Patents by Inventor Sébastien Gravier
Sébastien Gravier 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: 11465198Abstract: An injection device and method for producing at least one metallic glass part, in which a vertical piston is able to move in a vertical direction, a top end portion of the piston being suitable for being engaged in an injection chamber of a mould linked to a cavity of this mould and open at the bottom; the piston having a top end face on which an element made from metallic glass to be introduced into said chamber can be positioned, the top face of the piston having a concave shape suitable for receiving a bottom portion of the element made from metallic glass. A heating means situated under the mould comprises induction coils, such that, when the piston is in an intermediate position, the majority of the metallic element is situated in the space surrounded by the induction coils.Type: GrantFiled: June 4, 2018Date of Patent: October 11, 2022Assignees: UNIVERSITE GRENOBLE ALPES, INSTITUT POLYTECHNIQUE DE GRENOBLEInventors: Sébastien Gravier, Georges Kapelski
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Publication number: 20220161319Abstract: Device and method for injection moulding a metal alloy intended for manufacturing at least one part made of an amorphous metal alloy or metallic glass, wherein: an injection mould (2) delimits a cavity that has a receiving face (4) and a frontal moulding face (5) opposite the receiving face, at least one sacrificial shaping insert (7) is placed in said cavity and has a rear face (8), at least one contact zone of which is adjacent to at least one contact zone of said receiving face of the cavity and a front face (9) that is situated opposite said moulding face of the mould and provided with a recessed shape, and an injection piston (I I) is movable in a chamber (12) of the mould and communicates with the moulding impression.Type: ApplicationFiled: December 20, 2019Publication date: May 26, 2022Inventors: Xavier CERUTTI, Sebastien GRAVIER
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Patent number: 11097336Abstract: A device and method for producing metal slugs, in which: a movable support has a plurality of cavities separated by partition walls, such that the cavities travel over a path, a feeding means is positioned above a location on said path and is capable of forming a stream of molten metal, flowing under the effect of gravity, such that, during the continuous movement of the movable support, the continuous stream of molten metal from the feeding means is divided or fragmented into slugs formed successively in said cavities, under the effect of said partition walls.Type: GrantFiled: July 9, 2018Date of Patent: August 24, 2021Assignees: UNIVERSITE GRENOBLE ALPES, INSTITUT POLYTECHNIQUE DE GRENOBLEInventors: Sébastien Gravier, Georges Kapelski
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Publication number: 20200238369Abstract: A device and method for producing metal slugs, in which: a movable support has a plurality of cavities separated by partition walls, such that the cavities travel over a path, a feeding means is positioned above a location on said path and is capable of forming a stream of molten metal, flowing under the effect of gravity, such that, during the continuous movement of the movable support, the continuous stream of molten metal from the feeding means is divided or fragmented into slugs formed successively in said cavities, under the effect of said partition walls.Type: ApplicationFiled: July 9, 2018Publication date: July 30, 2020Inventors: Sébastien GRAVIER, Georges KAPELSKI
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Publication number: 20200222976Abstract: An injection device and method for producing at least one metallic glass part, in which a vertical piston is able to move in a vertical direction, a top end portion of the piston being suitable for being engaged in an injection chamber of a mould linked to a cavity of this mould and open at the bottom; the piston having a top end face on which an element made from metallic glass to be introduced into said chamber can be positioned, the top face of the piston having a concave shape suitable for receiving a bottom portion of the element made from metallic glass. A heating means situated under the mould comprises induction coils, such that, when the piston is in an intermediate position, the majority of the metallic element is situated in the space surrounded by the induction coils.Type: ApplicationFiled: June 4, 2018Publication date: July 16, 2020Inventors: Sébastien GRAVIER, Georges KAPELSKI
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Patent number: 10222267Abstract: The detection device comprises a cold finger which performs the thermal connection between a detector and a cooling system. The cold finger comprises at least one side wall at least partially formed by an area made from the amorphous metal alloy. Advantageously, the whole of the cold finger is made from the amorphous metal alloy.Type: GrantFiled: September 30, 2016Date of Patent: March 5, 2019Assignees: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES—SOFRADIR, UNIVERSITÉ GRENOBLE APLESInventors: Pierre Cassaigne, Alexis Lenain, Sébastien Gravier, Georges Kapelski
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Patent number: 10168206Abstract: The detection device comprises a cold finger which performs thermal connection between a detector fitted on a cooling plate and a cooling system. The cold finger comprises at least one side wall at least partially formed by an area made from the hafnium-based amorphous metal alloy. Advantageously, the whole of the cold finger is made from the hafnium-based amorphous metal alloy.Type: GrantFiled: January 23, 2017Date of Patent: January 1, 2019Assignees: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES—SOFRADIR, UNIVERSITÉ GRENOBLE ALPESInventors: Pierre Cassaigne, Alexis Lenain, Sébastien Gravier
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Publication number: 20170205281Abstract: The detection device comprises a cold finger which performs thermal connection between a detector fitted on a cooling plate and a cooling system. The cold finger comprises at least one side wall at least partially formed by an area made from the hafnium-based amorphous metal alloy. Advantageously, the whole of the cold finger is made from the hafnium-based amorphous metal alloy.Type: ApplicationFiled: January 23, 2017Publication date: July 20, 2017Applicants: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES - SOFRADIR, UNIVERSITÉ GRENOBLE ALPESInventors: Pierre CASSAIGNE, Alexis LENAIN, Sébastien GRAVIER
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Publication number: 20170023412Abstract: The detection device comprises a cold finger which performs the thermal connection between a detector and a cooling system. The cold finger comprises at least one side wall at least partially formed by an area made from the amorphous metal alloy. Advantageously, the whole of the cold finger is made from the amorphous metal alloy.Type: ApplicationFiled: September 30, 2016Publication date: January 26, 2017Applicants: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES- SOFRADIR, UNIVERSITÉ GRENOBLE ALPESInventors: Pierre CASSAIGNE, Alexis LENAIN, Sébastien GRAVIER, Georges KAPELSKI
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Patent number: 9505055Abstract: A method for removing a part from a mold and to a machine for molding the part, the part made of a material having a glass-transition temperature and a melting temperature that is higher than the glass-transition temperature, and which is shaped in the cavity of a mold, includes at least two mold portions defining the shaping cavity therebetween. The mold is at a temperature between the glass-transition temperature and the melting temperature. The method includes opening the mold by spacing apart the mold portions, locally spraying a cooling gas toward the part remaining in a portion of the mold using at least one nozzle, and, after a predetermined time period following the start of spraying the gas, ejecting the part from the portion of the mold, the time period being such that the part reaches a temperature that is lower than the glass-transition temperature thereof.Type: GrantFiled: June 1, 2012Date of Patent: November 29, 2016Assignees: UNIVERSITE JOSEPH FOURIER, INSTITUT POLYTECHNIQUE DE GRENOBLE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)Inventors: Sébastien Gravier, Georges Kapelski, Jean-Jacques Blandin, Charles Josserond
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Patent number: 9464939Abstract: The detection device comprises a cold finger which performs the thermal connection between a detector and a cooling system. The cold finger comprises at least one side wall at least partially formed by an area made from the amorphous metal alloy. Advantageously, the whole of the cold finger is made from the amorphous metal alloy.Type: GrantFiled: July 18, 2014Date of Patent: October 11, 2016Assignees: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES—SOFRADIR, UNIVERSITÉ GRENOBLE ALPESInventors: Pierre Cassaigne, Alexis Lenain, Sébastien Gravier, Georges Kapelski
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Publication number: 20140166228Abstract: A method for removing a part from a mold and to a machine for molding said part, the part made of a material having a glass-transition temperature and a melting temperature that is higher than the glass-transition temperature, and which is shaped in the cavity of a mold, includes at least two mold portions defining said shaping cavity therebetween. The mold is at a temperature between said glass-transition temperature and said melting temperature. The method comprises opening the mold by spacing apart said mold portions, locally spraying a cooling gas toward the part remaining in a portion of the mold using at least one nozzle, and, after a predetermined time period following the start of spraying the gas, ejecting the part from said portion of the mold, the time period being such that the part reaches a temperature that is lower than the glass-transition temperature thereof.Type: ApplicationFiled: June 1, 2012Publication date: June 19, 2014Applicants: UNIVERSITE OSEPH FOURIER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS, INSTITUT POLYTECHNIQUE DE GRENOBLEInventors: Sebastien Gravier, Georges Kapelski, Jean-Jacques Blandin, Charles Josserond
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Publication number: 20100057381Abstract: This invention provides a method and device for imposing and determining mechanical stress and/or strain, on micro-scale and nano-scale beams, films or multi-layers of materials such as metallic materials, polymer materials, ceramic materials, carbon-based materials and silicon-based materials using a set of micro- or nano-machines. The present invention also provides methods to derive and modify various properties or state of such nano- or microstructures, among others mechanical properties, and to measure the external stimulus that they are subjected to.Type: ApplicationFiled: February 14, 2008Publication date: March 4, 2010Inventors: Thomas Pardoen, Jean-Pierre Raskin, Pierre Carbonnelle, Sébastien Gravier
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Publication number: 20080196794Abstract: The invention is related to bulk metallic glass/metal alloys, a method for their production and their uses. Especially, the invention is concerned with composite materials resulting from the co-deformation of a bulk metallic glass and a metal. More specifically the method for the production of a composite of at least one bulk metallic glass and at least one metal, comprises the step of co-deforming the bulk metallic glass and the metal at a temperature comprised in the supercooled liquid region of the bulk metallic glass.Type: ApplicationFiled: February 20, 2008Publication date: August 21, 2008Inventors: Jean-Jacques BLANDIN, Michel Suery, Gilles Boutet, Sebastien Gravier, Sylvain Puech