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| Number | Title | Issue Date |
| 7735340 | Method and apparatus for homogenizing a glass melt The present invention is directed toward a method of reducing contamination of a glass melt by oxide particulates, such as particulates of platinum oxide, which may condense on the inside surfaces of a stir chamber, particularly the stir shaft, and fall back into th... | 06/15/2010 |
| 7296441 | Device and method for melting a substance with the occurrence of a low level of contamination The invention relates to an apparatus and a method for low-contamination melting of high-purity, aggressive and/or high-melting glass or glass-ceramic. According to the invention, for this purpose a melt is heated in a crucible or melting skull crucible by means of ... | 11/20/2007 |
| 7010941 | Coating of cooled devices A structural component for a device for the treatment of melts, especially of glass melts, having a base body of metal or of a metal alloy and a cooling system in which a cooling medium is led through the structural component for the leading-off of heat. The base bo... | 03/14/2006 |
| 7000431 | Method of preventing schileren formation in a glass melt with same The sleeve-type glass melt agitator has a rotatable cylindrical sleeve provided with outwardly protruding vane elements and through-going openings in its outer cylindrical surface to stir the glass melt when the sleeve is rotated. The sleeve type agitator is arrange... | 02/21/2006 |
| 6874335 | Large scale synthesis of germanium selenide glass and germanium selenide glass compounds Systems and methods for large scale synthesis of germanium selenide glass and germanium selenide glass compounds are provided. Up to about 750 grams of a germanium selenide glass or a glass compound can be synthesized at a time in about eight hours or less. Stoichio... | 04/05/2005 |
| 6698244 | Method for refining molten glass The invention describes a method for refining molten glass materials, in which refining gas is generated by refining agents in the molten glass, and in which the molten glass is heated to a temperature of between 1650° C. and 2800° C., and the maximum r... | 03/02/2004 |
| 6357264 | Apparatus for melting molten material This apparatus is a furnace for heating molten material which employs oxygen-fuel burner assemblies. Preferably, the assemblies are submerged in the molten material. They are water cooled top down units with burner nozzles being off-set from the supply co... | 03/19/2002 |
| 6334337 | Air bubbler to increase glass production rate In a glass melter, a precious metal insert is used to protect a gas bubbler from corrosion at the orifice of the bubbler through which gas is injected into the melt. The use of a precious refractory metal insert at the bubbler orifice prevents the attack ... | 01/01/2002 |
| 6272887 | Bushing tip plate support assembly for a bushing in a filament forming apparatus A bushing tip plate support assembly for a bushing in a filament forming apparatus is disclosed. The support assembly improves the flatness of the tip section within the spans between the external support and the center support. The filament forming appar... | 08/14/2001 |
| 6250111 | Lining material for glass melting furnaces, glass melting furnaces, process for producing glass products, and process for purifying the lining material A lining material for glass melting furnaces comprises platinum or platinum alloy as a base material containing osmium as an impurity in an amount no more than 20 ppm. The lining material is used for that part of the melting furnace which comes into conta... | 06/26/2001 |
| 6109062 | Apparatus for melting molten material This apparatus is a furnace for heating molten material which employs oxygen-fuel burner assemblies. Preferably, the assemblies are submerged in the molten material. They are water cooled top down units with burner nozzles being off-set from the supply co... | 08/29/2000 |
| 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 |
| 5928402 | Multi-screen system for mixing glass flow in a glass bushing A multi-screen mixing apparatus for installation in a fiber-forming bushing used in the manufacture of glass fibers. The multi-screen mixer attaches to the walls of the bushing, and includes a first screen having openings therein through which the glass f... | 07/27/1999 |
| 5849058 | Refining method for molten glass and an apparatus for refining molten glass A refining method for molten glass comprising a stirring step for stirring molten glass in a stirring vessel, a feeding step for feeding the molten glass into a vacuum vessel via an uprising pipe, a degassing step wherein the molten glass is put under a r... | 12/15/1998 |
| 5827341 | Method and apparatus for making glass A method and apparatus for making float glass, wherein the glass is stirred in the conditioning zone adjacent the entrance to the float canal so as to attenuate the glass across the entire width of the float canal.... | 10/27/1998 |
| 5672190 | Pool separation melt furnace and process Process and furnace for the continuous production of a molten pool from particulate meltable batch materials such as glass-forming raw materials. The raw materials, in particulate form, are injected into and suspended in combustion gases within a combusto... | 09/30/1997 |
| 5588978 | Process and apparatus for coloring glass A method and apparatus for the production of colored glass includes the steps of diverting a stream of clear molten glass from at least one glass melting furnace through one or more transport channels to a color treatment chamber. Recycled cullet and colo... | 12/31/1996 |
| 5536291 | Method for melting glass in and a glass melting furnace for the practice of the method In a furnace for melting glass, a preheating zone, a melting zone, a refining zone with a refining bank raised above the rest of the floor and an homogenizing zone, are arranged lengthwise behind one another between the charging end for the glass raw mate... | 07/16/1996 |
| 5447547 | Annular batch feed furnace and process A particle suspension furnace having an upper injector section, an intermediate combustion section and a lower separation section. The injector section comprises a central fuel conduit for supplying a rich fuel/air mixture to a burner at the base of the i... | 09/05/1995 |
| 5243621 | Method of feeding glass batch to a glass-melting furnace A method of feeding glass to a glass-melting furnace for making a vitreous material, a heated airstream containing air at a temperature in excess of 1,000° C. is passed down vertical cylinders towards the crown of the glass-melting furnace. Powdered glas... | 09/07/1993 |
| 4604121 | Method of pretreating glass batch In a glass batch liquefying process, batch-entrained nitrogen is purged by contacting the batch with a substantially nitrogen-free gas in a pretreating stage.... | 08/05/1986 |
| 4559072 | Process and apparatus for producing glass A process for the production of glass comprises introducing cullet or frit into a glass furnace and melting it therein to form a flux, and guiding the flux along a track, which may be slightly inclined. Preheated raw material components are applied to the... | 12/17/1985 |
| 4549896 | Apparatus and method for removing gaseous inclusions from molten material A process and apparatus for improving the removal of gaseous inclusions from molten materials is disclosed. The inclusions, e.g., seeds or bubbles, are removed by applying vibrations to a restricted zone for discharging molten material from the melting ta... | 10/29/1985 |
| 4398925 | Acoustic bubble removal method A method is described for removing bubbles (14) from a liquid bath (12), such as a bath of molten glass to be used for optical elements. Larger bubbles are first removed by applying acoustic energy resonant to a bath dimension (H) to drive the larger bubb... | 08/16/1983 |
| 4316734 | Removing inclusions A method of removing gaseous inclusions from a highly viscous liquid (10) that comprises applying sonic energy, as by means of acoustic horns (11), or other suitable acoustic source, in the liquid (10) at an energy intensity sufficient to induce migration... | 02/23/1982 |
| 4305743 | Method and system for quenching, drying, and elevating glass compositions A method and system for quenching, drying, and elevating glass compositions comprising an incline reciprocating conveyor arranged to receive a stream of molten glass. The reciprocating conveyor has deep side and lower end walls in order to hold a pool of ... | 12/15/1981 |
| 4278460 | Method and apparatus for mixing and homogenizing molten glass Method and apparatus is presented particularly suitable for blending and homogenizing a low viscosity molten additive into a relatively high viscosity host glass composition as it flows through a supply forehearth. The blending and homogenizing is perform... | 07/14/1981 |
| 4187115 | Anorthite glass-ceramics The instant invention is related to the production of highly refractory glass-ceramic articles having moderate coefficients of thermal expansion in the CaO-Al2 O3 -SiO2 -TiO2 field wherein anorthite comprises th... | 02/05/1980 |
| 4019888 | Method of melting a raw bath and a glass furnace for performing the method A method of and a glass furnace for the melting of a raw batch of glass, in the form of pellets distributed in a thin, uniform layer over a glass melt by a rotor arranged in the roof of the glass furnace, with air being injected into the glass melt. The m... | 04/26/1977 |
