Patents by Inventor Yannick Lefrere
Yannick Lefrere has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9587825Abstract: A submerged burner for a glass- or rock-melting furnace, including a plurality of in-line injectors, each injector including a cylinder-shaped mixing chamber, with an ejection orifice, a fuel-supply duct and an oxidant-supply duct opening into the mixing chamber at the cylinder jacket in a direction causing a tangential flow of the fuel and of the oxidant relative to the cylinder jacket, and a duct system making it possible for a coolant to flow inside the burner, and, preferably on either side of the alignment of injectors, placed parallel to and all along the latter, solid metal sides rising from the injectors, and protective partitions situated on the top of the solid metal sides.Type: GrantFiled: February 5, 2013Date of Patent: March 7, 2017Assignee: SAINT-GOBAIN ISOVERInventors: Yannick Lefrere, Julien Marie, David Galley, Sebastien Chesnel, Frederic Lopepe, Oleg Boulanov
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Patent number: 9493372Abstract: A plant for melting glass or rock including: a first melting tank including a batch material inlet, a heater that makes it possible to heat the batch materials until a liquid glass is obtained; a liquid glass outlet; and downstream of the melting tank, a second heating tank including metallic walls that are not covered with refractory insulating materials and that include a system of internal ducts allowing circulation of a coolant, a plurality of injectors of submerged burners, and a liquid glass outlet, in a form of an overflow, which limits a height of the glass bath in the heating tank to a value between 50 mm and 300 mm. A process for melting glass or rock uses such a melting plant.Type: GrantFiled: June 11, 2013Date of Patent: November 15, 2016Assignee: SAINT-GOBAIN ISOVERInventors: Yannick Lefrere, Frederic Lopepe, Mathieu Rayer, Gregoire Villeroy de Galhau
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Patent number: 9394192Abstract: A batch charger for charging batch materials into a glass melting furnace at a level located below the level of the molten glass, including: a body including a barrel and a mechanical system for conveying batch materials, the mechanical system being housed in the barrel; and a head removably fastened to an end of the barrel, and including a slide gate damper, and a tubular connecting part fastened to the slide gate damper and configured to be at least partially inserted into a charging orifice provided in a wall of a tank of the furnace, the slide gate damper and the connecting part including a system of internal ducts that can be connected to a source of coolant. A melting installation and a process can use such a batch charger.Type: GrantFiled: March 4, 2013Date of Patent: July 19, 2016Assignee: SAINT-GOBAIN ISOVERInventors: Gregoire Villeroy De Galhau, Yannick Lefrere, Mathieu Rayer
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Publication number: 20150175464Abstract: A plant for melting glass or rock including: a first melting tank including a batch material inlet, a heater that makes it possible to heat the batch materials until a liquid glass is obtained; a liquid glass outlet; and downstream of the melting tank, a second heating tank including metallic walls that are not covered with refractory insulating materials and that include a system of internal ducts allowing circulation of a coolant, a plurality of injectors of submerged burners, and a liquid glass outlet, in a form of an overflow, which limits a height of the glass bath in the heating tank to a value between 50 mm and 300 mm. A process for melting glass or rock uses such a melting plant.Type: ApplicationFiled: June 11, 2013Publication date: June 25, 2015Applicant: SAINT-GOBAIN ISOVERInventors: Yannick Lefrere, Frederic Lopepe, Mathieu Rayer, Gregoire Villeroy de Galhau
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Publication number: 20150013386Abstract: A batch charger for charging batch materials into a glass melting furnace at a level located below the level of the molten glass, including: a body including a barrel and a mechanical system for conveying batch materials, the mechanical system being housed in the barrel; and a head removably fastened to an end of the barrel, and including a slide gate damper, and a tubular connecting part fastened to the slide gate damper and configured to be at least partially inserted into a charging orifice provided in a wall of a tank of the furnace, the slide gate damper and the connecting part including a system of internal ducts that can be connected to a source of coolant. A melting installation and a process can use such a batch charger.Type: ApplicationFiled: March 4, 2013Publication date: January 15, 2015Applicant: SAINT-GOBAIN ISOVERInventors: Gregoire Villeroy De Galhau, Yannick Lefrere, Mathieu Rayer
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Publication number: 20150000343Abstract: A submerged burner for a glass- or rock-melting furnace, including a plurality of in-line injectors, each injector including a cylinder-shaped mixing chamber, with an ejection orifice, a fuel-supply duct and an oxidant-supply duct opening into the mixing chamber at the cylinder jacket in a direction causing a tangential flow of the fuel and of the oxidant relative to the cylinder jacket, and a duct system making it possible for a coolant to flow inside the burner, and, preferably on either side of the alignment of injectors, placed parallel to and all along the latter, solid metal sides rising from the injectors, and protective partitions situated on the top of the solid metal sides.Type: ApplicationFiled: February 5, 2013Publication date: January 1, 2015Applicant: Saint-Gobain IsoverInventors: Yannick Lefrere, Julien Marie, David Galley, Sebastien Chesnel, Frederic Lopepe, Oleg Boulanov
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Patent number: 8871662Abstract: The subject of the invention is a mineral wool, the glass fibers of which have a chemical composition substantially free of boron oxide and comprising the following constituents in the limits defined below, expressed in percentages by weight: 60 to 75 SiO2; 0 to 4 Al2O3; 17 to 22 Na2O; 5 to 15 CaO; 0 to 2 Fe2O3; and 0 to 3 P2O5.Type: GrantFiled: September 10, 2007Date of Patent: October 28, 2014Assignee: Saint-Gobain IsoverInventors: Emmanuel Lecomte, Yannick Lefrere
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Patent number: 8127571Abstract: The present invention relates to a method of refining lithium aluminosilicate glass capable of being controllably ceramized and free of arsenic oxide, antimony oxide and tin oxide, in which at least 0.05% by weight of at least one sulfide is added to the glass batch materials and said materials are melted at a temperature below 1750° C. The invention also relates to the glass-ceramics obtained from said colored glass, especially glass colored by vanadium oxide, and cooktops and cooking utensils including such glass-ceramics.Type: GrantFiled: October 25, 2007Date of Patent: March 6, 2012Assignee: Eurokera S.N.C.Inventors: Dorothee Martin, Yannick Lefrere
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Patent number: 7704902Abstract: The invention relates to glass fibers having a chemical composition that contains the following constituents in the limits defined hereafter and expressed in percentage by weight, namely: 38 to 49 SiO2; 15 to 25 Al2O3; 1 to 15 CaO; 0 to 4 MgO; 14 to 25 Na2O; 0 to 10 K2O; 0 to 8 B2O3; 0 to 3 Fe2O3; and 0 to 3 P2O5.Type: GrantFiled: March 31, 2006Date of Patent: April 27, 2010Assignee: Saint-Gobain IsoverInventors: Bertrand Maquin, Jérôme Lalande, Yannick Lefrere
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Publication number: 20100069219Abstract: The present invention relates to a method of refining lithium aluminosilicate glass capable of being controllably ceramized and free of arsenic oxide, antimony oxide and tin oxide, in which at least 0.05% by weight of at least one sulfide is added to the glass batch materials and said materials are melted at a temperature below 1750° C. The invention also relates to the glass-ceramic obtained from said colored glass, especially glass colored by vanadium oxide. Application especially for the manufacture of cooktops and cooking utensils.Type: ApplicationFiled: October 25, 2007Publication date: March 18, 2010Applicant: EUROKERA S.N.C.Inventors: Dorothee Martin, Yannick Lefrere
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Publication number: 20090258776Abstract: The subject of the invention is a mineral wool, the glass fibres of which have a chemical composition substantially free of boron oxide and comprising the following constituents in the limits defined below, expressed in percentages by weight: 60 to 75 SiO2; 0 to 4 Al2O3; 17 to 22 Na2O; 5 to 15 CaO; 0 to 2 Fe2O3; and 0 to 3 P2O5.Type: ApplicationFiled: September 10, 2007Publication date: October 15, 2009Applicant: Saint-Gobain IsoverInventors: Emmanuel Lecomte, Yannick Lefrere
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Publication number: 20080182317Abstract: The invention relates to glass fibres having a chemical composition that contains the following constituents in the limits defined hereafter and expressed in percentage by weight, namely: 38 to 49 SiO2; 15 to 25 Al2O3; 1 to 15 CaO; 0 to 4 MgO; 14 to 25 Na2O; 0 to 10 K2O; 0 to 8 B2O3; 0 to 3 Fe2O3; and 0 to 3 P2O5.Type: ApplicationFiled: March 31, 2006Publication date: July 31, 2008Applicant: SAINT-GOBAIN ISOVERInventors: Bertrand Maquin, Jerome Lalande, Yannick Lefrere