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| Number | Title | Issue Date |
| 7637124 | Bismuth containing fluorophosphate glass and method for making thereof New and improved compositions of doped and co-doped bismuth fluorophosphate glasses for lasers is disclosed that have a high refractive index (nD) of approximately 1.6 and higher, high transmission in the near infrared part of the spectrum, and a wide glass forming ... | 12/29/2009 |
| 7040122 | Process for production of molten glass The invention concerns a process and a device from the production of molten glass. According to the invention, measures will be taken to lead the current of the molten glass through the tank furnace so that cutoffs of the glass current between the surface of ... | 05/09/2006 |
| 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 |
| 7007515 | Noble metal duct for conducting a glass melt and method for conducting a glass melt The double-walled noble metal duct (1) for conducting a glass melt has an outer noble metal pipe (1b) and an inner noble metal pipe (1a) extending within the outer pipe, so that an inner space (21) is formed within the inner... | 03/07/2006 |
| 6917794 | Phase compensation circuit A phase compensation circuit, for use with an FM reception system, includes a delay circuit and a control circuit. The delay circuit receives a composite input signal that exhibits a variable phase error and provides a plurality of selectable discrete delays. The co... | 07/12/2005 |
| 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 |
| 6823694 | Method of manufacturing glass optical elements A method for manufacturing a glass optical element having at least one concave surface, including: softening a glass molding material by heating, molding the softened material with a first mold having a first molding surface and a second mold having a second molding... | 11/30/2004 |
| 6705122 | Method and apparatus for controlling temperature of cooling air for glass manufacturing machine The temperature of cooling air to a manifold for distribution to molds of a glass manufacturing machine is controlled by passing untreated air through an indirect heat exchanger in indirect heat exchange relationship with water flowing through a coil in the indirect... | 03/16/2004 |
| 6672111 | Method and apparatus for adding metals to fused silica Methods and apparatus for adding metals such as aluminum to fused silica glass articles are disclosed. The methods and apparatus allow for controlled, low level addition of metals into fused silica glass articles. The fused silica glass articles containin... | 01/06/2004 |
| 6250109 | Method of continuously producing vitreous blast furnace slag The invention relates to a process for continuously producing a glassy or vitrified blast furnace slag, in which the slag is applied onto a cooling roll or onto articulately interlinked cooling plates conducted as an endless conveyor belt over deflection ... | 06/26/2001 |
| 6227007 | Submerged glass delivery throat and delivery method Process and apparatus are disclosed for delivering molten thermoplastic material from one chamber to another through a throat in a refractory wall separating said chambers. A refractory metal conduit is positioned within said refractory throat below the l... | 05/08/2001 |
| 6134921 | Directly cooled, side fired forehearth A forehearth (20) for cooling glass from a melting furnace as it flows to a feeder bowl (28) from which it is discharged to a forming machine. The forehearth is in the form of an elongate, horizontally extending insulated trough (26) with a roof formed by... | 10/24/2000 |
| 5928397 | Method to produce fused quartz particulates A method to produce fused quartz particulates from quartz sand is disclosed employing continuous withdrawal of the molten material from a furnace apparatus. The molten material is rapidly cooled as withdrawn causing thermal fracture which is followed by m... | 07/27/1999 |
| 5776221 | Method for delivering a glass stream for forming charges of glass A method for delivering a glass stream having a first inner layer and a second outer layer, including a generally vertical orifice, and delivering glass from a second source such that the glass from the second source provides an outer layer about the glas... | 07/07/1998 |
| 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 |
| 5401289 | Method of making halide fibers including casting under a reduced pressure Halide glass articles, e.g. rods, tubes and preforms for making fluoride glass fibres, are prepared by melting and/or casting the articles under a low pressure, e.g. 0.01 to 500 mbars and, during the low pressure regime, a gas flow rate of between 0.01 to... | 03/28/1995 |
| 5383949 | Glass forehearth A glass forehearth is disclosed which is made up of upstream and downstream zones each having a roof structure which divides the channel into opposed side channels separated by a central channel. The glass in the central channel is heated for at least a p... | 01/24/1995 |
| 5192353 | Method for press molding near net-shape glass articles There is disclosed a method for molding near net-shape glass articles. In general, the inventive method comprises two basic steps; (1) heating the receiving and opposing molding surfaces of a mold apparatus to different predetermined temperatures; and, (2... | 03/09/1993 |
| 5078769 | Method and apparatus for pressing hollow blanks from glass Hollow blanks of glass are pressed between a hollow mold and a plunger (10). The mold comprises an inner wall complementary to the outer side of a blank. The plunger (10) comprises an open-pore plunger head (11) having a surface (24) complementary to the ... | 01/07/1992 |
| 5043369 | Glass/glass-ceramic-plastic alloy articles This invention is directed to the preparation of alloy articles consisting essentially of glass and/or glass-ceramic and an organic thermoplastic or thermosetting polymer having a working temperature compatible with that of the glass and/or the precursor ... | 08/27/1991 |
| 4994099 | Method for fining molten glass A furnace for fining molten glass is provided in which glass flows in a substantially vertical direction prior to exiting the furnace. As it flows vertically, the glass is allowed to cool. This cooling, in turn, allows the glass to be removed from the fur... | 02/19/1991 |
| 4854960 | Forehearth A forehearth for transport of molten glass, characterized in that cooling surfaces of a material having a high heat conductivity, particularly a metallic material, are disposed in the roof of the forehearth. The metallic material may be an iron-chromium-a... | 08/08/1989 |
| 4840656 | Methods and apparatus for forming glass articles A system for forming hollow pressed glass articles utilizes a flow of cryogen that is mixed with air to provide a cooling gas that enables newly pressed articles to be removed from their molds after a thin skin of solidified glass has been formed on inter... | 06/20/1989 |
| 4789390 | Batch melting vessel lid cooling construction A lid of a glass batch melting vessel is subjected to corrosive and thermal degradation. The lid is cooled and the temperature of the exploded inner surface of the lid is controlled such that particulate and molten materials entrained in exhaust gas circu... | 12/06/1988 |
| 4778509 | Furnace for cooling molten glass A furnace for cooling molten glass, which comprises a cooling tank for slowly cooling the molten glass while the average temperature of the molten glass is within a certain range extending below and above the temperature at which the speed of absorbing bu... | 10/18/1988 |
| 4738706 | Method and device for the thermal regulation of a moving fluid mass The device comprises a three-dimensional grid of thermocouples which are immersed in a fluid, which is moving in a covered channel and has a temperature above that of its environment. Apertures in the sheathing of the channel can be progressively closed b... | 04/19/1988 |
| 4708730 | Apparatus for blow molding glass articles An apparatus for blow molding glass articles uses a mixture of cryogenic fluid and ambient air as a blowing fluid. The apparatus includes gas inlet means positioned to direct a flow of blowing fluid into the center of a blow mold, insulated manifold means... | 11/24/1987 |
| 4707175 | Method of preheating pulverulent batch material An air cooled rotary kiln collar for use in improving the delivery of preheated charge material from the rotary kiln to the second stage of a multi-stage heating process. Adustable rate fans circulate air through an annular collar at the discharge end of ... | 11/17/1987 |
| 4668271 | Ablation melting with thermal protection In a method and apparatus for liquefying material such as glass batch, primary thermal protection for the vessel is provided by a lining of the batch material, with secondary protection being provided by forced cooling of a minor portion of the vessel in ... | 05/26/1987 |
| 4666489 | Method and apparatus for feeding a rotating melter In a rotating vessel for liquefying pulverulent material wherein the pulverulent material forms a lining on sidewall portions of the vessel, pressing means are provided for creating a flattened end portion at the top of the lining onto which additional pu... | 05/19/1987 |
| 4662927 | Glass temperature preconditioning system in a distribution channel Temperature conditioning of molten glass flowing from a melter to a glassware-forming machine is described. In addition to the attempt at conditioning the molten glass in the forehearth in the usual manner, in accordance with this invention, distribution ... | 05/05/1987 |
| 4655812 | Electric heating of glass forehearth A forehearth for a glass furnace includes a roof formed of a plurality of roof blocks designed to provide below the roof blocks a central longitudinal channel and side channels on each side of the central channel. An electric heating element is positioned... | 04/07/1987 |
| 4652293 | Method of cooling molten glass A method of cooling molten glass, which comprises slowly cooling the molten glass while the average temperature of the molten glass is within a certain range extending below and above the temperature at which the speed of absorbing bubbles is highest, and... | 03/24/1987 |
| 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 |
| 4544396 | Method and apparatus for controlling currents in glass melter In a glass melting furnace, the beneficial effects of passing molten glass streams through the intensified heating at the surface of the "spring zone" are enhanced by the use of bubblers. In one aspect, the rate of bubbling is greater near a side wall of ... | 10/01/1985 |
| 4528013 | Melting furnaces A melting furnace is disclosed which heats by joule effect to supply molten material of uniform temperature at the floor of the melter. During formation of molten material, an essentially isothermal condition across a given horizontal plane of the body of... | 07/09/1985 |
| 4519814 | Two stage batch liquefaction process and apparatus Liquefying of pulverulent batch materials (e.g., glass batch) is carried out in two stages. The first stage utilizes extended gas/solid contact to heat the materials to an intermediate temperature, and may recover waste heat. The second stage rapidly liqu... | 05/28/1985 |
| 4511385 | Forehearth for molten glass and method of using same A centerline cooled forehearth for conditioning molten glass, wherein the sides of the flow channel of the forehearth are provided with external sheets of insulation. The channel is covered by a roof having vertical vents therethrough along the centerline... | 04/16/1985 |
| 4504302 | Homogenizing apparatus glass making furnace and method of homogenizing glass A glass making furnace wherein the glass constituents are fed from a hopper (10) into a melting chamber (15). Molten glass flows into the chamber (16) for passage through a homogenizer (25) for shear mixing of the glass and elimination of bubbles therefro... | 03/12/1985 |
| 4481024 | Heat recovery system for glass tank furnaces A conventional glass tank furnace used in the manufacture of glass is provided with a system for recovering heat which inevitably escapes from the furnace roof or crown above the melting and refining tanks of the furnace. A heat recovery plenum means is m... | 11/06/1984 |
