Patents by Inventor Fabrice PROST

Fabrice PROST 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).

  • Publication number: 20240369103
    Abstract: A hinged component with one degree of freedom includes at least two concentric rings, movable in rotation in relation to one another around a central axis, defining a friction interface therebetween and including: an outer ring having an inner friction surface and an inner ring having an outer friction surface and an inner friction surface intended to receive a movable member guided by the component in rotation, oscillation and/or translation.
    Type: Application
    Filed: July 8, 2024
    Publication date: November 7, 2024
    Applicant: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Fabrice PROST, Pierrick PAVALLIER
  • Patent number: 12135060
    Abstract: A member for guiding an element mobile in oscillation or rotation is presented. The member has a body made of a hardened metallic material, provided with a bore for assembling the mobile element, having cavities that are distributed discontinuously in the bore and capable of acting as grease reserves, and having optional grease supply. In the bore are defined a bearing surface outside of the cavities and the grease supply, and a non-bearing surface in the cavities and the grease supply. The bore includes at least one zone with: cavities having a depth of between 2 and 5 mm, and a quantity of grease in the cavities per bearing surface of between 0.05 and 0.3 g/cm2. A mechanical system having such a member and a method for manufacturing such a member is also contemplated.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: November 5, 2024
    Assignee: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Fabrice Prost, Pierrick Pavallier
  • Patent number: 12098744
    Abstract: A guiding member, having a body provided with a bore for mounting a mobile element is presented. The body consists of a metallic material. The bore has a surface layer treated against jamming over a diffusion depth of less than or equal to 0.6 mm. The surface layer has a hardness of greater than or equal to 500 Hv1 over a depth of between 5 and 50 ?m.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: September 24, 2024
    Assignee: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Fabrice Prost, Pierrick Pavallier
  • Patent number: 12031578
    Abstract: A hinged component with one degree of freedom includes at least two concentric rings, movable in rotation in relation to one another around a central axis, defining a friction interface therebetween and including: an outer ring having an inner friction surface and an inner ring having an outer friction surface and an inner friction surface intended to receive a movable member guided by the component in rotation, oscillation and/or translation.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: July 9, 2024
    Assignee: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Fabrice Prost, Pierrick Pavallier
  • Patent number: 12012657
    Abstract: Disclosed is a part including a metal substrate, a non-hydrogenated amorphous ta-C or aC carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat included, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.35 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: June 18, 2024
    Assignee: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Laurent Bombillon, Fabrice Prost
  • Patent number: 11732343
    Abstract: Disclosed is a part comprising a metal substrate, a non-hydrogenated amorphous ta-C or aC carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat included, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.3 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: August 22, 2023
    Assignee: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Laurent Bombillon, Fabrice Prost
  • Publication number: 20230213068
    Abstract: A guide device includes: a metal component provided with a friction surface intended to receive a mating part in sliding frictional contact; and a detection sensing system of a wear of the friction surface or of a clearance between the friction surface and the mating part. The detection system includes one or more sensors; and a wireless communication system is connected to the detection system and configured to transmit information relating to wear or clearance out of the guide device.
    Type: Application
    Filed: May 28, 2021
    Publication date: July 6, 2023
    Applicant: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Pierrick PAVALLIER, Fabrice PROST
  • Publication number: 20230204067
    Abstract: A guide device includes: a metal component in the form of a bush provided with a friction surface intended to receive a mating part in frictional contact by sliding with oscillation; a wear sensing system of the friction surface having one or more sensors; and a wireless communication system connected to the detection system and configured to transmit information relating to the wear of the friction surface out of the guide device. The sensor or sensors are arranged exclusively on one longitudinal side or on two longitudinal sides of the bush, each longitudinal side being defined over at most two fifths of the length of the annular bush.
    Type: Application
    Filed: May 28, 2021
    Publication date: June 29, 2023
    Applicant: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Pierrick PAVALLIER, Fabrice PROST
  • Patent number: 11624399
    Abstract: The present invention relates to a mechanical system (1), comprising a bearing (4) and a shaft (10) coupled to the bearing (4), especially for an internal combustion engine, being subjected to average contact pressures of less than 200 MPa. The shaft (10) has at least one area (12) provided with an anti-seizing surface coating (20), having a surface hardness at least twice that of the bearing (4), and a microtexturation (30) comprised of a set of individual microcavities (31), distributed in said area (12). The invention also relates to a method for manufacturing such a mechanical system (1).
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: April 11, 2023
    Assignee: H.E.F.
    Inventors: Mohamadou Bocar Diew, Yves René Alexis Gachon, Fabrice Prost
  • Publication number: 20220260115
    Abstract: A member for guiding an element mobile in oscillation or rotation is presented. The member has a body made of a hardened metallic material, provided with a bore for assembling the mobile element, having cavities that are distributed discontinuously in the bore and capable of acting as grease reserves, and having optional grease supply. In the bore are defined a bearing surface outside of the cavities and the grease supply, and a non-bearing surface in the cavities and the grease supply. The bore includes at least one zone with: cavities having a depth of between 2 and 5 mm, and a quantity of grease in the cavities per bearing surface of between 0.05 and 0.3 g/cm2. A mechanical system having such a member and a method for manufacturing such a member is also contemplated.
    Type: Application
    Filed: May 15, 2020
    Publication date: August 18, 2022
    Applicant: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Fabrice PROST, Pierrick PAVALLIER
  • Publication number: 20220220999
    Abstract: A guiding member, having a body provided with a bore for mounting a mobile element is presented. The body consists of a metallic material. The bore has a surface layer treated against jamming over a diffusion depth of less than or equal to 0.6 mm. The surface layer has a hardness of greater than or equal to 500 Hv1 over a depth of between 5 and 50 ?m.
    Type: Application
    Filed: May 15, 2020
    Publication date: July 14, 2022
    Applicant: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Fabrice PROST, Pierrick PAVALLIER
  • Publication number: 20210310112
    Abstract: Disclosed is a part comprising a metal substrate, a non-hydrogenated amorphous ta-C or aC carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat included, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.3 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.
    Type: Application
    Filed: June 17, 2019
    Publication date: October 7, 2021
    Inventors: Laurent BOMBILLON, Fabrice PROST
  • Patent number: 11111400
    Abstract: Some embodiments are directed to a multimaterial powder used in the field of metallurgy and plasturgy. The multimaterial powder includes support particles having a median particle size distribution between 1 ?m and 100 ?m and functionalising particles having a median particle size distribution that is a factor of 10 to 1000 lower relative to the support particles. The powder is characterised in that the support particles and the functionalising particles form composite grains having a core-shell structure that each have a core formed by a support particle, and a shell, that covers between 10 and 100% of the surface of the support particle and which is formed by at least one surface layer of the functionalising particles.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: September 7, 2021
    Assignee: H.E.F.
    Inventors: Constantin Iacob, Sébastien Bucher, Fabrice Prost, Christophe Heau
  • Publication number: 20210270313
    Abstract: A hinged component with one degree of freedom includes at least two concentric rings, movable in rotation in relation to one another around a central axis, defining a friction interface therebetween and including: an outer ring having an inner friction surface and an inner ring having an outer friction surface and an inner friction surface intended to receive a movable member guided by the component in rotation, oscillation and/or translation.
    Type: Application
    Filed: July 3, 2019
    Publication date: September 2, 2021
    Applicant: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Fabrice PROST, Pierrick PAVALLIER
  • Patent number: 11098674
    Abstract: Various implementations include a combustion engine piston, including a skirt in a counter-part and including a first contact area of the piston in the counter-part, a head which extends transverse to a central axis, and a ring carrier which comprises at least two lands and at least two grooves for receiving the rings, including a first land adjoining the head and a second land situated between the first land and the skirt, wherein the lands include at least one contact land having a diameter greater than a minimum diameter of the skirt to form a second contact area of the piston in the counter-part, and wherein at least one contact land comprises a friction-reducing surface coating, formed at least on a radial sector covering an angle of at least 30 degrees, and up to on a single sector covering an angle of 360 degrees.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 24, 2021
    Assignee: H.E.F.
    Inventors: Fabrice Prost, Christophe Heau, Romain Montelimard
  • Publication number: 20210254220
    Abstract: Disclosed is a part including a metal substrate, a non-hydrogenated amorphous ta-C or aC carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat included, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.35 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.
    Type: Application
    Filed: June 17, 2019
    Publication date: August 19, 2021
    Inventors: Laurent BOMBILLON, Fabrice PROST
  • Patent number: 11001678
    Abstract: Some embodiments are directed to the manufacture of functional composites (electrical conductors, thermal conductors, etc.) produced from coated powders.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 11, 2021
    Assignee: H.E.F.
    Inventors: Constantin Iacob, Sébastien Bucher, Fabrice Prost
  • Publication number: 20210123395
    Abstract: Various implementations include a combustion engine piston, including a skirt in a counter-part and including a first contact area of the piston in the counter-part, a head which extends transverse to a central axis, and a ring carrier which comprises at least two lands and at least two grooves for receiving the rings, including a first land adjoining the head and a second land situated between the first land and the skirt, wherein the lands include at least one contact land having a diameter greater than a minimum diameter of the skirt to form a second contact area of the piston in the counter-part, and wherein at least one contact land comprises a friction-reducing surface coating, formed at least on a radial sector covering an angle of at least 30 degrees, and up to on a single sector covering an angle of 360 degrees.
    Type: Application
    Filed: January 10, 2018
    Publication date: April 29, 2021
    Inventors: Fabrice PROST, Christophe HEAU, Romain MONTELIMARD
  • Patent number: 10858720
    Abstract: In a method of treating a nitrided/nitrocarburized workpiece, at least a portion of the workpiece is subjected to a first step in which at least one laser beam is moved in at least one pass over the portion, until the surface layer of the portion is transformed in part or in full, and until the distribution of the nitrogen concentration in the diffusion zone is modified. In a second step at least one laser beam is moved in at least one pass over said portion so as to enable the nitrogen concentration in the underlying diffusion layer to be reduced.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: December 8, 2020
    Assignee: H.E.F.
    Inventors: Stéphan Grandjean, Fabrice Prost
  • Publication number: 20200132111
    Abstract: The present invention relates to a mechanical system (1), comprising a bearing (4) and a shaft (10) coupled to the bearing (4), especially for an internal combustion engine, being subjected to average contact pressures of less than 200 MPa. The shaft (10) has at least one area (12) provided with an anti-seizing surface coating (20), having a surface hardness at least twice that of the bearing (4), and a microtexturation (30) comprised of a set of individual microcavities (31), distributed in said area (12). The invention also relates to a method for manufacturing such a mechanical system (1).
    Type: Application
    Filed: July 3, 2018
    Publication date: April 30, 2020
    Applicant: H.E.F.
    Inventors: Mohamadou Bocar DIEW, Yves René Alexis GACHON, Fabrice PROST