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| Number | Title | Issue Date |
| 7269974 | Bushing temperature controller A bushing temperature controller includes a transformer 3 which supplies a main current I1 to the bushing 2 for accommodating molten glass, and regulation current supply units 7 and 8 which are adapted to supply regulation currents... | 09/18/2007 |
| 7232348 | Electrical connection device for bushing which supplies filaments, such as glass filaments An electrical connection device for supplying power to a bushing that delivers filaments, especially glass filaments. The device includes a connection jaw clamp and an electrical connection piece with no protective sheath and including a flexible body, having one en... | 06/19/2007 |
| 7108917 | Variably impregnated flexible graphite material and method A flexible graphite sheet material having improved molding characteristics is provided by effecting resin impregnation such that the resin profile across one of the dimensions of the sheet is non-uniform. ... | 09/19/2006 |
| 7003986 | Fiberizing bushings and methods of using Electrical resistant bushings and methods for making fibers such as glass fibers by passing molten glass through these bushings to form fibers wherein the bushings have novel ears for attaching to electrical terminal clamps bringing electrical current to the bushing... | 02/28/2006 |
| 6813909 | Reinforcement member for a bushing tip plate and related method A plurality of different structural members for reinforcing a plate-like structure, such as a bushing tip plate for intended use in forming fibers from a fluid material supplied to a bushing assembly, are disclosed. Each reinforcing member includes a body having a f... | 11/09/2004 |
| 6810693 | Continuous in-line system for producing high temperature glass fiber materials The invention relates to an in-line process for producing high-temperature stable glass. A sizing composition is advantageously used to reduce plasticizing between the resinous matrix and the glass fibers. The in-line process uses a melter or furnace apparatus, incl... | 11/02/2004 |
| 6701754 | Screen for use in a glass fiber bushing system and bushing system therewith A screen comprises an electrically conductive elongate inner screen plate. The inner screen plate has at least one elongate fold therein and at least two elongate divergent surfaces on opposing sides of the fold. Each divergent surface has an upper end an... | 03/09/2004 |
| 6427492 | Bushing including a terminal ear A bushing including a terminal ear and a method of manufacturing the bushing are disclosed. The bushing includes a bushing body which can include side plates, end plates, a bottom plate, and terminal ears coupled to the bushing body. Clamps are attached t... | 08/06/2002 |
| 6379873 | Method and apparatus for the construction of photosensitive waveguides There is disclosed a method of constructing photosensitive waveguides on silicon wafers through the utilization of a Plasma Enhanced Vapor Deposition (PECVD) system. The deposition is utilized to vary the refractive index of resulting structures when they... | 04/30/2002 |
| 6196029 | Low profile bushing for making fibers A precious metal bushing used for fiberizing molten glass through nozzles protruding from the lower surface of an orifice plate in the bottom of the bushing requires a substantially reduced investment in precious metal by having very short sidewalls and e... | 03/06/2001 |
| 6065310 | High throughput glass fiberizing system and process This invention relates to a high throughput glass fiber production system and process to provide optimum glass delivery to the glass fiberizing bushing and enhanced glass production of textile fibers or filaments of glass. The fiberizing system includes d... | 05/23/2000 |
| 5935291 | Bushings and fiber forming assemblies A bushing including a tip plate having an orifice region including orifices to permit flow of a molten fiberizable material therethrough; a reservoir for supplying molten fiberizable material to the orifices; and a substantially planar perforated plate po... | 08/10/1999 |
| 5879427 | Bushing assemblies for fiber forming A bushing assembly for forming fibers from a supply of molten fiberizable material has: (a) a bushing block having an insulating body with a bore extending therethrough and (b) an electrically conductive bushing positioned adjacent to the bushing block to... | 03/09/1999 |
| 5848093 | Fiber-drawing furnace for drawing down an optical-fiber preform into an optical fiber The fiber-drawing furnace includes a graphite tube positioned vertically, heated by induction, and subjected internally to an inert atmosphere, said tube internally defining a fiber-drawing chamber. In the furnace said graphite tube is a double-walled tub... | 12/08/1998 |
| 5312470 | Apparatus for producing glass fibers This disclosure depicts a feeder or bushing where the heat transfer members or fin shields have outwardly disposed surfaces with a ceramic coating bonded to those surfaces. The heat transfer surfaces also are in direct contact with and adjacent to the dis... | 05/17/1994 |
| 5110333 | Glass fiberizing bushing A bushing assembly 10 through which molten glass 14 is extruded to form fiberglass filaments 12 includes a bushing 22 defining an extrusion face 32. Molten glass flows through the bushing 22 of the extrusion face 32. The extrusion face 32 has a plurality ... | 05/05/1992 |
| 5051121 | Segmented bushing temperature controller and method for using same The present invention provides a method of controlling the temperature of a multiple segment fiber glass bushing. Sensors monitor the temperature of each individual segment and the current delivered to the bushing is adjusted so as to maintain the average... | 09/24/1991 |
| 5017209 | High temperature furnace with thermal insulation A furnace comprising a cylindrical heater and a cylindrical insulation around the heater, wherein the insulation has anisotropy in heat transfer and a direction along which the thermal conductivity of the insulation is small corresponds to a direction alo... | 05/21/1991 |
| 4957525 | Composite bushing design A fiber glass production bushing is described utilizing a flat precious metal plate which is preferably supported by a nonprecious metal support plate. The support plate has slots cut in it so that the rows of depending fiber glass tips can project throug... | 09/18/1990 |
| 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 |
| 4925473 | Process and furnace for heat application Control of speed and uniformity of the heating of the working zone of the preform in a glass drawing operation in which the softening heat is applied by forced convection (13), using a separate fluid heating zone to introduce temperature and velocity cont... | 05/15/1990 |
| 4902327 | Monitoring fiber bend loss characteristics during manufacture Forming an optical fiber so as to have a relatively constant bend loss characteristic includes apparatus for continuously bending the optical fiber downstream from a preform from which it is drawn and continuously detecting light withdrawn from the fiber ... | 02/20/1990 |
| 4892572 | Optical fiber drawing apparatus An optical fiber drawing apparatus which includes a heating furnace which fuses a forward end of an optical fiber preform for drawing an optical fiber, and a screening portion which applies tension to the optical fiber through in-line, for guarantee of it... | 01/09/1990 |
| 4812151 | Viscosity control in the manufacture of mineral fibers A method for manufacturing mineral fibers comprises forming mineral fibers from molten mineral material, continuously discharging an auxiliary stream of molten mineral material, continuously measuring the temperature and the mass flow rate of the auxiliar... | 03/14/1989 |
| 4778501 | Process and furnace for heat application Control of speed and uniformity of the heating of the working zone of the preform in a glass drawing operation in which the softening heat is applied by forced convection (13), using a separate fluid heating zone to introduce temperature and velocity cont... | 10/18/1988 |
| 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 |
| 4741748 | Heating oven for preparing optical waveguide fibers A heating oven for processing glass materials from which optical waveguide fibers are prepared is provided which comprises: (a) an elongated chamber for receiving the glass material to be processed; and (b) means for heating the chamber, said means comprising ... | 05/03/1988 |
| 4740224 | Terminal connection for fiber glass bushing A lightweight, precious metal containing, glass fiberizing bushing having a novel power terminal ear arrangement is disclosed. The novel terminal ear arrangement has two relatively thin ears which extend from an area located near the midpoint of each end ... | 04/26/1988 |
| 4738700 | Method and apparatus for controlling temperature in a fiber glass forming bushing An apparatus for more accurately measuring the temperature of a fiber glass forming bushing is described which includes the placing of sidewall and bottom thermocouples in locations on the bushing so that electrical signals representing noise are eliminat... | 04/19/1988 |
| 4738701 | Method and apparatus for forming glass fibers A glass fiber forming assembly is described which permits rapid change of a production fiber glass bushing. The system includes a secondary bushing and means to heat it as well as a glass delivery bushing permanently connected to a forehearth. The product... | 04/19/1988 |
| 4717411 | Drain bushing A nonprecious metal drain bushing for use in the start-up of a glass melting furnace. The bottom wall of the bushing is relatively wide and thick and is bent downwardly near the ends of the bottom wall to form integral terminal ears. The end portions of t... | 01/05/1988 |
| 4654065 | Quasi-containerless glass formation method and apparatus Apparatus and method for forming ultrapure glass rods (13) or fibers (28) from a polycrystalline rod (11) in which the method comprises the steps of heating a selected short section of the rod in the first furnace (21) to form a molten zone of the rod, he... | 03/31/1987 |
| 4650508 | Method and apparatus for changing bushings An apparatus for changing bushings in a glass melting furnace is disclosed. A support attached to the furnace holds the bushings beneath an opening in the forehearth. A replacement bushing is placed in the framework, translated next to the operating bushi... | 03/17/1987 |
| 4634460 | Drain bushing A non-precious metal drain bushing for use in the start-up of a glass melting furnace. Relatively thin, wide terminal ears extend outwardly and downwardly from the ends of the bushing and are supported against bending stresses by a rigid band or strip whi... | 01/06/1987 |
| 4591371 | Glass fiber forming bushing construction A flat plate bushing is described which eliminates extensive precious metal use in drain and/or production bushings. The bushing utilizes a novel arrangement of insulation members and support plates that allow the bushing to be electrically heated and a n... | 05/27/1986 |
| 4566888 | Bushing construction A flat plate bushing is described which eliminates extensive precious metal use in drain and/or production bushings. The bushing utilizes a novel arrangement of insulation members and support plates that allow the bushing to be electrically heated and a n... | 01/28/1986 |
| 4565559 | Protection device for basalt drain bushings This invention relates to a method of retarding bushing degradation by glass batch containing iron oxide. The problem is solved by substantially eliminating the passage of current directly through the bushing for heating and employing a conductive heating... | 01/21/1986 |
| 4555257 | Optical fibre pulling tower An optical fibre pulling tower is made of tubular modular substructures (5) of synthetic granite mounted one on top of the other by means of joining plates (6) cast in situ. A baseplate (13) sits on a concrete raft (14) and is adjustable to be exactly upr... | 11/26/1985 |
| 4544392 | Apparatus for thermally conditioning heat softenable material The present invention is an auxiliary heated bushing block for a fiber forming furnace. The bushing block fits below an opening in the bottom of a forehearth of a glass melting furnace. A non-circular opening through the bushing block allows molten materi... | 10/01/1985 |
| 4536202 | Drain bushing A drain bushing for a glass melting apparatus of integral design and machined from a single block of dispersion-strengthened, non-precious alloy. The bushing includes integrally formed mounting flange and molten glass well portions. The bushing contact ea... | 08/20/1985 |
