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| Number | Title | Issue Date |
| 7578144 | Method for minimizing refractory metal inclusions in a glass stirring operation A method of a stirring a molten glass which includes an analytical model which may be used to optimize the stirring conditions to minimize refractory metal inclusions which may result from the stirring operation. ... | 08/25/2009 |
| 7310973 | Method and apparatus for making variegated glass sheets and tiles An apparatus is disclosed comprising a first color glass feeder having a first valve device, and a second color glass feeder having a second valve device, each connected by communications links to a controller. The controller controls the first valve device and seco... | 12/25/2007 |
| 7171827 | System and method for automated casting of infrared glass optical components In accordance with the present invention, a system and method for the automated casting of infrared glass optical components is provided. The system includes a mold for casting infrared glass into lenses, a mold chamber operable to heat the mold to a temperature abo... | 02/06/2007 |
| 7159419 | System and method for vapor pressure controlled growth of infrared chalcogenide glasses A system and method for preparing chalcogenide glass are provided that allow for larger quantities of glass to be produced with lower production costs and less risks of environmental hazards. The system includes a reaction container operable to hold chalcogenide gla... | 01/09/2007 |
| 7159420 | System and method for forming infrared glass optical components A system and method for forming infrared glass optical components are provided. The system includes first and second mold halves having first and second respective faces. The first and second mold halves are configured to be removably coupled such that the first fac... | 01/09/2007 |
| 7134299 | Meltdown device as well as a process for the production of high-UV-transmitting glass type The invention relates to a meltdown device for the production of high-UV transmittive glass types, comprising a meltdown tank for a melt bath a feed opening for the supplying or laying-in of highly pure raw materia... | 11/14/2006 |
| 7127919 | Methods and apparatus for homogenizing molten glass The level of precious-metal inclusions in glass products, e.g., glass substrates for liquid crystal displays, is reduced by stirring molten glass in a stir chamber (11) under conditions such that the magnitude of the shear stress τ on the chamber's wall (... | 10/31/2006 |
| 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 |
| 6854290 | Method for controlling foam production in reduced pressure fining A method for controlling the foam produced when a molten material encounters reduced pressure in a vacuum chamber includes passing the molten material through an aging zone in the vacuum chamber in which the molten material is allowed to drain from between the bubbl... | 02/15/2005 |
| 6769272 | Method and apparatus for oxygen refinement of a glass melt An apparatus for making glass in which a glass melt is refined in a vessel with oxygen is described. It includes a melt-containing vessel (10) having a refining region (3) for refinement of the glass melt and a noble metal member for producing oxygen i... | 08/03/2004 |
| 6763684 | Glass homogenizing pump A molten glass pump preferably includes one or more pumps which form either a single-stage apparatus or are combined in series to form a multi-stage apparatus. The exact configuration depends on the required process pressure and the required degree of glass homogeni... | 07/20/2004 |
| 6463763 | Apparatus for stirring glass melts The invention pertains to a stirrer apparatus for glass melts. A stirring element and a stirrer shaft are provided, each comprised of a metal or a metal alloy having a high melting point temperature. A drive shaft for the stirring element comprises a diff... | 10/15/2002 |
| 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 |
| 5634958 | Method and apparatus for conditioning and homogenizing a glass stream At least one cooling zone and a subsequent homogenization zone are installed between the inlet and the outlet of a forehearth for conditioning and homogenizing a stream of colored glass. The glass temperature in the forehearth is reduced from the inlet te... | 06/03/1997 |
| 5630860 | Method and apparatus for conditioning and homogenizing a glass stream A continuously flowing glass stream is conditioned and homogenized along a conditioning stretch, which extends from an entry side to at least one extraction point, and at the beginning of which there is a cooling zone, to which at least one homogenizing z... | 05/20/1997 |
| 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 |
| 5573569 | Method for conditioning and homogenizing a glass stream A continuously flowing glass stream is conditioned and homogenized along a conditioning stretch, which extends from an entry side to at least one extraction point, and at the beginning of which there is a cooling zone, to which a homogenizing zone for the... | 11/12/1996 |
| 5550310 | Method for waste for vitrification A waste vitrification apparatus (10) having rotatable mixer impeller (16) functioning as a shaft electrode (60) and metallic vessel (14) functioning as a vessel electrode (62). A stream (12) of waste material and vitrifiable material are mixed and melted ... | 08/27/1996 |
| 5529594 | Method for producing mineral fibers having gaseous occlusions The mineral fiber forming apparatus having electrodes for heating heat softenable mineral material to form a molten mineral mass is disclosed. Organically-coated glass fiber scrap and cullet are supplied to the vessel providing the heat softenable mineral... | 06/25/1996 |
| 5433765 | Throat for the transfer of molten glass A flow duct or throat 1 for the passage of molten glass from the glass production zone to the shaping zone incorporates glass homogenizing stirrers 15, 16, 17 and 18, as well as a flow channel 2 and a heel 40. The stirrers, flow channel and heel are effec... | 07/18/1995 |
| 5364426 | High shear mixer and glass melting method A glass melter 30 having a mixing impeller 34 for converting a feed stream 38 supplied to a vessel 32 into a vitrified glass melt 50. Heating means such as electrodes 36 or a gas burner 58 are used to heat the glass melt 50. Electrode 36 arrangements are ... | 11/15/1994 |
| 5319669 | Hazardous waste melter An apparatus for processing various hazardous waste materials by melting in a vessel for subsequent solidification is disclosed which includes a seal for the cover thereof. Melter includes a high-speed mixing impeller powered by a drive shaft which extend... | 06/07/1994 |
| 5273567 | High shear mixer and glass melting apparatus and method A glass melter 30 having a mixing impeller 34 for converting a feed stream 38 supplied to a vessel 32 into a vitrified glass melt 50. Heating means such as electrodes 36 or a gas burner 58 are used to heat the glass melt 50. Electrode 36 arrangements are ... | 12/28/1993 |
| 5241558 | Vertical glass melting furnace A vertical glass melting furnace of the type having an inlet for raw materials at the top thereof, an outlet for molten glass at the bottom thereof, and a tabular electric resistance heating element for melting which is immersed at some level in molten gl... | 08/31/1993 |
| 5006145 | Center biased stirring for improved glass homogenization Better homogenization of molten glass or the like is achieved by a row of stirrers when greater stirring force is provided in the center portion of the row. Preferred embodiments employ stirrers with blades, and stirrers in the center portion have longer ... | 04/09/1991 |
| 4981504 | Process and device for melting glass The device pursuant to the invention comprises a device for agitation composed of at least one horizontal agitator formed from a series of essentially vertical loops extending over the entire width of the bath near the collar between the refining zone and... | 01/01/1991 |
| 4961772 | Method and apparatus for continuously melting glass and intermittently withdrawing melted glass A glass melting furnace comprises a base structure (6) defining a melting chamber (8) an intermediate chamber (10), and a working chamber (12), in which chambers heaters are located. An opening (22) is provided into the melting chamber (8), through which ... | 10/09/1990 |
| 4941907 | Process for producing an optical fluorophosphate glass having anomalous positive partial dispersion Optical fluorophosphate glass which is based on Mg(PO3)2, Ca(PO3)2, Ba(PO3)2, Al(PO3)3, MgF2, CaF2, SrF2, AlF3, BaO and SrO and ... | 07/17/1990 |
| 4892573 | Process and device for melting glass The device pursuant to the invention comprises means for agitation composed of at least one horizontal agitator formed from a series of essentially vertical loops extending over the entire width of the bath near the collar between the refining zone and th... | 01/09/1990 |
| 4828594 | Process for the production of glass The present invention relates to a process for the production of a glass from silica as a raw material by a vacuum melting method, in which a high quality glass is produced efficiently by compounding a silica powder containing an excess amount of the acce... | 05/09/1989 |
| 4609392 | Sample preparation machine This invention relates to an apparatus for preparing samples. These samples will be used for making disks and solutions for subsequent analysis by chemical or physical means. The machine contains an assembly of several gas burners with a crucible above ea... | 09/02/1986 |
| 4543117 | Method for producing molten glass The invention relates to a method for producing molten glass in a melting furnace 1 equipped with a tank containing a glass bath 3, where the ingredients of the glass are melted in a refining zone 10 and the molten glass flows into an adjacent conditionin... | 09/24/1985 |
| 4517000 | Apparatus for producing molten glass The invention relates to a method for producing molten glass in a melting furnace 1 equipped with a tank containing a glass bath 3, where the ingredients of the glass are melted in a refining zone 10 and the molten glass flows into an adjacent conditionin... | 05/14/1985 |
| 4325724 | Method for making glass An improved method of preparing a molten glass composition is presented. The constituents of the molten glass composition are classified into two or more melting groups according to mutual melting properties or characteristics such as volatility, corrosiv... | 04/20/1982 |
| 4317669 | Glass melting furnace having a submerged weir A continuous tank-type glass melting furnace containing a bath of molten glass and having a waist section of reduced width whereat a submerged weir extends across the path of the molten glass bath flowing therethrough. The weir is located adjacent the flo... | 03/02/1982 |
| 4200448 | Glass manufacture In a glass melting tank, a plurality of stirrers are spaced apart across the tank and arranged to extract heat from the forward flowing glass so as to achieve a differential extraction of heat from the glass which flows along a return path towards the inl... | 04/29/1980 |
| 4195981 | Molten glass homogenizer and method of homogenizing glass Disclosed is an improved stirrer for homogenizing glass in a forehearth of a glass furnace. It comprises a paddle having both upwardly and downwardly slanting holes that is reciprocated in the manner of a hoe back and forth across the forehearth. A novel ... | 04/01/1980 |
| 4099951 | Glass melting furnace and process with recirculation of molten glass Glass is melted in a furnace having a melting zone and one or more processing tanks adjacent to the melting zone. Molten glass flows from the melting zone to the processing tank through a passage. A portion of the molten glass is withdrawn from the top of... | 07/11/1978 |
| 4046546 | Method and apparatus for refining glass in a melting tank An elongated tank body of a glass melting apparatus defines a melting region adjacent its inlet end, a refining region downstream, a conditioning zone adjacent its outlet end and an intermediate zone leading from the refining region to the conditioning zo... | 09/06/1977 |
