Patents Assigned to Societe de Technologie Michelin
  • Publication number: 20120132337
    Abstract: A tread for passenger-vehicle tire having radially on the outside a running surface and comprising a plurality of elements, at least certain of these elements being provided with at least one incision delimited by two opposite faces, this incision consisting of a succession of thin sections and of thick sections placed in an alternating manner, the thin sections being inclined at an angle A equal to no more than 40 degrees, this angle being measured relative to a direction perpendicular to the running surface of the tread and passing through the points of the incision on the running surface of the tread, the thick sections forming an angle B of between 60 degrees and 120 degrees with a direction perpendicular to the running surface of the tread, and the thin sections having a width e less than the width E of the thick sections, the width of the thin sections being such that, when they go through the contact patch, the walls delimiting said thin sections are in contact, and the width of the thick sections bein
    Type: Application
    Filed: December 2, 2009
    Publication date: May 31, 2012
    Applicants: Michelin Recherche et Technique S.A., Societe De Technologie Michelin
    Inventors: Pierric Toulemont, Patrice Fraysee
  • Publication number: 20120125512
    Abstract: Metal cord (C-1) with three layers (C1, C2, C3), which is rubberized in situ, comprising a core or first layer (10, C1) of diameter d1, around which there are wound together in a helix at a pitch p2, in a second layer (C2), N wires (11) of diameter d2, N varying from 5 to 7, around which there are wound together in a helix at a pitch p3, in a third layer (C3), P wires (12) of diameter d3, the said cord being characterized in that it has the following characteristics (d1, d2, d3, p2 and p3 being expressed in mm): 0.08?d1?0.40; 0.08?d2?0.35; 0.08?d3?0.35; 5?(d1+d2)<p2?p3<10?(d1+2d2+d3); over any 2 cm length of cord, a rubber composition called “filling rubber” (13) is present in each of the capillaries (14) lying on the one hand between the core (C1) and the N wires of the second layer (C2), and on the other hand between the N wires of the second layer (C2) and the P wires of the third layer (C3); the content of filling rubber in the cord is comprised between 5 and 30 mg per gram of cord.
    Type: Application
    Filed: November 10, 2009
    Publication date: May 24, 2012
    Applicants: Michelin Recherchhe et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventors: Thibaud Pottier, Jeremy Toussain
  • Publication number: 20120128972
    Abstract: Composite reinforcement (R-2) that is self-adhesive by curing to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example 6,6 polyamide, covering said thread or said threads; and a second layer (22) comprising a functionalized unsaturated thermoplastic stirene elastomer, the glass transition temperature of which is negative, for example an epoxidized SBS elastomer, covering the first layer (21), said elastomer containing functional groups selected from epoxide, carboxyl and acid anhydride or ester groups. Process for manufacturing such a composite reinforcement and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcement.
    Type: Application
    Filed: May 20, 2010
    Publication date: May 24, 2012
    Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventors: Emmanuel Custodero, Sébastien Rigo, Vincent Abad
  • Publication number: 20120130055
    Abstract: The invention relates to a process for preparing a rare-earth organophosphate in the form of a fluid or not very viscous solution that can be used as is for the preparation of a “preformed” catalyst system intended, in particular, for the cis-1,4 stereospecific polymerization of conjugated dienes.
    Type: Application
    Filed: May 18, 2010
    Publication date: May 24, 2012
    Applicants: Michelin Recherche et Technique S.A., Societe De Technologie Michelin
    Inventors: Julien Thuilliez, Pierre Kiener, Elodie Guerin
  • Publication number: 20120125506
    Abstract: Composite reinforcement (R-2) that is self-adhesive by curing to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: at least one reinforcing thread (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example 6,6 polyamide, covering said thread; and a second layer (22) comprising an unsaturated thermoplastic stirene elastomer, the glass transition temperature of which is negative, for example an SBS (stirene-butadiene-stirene) copolymer, covering the first layer (21). Process for manufacturing such a composite reinforcement and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcement.
    Type: Application
    Filed: March 12, 2010
    Publication date: May 24, 2012
    Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventors: Emmanuel Custodero, Sebastien Rigo
  • Publication number: 20120123070
    Abstract: La present invention relates to a multi-component catalytic system that can be used for the cis-1,4 stereospecific polymerization of conjugated dienes. The system is based on: (i) a rare-earth complex of Formula (II) Ln(A)3(B)n, Ln being a rare-earth metal, A a ligand, B a Lewis base or a solvent molecule and n a number from 0 to 3; (ii) an alkylating agent; (iii) a compound based on an aromatic ring and having at least two heteroatoms chosen from the elements O, N, S, P, and corresponding to the Formula (III): in which the R groups each denote hydrogen, an alkyl radical optionally comprising one or more heteroatoms (N, O, P, S, Si) or one or more halogen atoms, a halogen atom, a group based on one or more heteroatoms (N, O, P, S, Si); x and y are integers from 0 to 6; D is a group having a chemical function, one of the atoms of which has a non-bonding pair; L being an atom from column 1 of the Periodic Table.
    Type: Application
    Filed: April 27, 2010
    Publication date: May 17, 2012
    Applicants: Societe De Technologie Michelin, Universite Claude Bernard Lyon 1, Centre National De La Recherche Scientifique, Michelin Recherche et Technique S.A.
    Inventors: Christophe Boisson, Olivier Rolland, Julien Thuilliez
  • Publication number: 20120114777
    Abstract: The invention relates to a tire curing mold comprising at least one lining element for molding the tread of said tire, said lining element comprising at least one bead for molding a groove in the tread. The curing mold comprises at least one insert forming a portion of the bead, said insert partially or completely delimiting a slot extending into the depth of the bead. The slot is oriented substantially perpendicularly to the bead. The slot is configured in order to mold a flexible wall of reduced thickness made as one piece with at least one wall of the groove molded by the bead.
    Type: Application
    Filed: June 21, 2010
    Publication date: May 10, 2012
    Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventors: Bernard Villeneuve, Christian Gomet
  • Publication number: 20120110972
    Abstract: Method of manufacturing a metal cord with three concentric layers (C1, C2, C3), of the type rubberized in situ, i.e.
    Type: Application
    Filed: March 29, 2010
    Publication date: May 10, 2012
    Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventors: Thibaud Pottier, Jacques Gauthier, Jérémy Toussain
  • Publication number: 20120115984
    Abstract: A process for manufacturing a self-sealing elastomer composition, said process comprising the following steps: a masterbatch, comprising at least one diene elastomer and more than 30 phr of a hydrocarbon resin, is firstly manufactured by compounding these various components in a mixer at a temperature or up to a temperature called the “hot compounding” temperature which is above the softening point of the hydrocarbon resin; and then at least one crosslinking system is incorporated into the masterbatch thus prepared, by compounding everything in the same mixer or in a different mixer, at a temperature or up to a temperature which is kept below 100° C., in order to obtain said self-sealing composition.
    Type: Application
    Filed: July 20, 2009
    Publication date: May 10, 2012
    Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventors: Frederic Pialot, Damien Fombelle, Bozena Voge, Jose Merino Lopez
  • Publication number: 20120103499
    Abstract: Tyre reinforcement (10) having a bi-material structure of reinforcing elements that consists of at least a plurality of extensible first reinforcing elements (1) and at least a plurality of inextensible second reinforcing elements (2), these first and second reinforcing elements being mutually parallel and distributed alternately in appropriate proportions in order to achieve the desired level of reinforcement, these first and second reinforcing elements lying within the same mean plane, this reinforcement being such that the extensible first reinforcing elements (1) are coupled to the inextensible second reinforcing elements (2) over a coupling length Lc which is shorter than the length L1 of the extensible first reinforcing elements (1) so that, with each of the first and second reinforcing elements having two ends, at least one of the ends of the extensible first reinforcing elements (1) is offset in relation to the two ends of the inextensible second reinforcing elements (2).
    Type: Application
    Filed: May 4, 2010
    Publication date: May 3, 2012
    Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventors: Murielle De-Tullio, Jean-Marc Viller
  • Publication number: 20120102909
    Abstract: Method of manufacturing a metal cord with three concentric layers (C1, C2, C3), of the type rubberized in situ, i.e.
    Type: Application
    Filed: March 29, 2010
    Publication date: May 3, 2012
    Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventors: Thibaud Pottier, Jacques Gauthier, Jérémy Toussain
  • Patent number: 8166809
    Abstract: Disclosed is an apparatus and methodology for monitoring tire related conditions. A substrate is provided having one or more pairs of sensors mounted thereon. The pairs of sensors are mounted in predetermined relationship to each other at predetermined separation distances such that rotational direction, speed and other parameters of a tire with which the sensors may be associated may be determined. In some embodiments, plural effective pairs of sensors are provided so that mounting orientation of the sensor need not be predetermined.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: May 1, 2012
    Assignees: Michelin Recherche et Techinque, Societe de Technologie Michelin
    Inventor: David Alan Weston
  • Publication number: 20120097310
    Abstract: A tire for a heavy vehicle with a radial carcass reinforcement anchored in two beads by wrapping around bead wires. In a radial plane, radially on the inside of the radially innermost point of the at least one layer of carcass reinforcement and axially on the outside of the geometric center of the bead wire, the radius of curvature at a point on the exterior surface of the bead is greater than the radius of curvature at the point of orthogonal projection of the point of the exterior surface of the bead onto the at least one layer of carcass reinforcement.
    Type: Application
    Filed: March 1, 2010
    Publication date: April 26, 2012
    Applicants: Michelin Recherche et Technique S.A., Societe De Technologie Michelin
    Inventor: Daniel Potier
  • Publication number: 20120097306
    Abstract: A tire with radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers, itself radially capped by a tread, the said tread being connected to two beads by two sidewalls, and the crown reinforcement comprising at least one layer of circumferential reinforcing elements. The reinforcing elements of the layer of circumferential reinforcing elements are stranded cords exhibiting, between their initial state and their state when extracted from the tire, a reduction greater than 15 GPa and preferably greater than 20 GPa in the maximum tangent modulus.
    Type: Application
    Filed: April 6, 2010
    Publication date: April 26, 2012
    Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventors: Joël Delebecq, Gilles Godeau
  • Publication number: 20120097307
    Abstract: A tire with radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers, itself radially capped by a tread, the said tread being connected to two beads by two sidewalls, and the crown reinforcement comprising at least one layer of circumferential reinforcing elements. The ratio of the thickness of the crown block at a shoulder end to the thickness of the crown block in the circumferential median plane is greater than 1.20 and the ratio of the distance between the extreme wear surface and the reinforcing elements of the layer of circumferential reinforcing elements in the circumferential median plane to the distance between the extreme wear surface and the reinforcing elements of the layer of circumferential reinforcing elements at the ends of the layer of circumferential reinforcing elements is comprised between 0.95 and 1.05.
    Type: Application
    Filed: April 6, 2010
    Publication date: April 26, 2012
    Applicants: Michelin Recherche et Technique S.A., Societe de Technologie Michelin
    Inventors: Joël Delebecq, Gilles Godeau
  • Publication number: 20120090756
    Abstract: Pneumatic tire, the belt of which is reinforced by a multilayer laminate comprising at least one multiaxially drawn thermoplastic polymer film, such as for example a biaxially drawn PET film, placed between and in contact with two layers of rubber composition, such as natural rubber. Preferably, the thermoplastic polymer film has, irrespective of the tensile direction considered, a tensile modulus E which is greater than 500 MPa, a maximum tensile stress ?max which is greater than 80 MPa, and an elongation at break Ar greater than 40%. The above thermoplastic polymer film, placed between two layers of diene rubber compositions, can especially be used in the belt of pneumatic tires as a perforation-resistant protective film.
    Type: Application
    Filed: April 6, 2010
    Publication date: April 19, 2012
    Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventor: Christophe Le Clerc
  • Publication number: 20120090755
    Abstract: A passenger vehicle tire, the crown reinforcement of which has three distinct elements, the three distinct elements comprising: a radial carcass reinforcement formed of reinforcing elements connecting the two beads of the tire, a crown belt comprising reinforcing elements parallel to the circumferential direction of the tire, and a crown triangulation layer comprising reinforcing elements making an angle of between 10 degrees and 80 degrees with the circumferential direction of the tire, the said reinforcing elements of the triangulation layer having a flattened cross section.
    Type: Application
    Filed: April 6, 2010
    Publication date: April 19, 2012
    Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELIN
    Inventor: Michel Deal
  • Patent number: D658115
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: April 24, 2012
    Assignees: Societe de Technologie Michelin, Michelin Recherche et Technique S.A.
    Inventors: Masayoshi Nomura, Yoshihisa Doui
  • Patent number: D658575
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: May 1, 2012
    Assignees: Societe de Technologie Michelin, Michelin Recherche et Technique S.A.
    Inventor: Denis Fleuriau
  • Patent number: D659077
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 8, 2012
    Assignees: Societe de Technologie Michelin, Michelin Recherche et Technique S.A.
    Inventor: Roger Delhommeau