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| Number | Title | Issue Date |
| 8171754 | Reduced alloy bushing flange A cooling bushing flange having a reduced amount of precious metal is provided for a glass fiber production apparatus. The flange includes a first portion formed of a precious metal or a precious metal alloy extending outwardly from a bushing and a second portion fo... | 05/08/2012 |
| 7654113 | Apparatus for cooling a filament forming area of a filament forming apparatus A cooling apparatus includes a manifold defining a fluid channel, and also includes a plurality of cooling fins connected to the manifold, wherein at least a portion of a surface of the fins includes porous material. ... | 02/02/2010 |
| 7293431 | Apparatus for cooling a filament forming area of a filament forming apparatus A cooling apparatus includes a manifold defining a fluid channel, and also includes a plurality of cooling fins connected to the manifold, wherein at least a portion of a surface of the fins includes porous material. ... | 11/13/2007 |
| 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 |
| 6907757 | Drawing method of optical fiber and drawing furnace The drawing method of the present invention uses a drawing furnace comprising a furnace muffle tube, a furnace body and a heater. According to the method, an optical fiber preform is inserted from the inlet of the furnace muffle tube, the optical fiber preform is me... | 06/21/2005 |
| 6647747 | Multifunctional apparatus for manufacturing mineral basalt fibers The invention discloses a multifunctional apparatus and method to manufacture mineral (basalt) fibers to be drawn/attenuated into a continuous strand made from natural rock basalts with and without supplemental minerals. More specifically this invention d... | 11/18/2003 |
| 6408654 | Filament forming apparatus and a cooling apparatus for and method of inducing a uniform air flow between a filament forming area and the cooling apparatus A filament forming apparatus and cooling apparatus for and method of inducing a uniform air flow between a filament forming area beneath a bushing and the cooling apparatus are disclosed. The cooling apparatus includes an air housing extending beneath the... | 06/25/2002 |
| 6192714 | Filament forming apparatus and a cooling apparatus for and method of cooling a filament forming area A filament forming apparatus and cooling apparatus for and method of cooling a filament forming area beneath a bushing is disclosed. The cooling apparatus includes a manifold with a cooling fluid channel formed therein, and a plurality of hollow cooling f... | 02/27/2001 |
| 5979192 | Fin blade assembly A glass fiber forming apparatus including a fin blade assembly having a manifold and a plurality of fins extending from the manifold. The fins are located beneath a bushing tip plate in proximity to and between the rows of tips to maintain a desired tempe... | 11/09/1999 |
| 5925164 | Finshield assemblies for fiber-forming apparatus A heat-absorbing finshield assembly, which is located adjacent the discharge area of a furnace for producing glass fibers, includes fins spaced along a fluid-cooled manifold such that the fins extend between, but not in contact with, the molten glass fibe... | 07/20/1999 |
| 5846285 | Apparatus for producing continuous glass filaments An apparatus is provided for producing continuous glass filaments. The apparatus comprises a feeder (20) for supplying streams of molten glass to be drawn into continuous filaments, a drawing device (40) adapted to draw the streams into the filaments, and... | 12/08/1998 |
| 5709727 | Heat transfer device A bushing assembly is provided which is adapted to be positioned beneath a forehearth (30) to receive a stream of molten glass flowing from the forehearth (30). The assembly comprises a glass receiving block (76), a bushing (50) and at least one cooling e... | 01/20/1998 |
| 5244483 | Apparatus for producing glass filaments The apparatus includes a bushing, a cooling assembly, a sizing applicator, a glass filament gathering pad and a winder. A tip section of the bushing is provided with rows of tips having orifices from which streams of molten glass are attenuated into filam... | 09/14/1993 |
| 4941903 | Novel fiber-forming bushing and tip plate This invention relates to a novel bushing apparatus and nozzles or projecting orifices known as tips for the production of glass fibers. Particularly, it relates to a bushing having tips with cross sections in the form of finite-sided polygons. It has bee... | 07/17/1990 |
| 4824457 | Method and apparatus for controlling thermal environment in a glass fiber forming process A method and apparatus for controlling a glass fiber forming environment is disclosed. A fin cooler having a plurality of hollow cooling fins, each provided with a coolant liquid flow passage and further having a header block provided with separate coolan... | 04/25/1989 |
| 4704150 | Glass fiber forming bushing assembly A bushing assembly is described which involves two fiber glass bushings, one being a production bushing and the other a permanent bushing attached to a fiber glass forehearth. Restricted flow channels are provided in the upper bushing to flow small quanti... | 11/03/1987 |
| 4681613 | Slag furnace melt flow control valve A valve apparatus for the precise regulation of a stream of molten material such as molten rock or slag as it issues from a primary melter or holding device, comprising a frame retaining a valve, the valve comprising a pair of plate-form valve members, on... | 07/21/1987 |
| 4670032 | Melt flow control valve A valve apparatus for the precise regulation of a stream of molten material such as molten rock or slag as it issues from a primary melter or holding device, comprising a frame retaining a valve, the valve comprising a pair of plate-form valve members, on... | 06/02/1987 |
| 4662922 | Method and apparatus for the production of glass filaments A continuous glass fiber forming system incorporates a high energy stream of fluid to establish and control induced air flow from around the feeder to (1) substantially simulate the induction of air into the filament forming region in the absence of filam... | 05/05/1987 |
| 4565557 | Containerless high purity pulling process and apparatus for glass fiber Apparatus and method for pulling optical glass fibers in a containerless environment is disclosed which includes a single-axis acoustical levitation furnace (10) in which a specimen (S) is levitated and melted. A reflector unit (16) is carried in the inte... | 01/21/1986 |
| 4400190 | Graphite element for use in a furnace for drawing optical fiber A furnace for drawing optical fiber includes a graphite element of generally cylindrical shape with a reduced central cross-sectional configuration having a flange at opposite ends thereof and having an axial hole therethrough including a central internal... | 08/23/1983 |
| 4356016 | Cooling tube alignment means and process therefor A fiberizing bushing having a plurality of cooling tube alignment members spaced from the tip plate of the bushing wherein only a small portion of the space is filled with a refractory cement.... | 10/26/1982 |
| 4351656 | High pressure forming bushing A fiber glass bushing is disclosed which is formed with a corrugated bottom which provides a plurality of flat ridges on which are positioned orifices. The ridges are separated by grooves containing ceramic insulation and the bushing provided with means t... | 09/28/1982 |
| 4344785 | Modular molten glass column A modular molten glass column comprised of a plurality of modular glass conduits for providing glass to, for example, a high pressure glass fiber forming bushing is disclosed. The column consists of several glass modules, each of which includes a glass co... | 08/17/1982 |
| 4343635 | 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... | 08/10/1982 |
| 4332602 | Fin cooler for glass fiber former A fin cooler particularly suited for use with a high pressure glass fiber forming bushing is disclosed. The fin cooler is structured to provide support for the tip plate of the bushing so that sag or creep of the tip plate which occurs due to the pressure... | 06/01/1982 |
| 4330311 | High pressure forming bushing and fin cooler A high pressure glass fiber forming bushing and cooperating fin cooler assembly are disclosed. The bushing is provided with a corrugated tip plate which carries the nozzles or tips through which the glass fiber is forced by a pump or other pressure creati... | 05/18/1982 |
| 4303429 | Apparatus and method for production of mineral fibers The present invention embraces an apparatus for, and methods of, forming mineral fibers, such as glass. Such invention comprising a mineral fiber forming bushing bottom wall comprising a base plate and elongated members projecting downwardly from the exte... | 12/01/1981 |
| 4153438 | Method and apparatus for controlling the viscosity of glass streams The disclosure embraces a method of and apparatus for transferring heat from streams of glass flowing from a feeder through the use of a closed hollow heat exchanger unit or instrumentality containing a working fluid for rapidly absorbing heat from intens... | 05/08/1979 |
| 4146373 | Bushing construction Improved construction for bushings used to produce glass fibers is provided. Such bushings commonly have thin side and end walls of precious metal defining a glass-melting chamber, with a bottom in which fiber-forming tips are located. Refractory material... | 03/27/1979 |
| 4140506 | Method for processing glass in forming fibers The disclosure embraces a method of and apparatus for processing heat-softened mineral material, such as glass, wherein streams of glass flowing from orifices in depending projections of a stream feeder are conditioned for attenuation through the use of m... | 02/20/1979 |
| 4055406 | Apparatus for making glass fibers material The disclosure embraces a support arrangement for a stream flow section or area of a feeder or bushing adapted to flow a large number of streams of glass or other fiber-forming mineral material for attenuation to fibers or filaments wherein the support ar... | 10/25/1977 |
| 3985530 | Production of glass fibers In the production of glass fibers by the use of a multi-tipped bushing arranged beneath an opening in the floor of a fore-hearth along which the molten glass flows, an apertured cover plate is disposed across the opening at or near its bottom and carries ... | 10/12/1976 |
