction of ... | 08/18/1998 |
| 5693118 | Apparatus for making glass fibers having vacuum cooling fans An apparatus (10) is provided for producing continuous glass filaments (30). The apparatus (10) comprises a bushing (20) for supplying streams of molten glass and a drawing device (40) adapted to draw the streams into continuous glass filaments (30). A co... | 12/02/1997 |
| 5639290 | Process for producing a glass preform for an optical fiber and apparatus for the same The present invention relates to a process for producing a porous glass preform for an optical fiber and an apparatus for conducting such a process. According to the process, fine glass particles are produced by heating and reacting vaporous starting mate... | 06/17/1997 |
| 5601629 | Apparatus for producing a fiberglass pack with two steps of binder application A fiberglass product usable as an end product or an intermediate product is formed as a pack in a forming station but only 1/7th of the conventional quantity of binder is applied. After curing to a self-sustaining form, additional binder is added in an am... | 02/11/1997 |
| 5356451 | Method and apparatus for vaporization of liquid reactants Disclosed is a method and apparatus for providing reactant vapors to a utilization site. The apparatus includes a vaporization chamber enclosed by top and bottom walls, side walls and first and second end walls. The first end wall is elevated with respect... | 10/18/1994 |
| 5338328 | Apparatus of manufacturing hermetic coating optical fiber A mass production method and apparatus of hermetic coating optical fiber where a bare fiber drawn from a preform is hermetically coated by CVD method in a reactor vessel, wherein a liquid flushes solid particles or by-products sticking to the reactor inne... | 08/16/1994 |
| 5294260 | Apparatus for curing coatings on drawn optical fiber A curing apparatus which is supported from a base plate (68) includes a housing which includes guide members for holding a magnetron and one portion of an elliptical chamber in which is disposed a longitudinally extending bulb. Outside the housing are tri... | 03/15/1994 |
| 5242477 | Apparatus for coating optical fibers An optical fiber (24), destined to receive a hermetic coating (32), is moved through a hermetic coating apparatus (30) wherein the fiber, entering the hermetic coating apparatus as a predetermined temperature, is caused to be engaged by a reactive gas. Th... | 09/07/1993 |
| 4950319 | Heating oven for preparing optical waveguide fibers A heating oven is provided for processing glass materials from which optical waveguide fibers are prepared. The oven includes a vertically oriented, elongated cylindrical muffle for receiving the glass material which is to be processed. The supporting str... | 08/21/1990 |
| 4750927 | Heating apparatus for drawing glass rod A heating apparatus for drawing a glass rod having a tapered portion coupled, at its upper end, with a feed bar of an outside diameter smaller than that of the glass rod, including an apparatus housing into which the glass rod is inserted, a first sealing... | 06/14/1988 |
| 4740226 | Apparatus for the production of porous preform of optical fiber In an apparatus for the production of a porous optical fiber preform in a reaction container is provided in which a bar like starting member is movably supported for rotating and reciprocally moving across a gas flow, and a burner is provided for generati... | 04/26/1988 |
| 4514205 | Fiber cooling apparatus Disclosed is an optical waveguide fiber coating system having means for cooling the hot fiber prior to the time that the fiber enters the coating apparatus. The cooling means comprises an elongated coolant tube through which the fiber passes. Cool dry hel... | 04/30/1985 |
| 4440556 | Optical fiber drawing using plasma torch In order to provide a high power heat source having a very clean and invariable heat flux, a ring plasma is induced in a heating zone of a plasma torch including a plurality of coaxial tubular elements and the optical fiber is drawn through a channel pass... | 04/03/1984 |
| 4440558 | Fabrication of optical preforms by axial chemical vapor deposition Hydroxyl free deposition with high efficiency and at a high deposition rate may be achieved, even with use of relatively inexpensive raw materials, by utilizing a ring-shaped plasma activated axial chemical vapor deposition obtaining 100% chemical convers... | 04/03/1984 |
| 4437870 | Optical waveguide fiber cooler Disclosed is an optical waveguide fiber coating system having means for cooling the hot fiber prior to the time that the fiber enters the coating apparatus. The cooling means comprises an elongated tube through which the fiber passes. Cool dry helium is f... | 03/20/1984 |
| 4421540 | System for producing an optical fiber preform with gas volume control A process for producing an optical fiber preform in a muffle furnace by hydrolyzing a gaseous glass forming material with a flame from an oxyhydrogen burner and depositing the resulting soot in a rod shape and an apparatus therefor are described, wherein ... | 12/20/1983 |
| 4235614 | Method and device for the manufacture of glass filaments This invention relates to a method and apparatus for promoting the fiberization of continuous lengths of thermoplastic materials such as glass. Prior attempts to reduce fiber breakage, bushing flooding and facilitate fiberization utilized steam or a decom... | 11/25/1980 |
| 4111672 | Method and apparatus for suppression of pollution in mineral fiber manufacture Methods and equipment are disclosed for production of mineral fibers, by attenuation, involving the use of a substantial volume of gas, in which water is also employed at least in a fiber binder, the methods and equipment providing for recirculation of mo... | 09/05/1978 |
