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).

  • Patent number: 11465198
    Abstract: 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: Grant
    Filed: June 4, 2018
    Date of Patent: October 11, 2022
    Assignees: UNIVERSITE GRENOBLE ALPES, INSTITUT POLYTECHNIQUE DE GRENOBLE
    Inventors: Sébastien Gravier, Georges Kapelski
  • Publication number: 20220161319
    Abstract: 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: Application
    Filed: December 20, 2019
    Publication date: May 26, 2022
    Inventors: Xavier CERUTTI, Sebastien GRAVIER
  • Patent number: 11097336
    Abstract: 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: Grant
    Filed: July 9, 2018
    Date of Patent: August 24, 2021
    Assignees: UNIVERSITE GRENOBLE ALPES, INSTITUT POLYTECHNIQUE DE GRENOBLE
    Inventors: Sébastien Gravier, Georges Kapelski
  • Publication number: 20200238369
    Abstract: 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: Application
    Filed: July 9, 2018
    Publication date: July 30, 2020
    Inventors: Sébastien GRAVIER, Georges KAPELSKI
  • Publication number: 20200222976
    Abstract: 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: Application
    Filed: June 4, 2018
    Publication date: July 16, 2020
    Inventors: Sébastien GRAVIER, Georges KAPELSKI
  • Patent number: 10222267
    Abstract: 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: Grant
    Filed: September 30, 2016
    Date of Patent: March 5, 2019
    Assignees: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES—SOFRADIR, UNIVERSITÉ GRENOBLE APLES
    Inventors: Pierre Cassaigne, Alexis Lenain, Sébastien Gravier, Georges Kapelski
  • Patent number: 10168206
    Abstract: 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: Grant
    Filed: January 23, 2017
    Date of Patent: January 1, 2019
    Assignees: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES—SOFRADIR, UNIVERSITÉ GRENOBLE ALPES
    Inventors: Pierre Cassaigne, Alexis Lenain, Sébastien Gravier
  • Publication number: 20170205281
    Abstract: 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: Application
    Filed: January 23, 2017
    Publication date: July 20, 2017
    Applicants: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES - SOFRADIR, UNIVERSITÉ GRENOBLE ALPES
    Inventors: Pierre CASSAIGNE, Alexis LENAIN, Sébastien GRAVIER
  • Publication number: 20170023412
    Abstract: 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: Application
    Filed: September 30, 2016
    Publication date: January 26, 2017
    Applicants: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES- SOFRADIR, UNIVERSITÉ GRENOBLE ALPES
    Inventors: Pierre CASSAIGNE, Alexis LENAIN, Sébastien GRAVIER, Georges KAPELSKI
  • Patent number: 9505055
    Abstract: 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: Grant
    Filed: June 1, 2012
    Date of Patent: November 29, 2016
    Assignees: UNIVERSITE JOSEPH FOURIER, INSTITUT POLYTECHNIQUE DE GRENOBLE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Sébastien Gravier, Georges Kapelski, Jean-Jacques Blandin, Charles Josserond
  • Patent number: 9464939
    Abstract: 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: Grant
    Filed: July 18, 2014
    Date of Patent: October 11, 2016
    Assignees: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES—SOFRADIR, UNIVERSITÉ GRENOBLE ALPES
    Inventors: Pierre Cassaigne, Alexis Lenain, Sébastien Gravier, Georges Kapelski
  • Publication number: 20140166228
    Abstract: 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: Application
    Filed: June 1, 2012
    Publication date: June 19, 2014
    Applicants: UNIVERSITE OSEPH FOURIER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS, INSTITUT POLYTECHNIQUE DE GRENOBLE
    Inventors: Sebastien Gravier, Georges Kapelski, Jean-Jacques Blandin, Charles Josserond
  • Publication number: 20100057381
    Abstract: 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: Application
    Filed: February 14, 2008
    Publication date: March 4, 2010
    Inventors: Thomas Pardoen, Jean-Pierre Raskin, Pierre Carbonnelle, Sébastien Gravier
  • Publication number: 20080196794
    Abstract: 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: Application
    Filed: February 20, 2008
    Publication date: August 21, 2008
    Inventors: Jean-Jacques BLANDIN, Michel Suery, Gilles Boutet, Sebastien Gravier, Sylvain Puech