Patents by Inventor FABIEN HELLOT

FABIEN HELLOT 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: 20230191851
    Abstract: A tire (10) for a passenger vehicle comprises a tread comprising at least one regulation wear indicator (46) defining a regulation wear threshold, a tread layer (52) comprising an elastomeric tread material exhibiting a complex dynamic shear modulus G*_1 and a dynamic loss tanD0_1, and a backing layer (54) for the tread layer (52) that comprises an elastomeric backing material exhibiting a complex dynamic shear modulus G*_2 and a dynamic loss tanD0_2 such that tanD0_2?0.37×tanD0_1 and G*2?0.90×G*1.
    Type: Application
    Filed: April 22, 2021
    Publication date: June 22, 2023
    Inventors: BENOIT DURAND-GASSELIN, MARIE-LAURE FRANCOIS, FABIEN HELLOT
  • Publication number: 20220388344
    Abstract: A tire for a vehicle comprises a tread (2), of which the central part of the tread (2) comprises at least two rubber compounds (221, 222), making up at least 90% of its volume. The first compound (221) is radially on the outside of the second compound (222) and makes up at least 40% and at most 60% of the volume of the central part. The second rubber compound (222) has a Shore hardness DS2 at least equal to 5 plus the Shore hardness DS1 of the first compound (221) and dynamic losses at a temperature of 0° C. and 23° C. that are at least equal to those of the first rubber compound (221). The axially outer parts of the tread are made up of a third compound (223) capable of touching the ground, having a stiffness and a hysteresis that are lower than those of the first compound.
    Type: Application
    Filed: December 3, 2020
    Publication date: December 8, 2022
    Inventors: BENOIT DURAND-GASSELIN, FABIEN HELLOT, MARIE-LAURE FRANCOIS
  • Publication number: 20220041013
    Abstract: A tire is provided with an external sidewall, the said external sidewall comprising at least one composition based on at least from 15 to 70 phr of isoprene elastomer, from 25 to 85 phr of butadiene elastomer, from 10 to 100 phr of carbon black, from 0.75 to 2.7 phr of polyethylene oxide derivative of general formula (Chem 1) below, in which n is a number within a range extending from 20 to 25, and m is a number within a range extending from 13 to 17, from 0.
    Type: Application
    Filed: December 18, 2019
    Publication date: February 10, 2022
    Inventors: FABIEN HELLOT, SYLVAIN MAYER
  • Publication number: 20210370722
    Abstract: A passenger vehicle tire having rolling resistance without negatively affecting the grip and behaviour. The tread (2) has a radial height HS between 5 mm and 8 mm, a volumetric void ratio TEV between 22% and 30%, a total volume VCP of the main voids (241) at least equal to 80% of the total volume VC of the voids (24), and comprises an elastomeric compound having a glass transition temperature Tg between 22° C. and 5° C., a Shore A hardness between 45 and 65, and a dynamic loss tg? at 23° C. at least equal to 0.13 and at most equal to 0.39. The metal reinforcers of the working layers (41, 42) are steel monofilaments having a cross section S with a smallest dimension Dmin between 0.20 mm and 0.50 mm. The monofilaments distributed at a density dT between 100 threads/dm 200 threads/dm, each working layer (41, 42) having a mean radial thickness ET between D+0.1 mm and D+0.6 mm.
    Type: Application
    Filed: November 22, 2018
    Publication date: December 2, 2021
    Inventors: Olivier MUHLHOFF, Benoìt DURAND-GASSELIN, Fabien HELLOT
  • Patent number: 11186124
    Abstract: Passenger vehicle tire, the tread having edge parts (11), provided with a plurality of transversely or obliquely oriented cuts (3) having a width at most equal to 2 mm and a depth at least equal to 75% of the thickness of the tread that is intended to be worn away, more than half of the cuts (3) comprising a protuberance that locally reduces the width of the cut (3) to a width at least equal to 0.2 mm and at most equal to 0.5 mm. The tread material which comes into contact with the road surface in the new state has a Shore A hardness at least equal to 48 and at most equal to 57, a loss at 60° C. at least equal to 12% and at most equal to 20%, a glass transition temperature Tg at least equal to ?20° C. and at most equal to ?10° C.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: November 30, 2021
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Frédéric Bourgeois, Fabien Hellot
  • Patent number: 10889147
    Abstract: A rubber composition is based on at least one diene elastomer, a reinforcing filler, a crosslinking system and a hydrocarbon-based resin. The hydrocarbon-based resin has a number-average molecular weight (Mn) of between 700 and 1000 g/mol, an average molecular weight Mz of greater than 6000 g/mol and a polydispersity index (PI) of greater than 2.4.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: January 12, 2021
    Assignee: Compagnie Generale Des Etablissements Michelin
    Inventors: Julien Chatard, Benoit De Gaudemaris, Alain Hut, Fabien Hellot, Francois Dimier
  • Publication number: 20200376897
    Abstract: Passenger vehicle tire, the tread having edge parts (11), provided with a plurality of transversely or obliquely oriented cuts (3) having a width at most equal to 2 mm and a depth at least equal to 75% of the thickness of the tread that is intended to be worn away, more than half of the cuts (3) comprising a protuberance that locally reduces the width of the cut (3) to a width at least equal to 0.2 mm and at most equal to 0.5 mm. The tread material which comes into contact with the road surface in the new state has a Shore A hardness at least equal to 48 and at most equal to 57, a loss at 60° C. at least equal to 12% and at most equal to 20%, a glass transition temperature Tg at least equal to ?20° C. and at most equal to ?10° C.
    Type: Application
    Filed: April 4, 2018
    Publication date: December 3, 2020
    Inventors: Frédéric BOURGEOIS, Fabien HELLOT
  • Patent number: 10808105
    Abstract: A rubber composition is based on at least one diene elastomer with a glass transition temperature (Tg) of less than ?40° C., one reinforcing filler at a content from 60 to 110 parts by weight per hundred parts by weight of elastomer (phr), one vulcanization system and one combination of plasticizers, the said combination of plasticizers comprising more than 10 phr of at least one hydrocarbon resin with a glass transition temperature (Tg) of between ?40° C. and 20° C. and at least one supplementary plasticizer selected from plasticizing oils, hydrocarbon resins with a Tg of greater than 20° C. and their mixtures, the total content of plasticizer being within a range extending from 25 to 65 phr, the contents of reinforcing filler and of plasticizer being such that the ratio of the total content of filler to the total content of plasticizer is within a range extending from 1.8 to 2.5.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: October 20, 2020
    Assignee: Compagnie Generale Des Etablissements Michelin
    Inventors: Pierre Lesage, Fabien Hellot
  • Publication number: 20200223259
    Abstract: A tire is provided with an external sidewall, the said external sidewall comprising at least one composition based on at least from 30 to 60 phr of isoprene elastomer, from 40 to 70 phr of butadiene elastomer, from 10 to 70 phr of carbon black, from 5 to 25 phr of hydrocarbon resin predominantly composed of units resulting from C5 monomers, from 1.2 to 10 phr of anti-ozone wax, and a crosslinking system.
    Type: Application
    Filed: June 27, 2018
    Publication date: July 16, 2020
    Inventors: FABIEN HELLOT, SYLVAIN MAYER, FLORIAN DULONG
  • Publication number: 20180223083
    Abstract: A rubber composition is based on at least one diene elastomer with a glass transition temperature (Tg) of less than ?40° C., one reinforcing filler at a content from 60 to 110 parts by weight per hundred parts by weight of elastomer (phr), one vulcanization system and one combination of plasticizers, the said combination of plasticizers comprising more than 10 phr of at least one hydrocarbon resin with a glass transition temperature (Tg) of between ?40° C. and 20° C. and at least one supplementary plasticizer selected from plasticizing oils, hydrocarbon resins with a Tg of greater than 20° C. and their mixtures, the total content of plasticizer being within a range extending from 25 to 65 phr, the contents of reinforcing filler and of plasticizer being such that the ratio of the total content of filler to the total content of plasticizer is within a range extending from 1.8 to 2.5.
    Type: Application
    Filed: July 7, 2016
    Publication date: August 9, 2018
    Inventors: PIERRE LESAGE, FABIEN HELLOT
  • Publication number: 20180223082
    Abstract: A rubber composition is based on at least one diene elastomer with a glass transition temperature (Tg) of less than ?40° C., one reinforcing filler at a content from 50 to 70 parts by weight per hundred parts by weight of elastomer (phr), one vulcanization system and one combination of plasticizers, the said combination of plasticizers comprising more than 10 phr of at least one hydrocarbon resin with a glass transition temperature (Tg) of between ?40° C. and 20° C. and at least one supplementary plasticizer selected from plasticizing oils, hydrocarbon resins with a Tg of greater than 20° C. and their mixtures, the total content of plasticizer being within a range extending from 15 to 35 phr, the contents of reinforcing filler and of plasticizer being such that the ratio of the total content of filler to the total content of plasticizer is within a range extending from 2 to 3.4.
    Type: Application
    Filed: July 7, 2016
    Publication date: August 9, 2018
    Inventors: PIERRE LESAGE, FABIEN HELLOT
  • Publication number: 20180001702
    Abstract: A rubber composition is based on at least one diene elastomer, a reinforcing filler, a crosslinking system and a hydrocarbon-based resin. The hydrocarbon-based resin has a number-average molecular weight (Mn) of between 700 and 1000 g/mol, an average molecular weight Mz of greater than 6000 g/mol and a polydispersity index (PI) of greater than 2.4.
    Type: Application
    Filed: December 18, 2015
    Publication date: January 4, 2018
    Inventors: JULIEN CHATARD, BENOIT DE GAUDEMARIS, ALAIN HUT, FABIEN HELLOT, FRANCOIS DIMIER