Patents Assigned to Michelin & Cie
  • Patent number: 7425313
    Abstract: A reinforcing aluminum-based filler which can be used for reinforcing diene rubber compositions intended for the manufacture of tires, comprising an aluminum (oxide-)hydroxide corresponding, with the exception of any impurities and the water of hydration, to the general formula (a and b being real numbers): Al(OH)aOb, with 0<a?3 and b=(3?a)/2, ??(I) the specific BET surface area of which is between 30 and 400 m2/g, the average particle size (by mass) dw of which is between 20 and 400 nm and the disagglomeration rate, ?, of which, measured via an ultrasound disagglomeration test at 100% power of a 600-watt ultrasonic probe, is greater than 5×10?3 ?m?1/s is provided. A rubber composition suitable for the manufacture of tires comprising said aluminum-based filler as reinforcing filler.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: September 16, 2008
    Assignee: Compagnie Generale des Establissements Michelin - Michelin & Cie
    Inventors: Emmanuel Custodero, Laure Simonot, Jean-Claude Tardivat
  • Patent number: 7234496
    Abstract: A safety insert designed to be mounted in an assembly comprising a tire and a rim of a vehicle and device for detecting the bearing of the tire on an insert, so that the insert generates signals oriented parallel to the axis of rotation of the tire and rim assembly and so that the device detects and analyzes the vibrating signals of the chassis of the vehicle.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: June 26, 2007
    Assignee: Compagnie Générale des Etablissements Michelin-Michelin & Cie
    Inventors: Arnaud Dufournier, Francois Hottebart
  • Patent number: 6975396
    Abstract: A reinforcing aluminum-based filler which can be used for reinforcing diene rubber compositions intended for the manufacture of tires, comprising an aluminum (oxide)hydroxide corresponding, with the exception of any impurities and the water of hydration, to the general formula (a and b being real numbers): Al(OH)aOb, with 0<a?3 and b=(3?a)/2,??(I) the specific BET surface area of which is between 30 and 400 m2/g, the average particle size (by mass) dw of which is between 20 and 400 nm and the disagglomeration rate, ?, of which, measured via an ultrasound disagglomeration test at 100% power of a 600-watt ultrasonic probe, is greater than 5×10?3 ?m?1/s is provided. A rubber composition suitable for the manufacture of tires comprising said aluminum-based filler as reinforcing filler.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: December 13, 2005
    Assignee: Compagnie Generale des Establissements Michelin-Michelin & Cie
    Inventors: Emmanuel Custodero, Laure Simonot, Jean-Claude Tardivat
  • Patent number: 6951233
    Abstract: A tire having a tread composed of two non-conductive layers, each layer containing a circumferential insert of conductive mix, the inserts having a wider interface at the interface of the two layers. An apparatus for extruding a layer, provided with a conductive insert, including a main extruder for extruding a non-vulcanized, non-conductive layer, and a micro-extruder having an extrusion head, provided at its end with a nozzle, for extruding a conductive insert in the layer.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: October 4, 2005
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & CIE
    Inventors: Didier Calvar, Serge Nicolas, Daniel Bardy
  • Patent number: 6854720
    Abstract: The invention concerns a shock strut for a MacPherson wheel suspension comprising a shock absorber with a body (21) and a rod (22). A coil spring (24) is mounted on a lower spring retainer (23) integral with the shock absorber body (21). The first turn of the spring (24) of the MacPherson strut can be immobilized on and relative to the lower spring retainer (23) in various predetermined positions on the lower spring retainer (23).
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: February 15, 2005
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventors: Francis Aubarede, Antoine Ducloux
  • Patent number: 6834693
    Abstract: A tire having a tread consisting of two circumferential layers of non-conductive material, each layer containing a circumferential insert made of a conductive mix and having on the contact surface between the two layers a circumferential footprint, the first of these layers having on the said surface a circumferential footprint with a circular path of width e, the second layer having on the said surface a circumferential footprint of width e′ lying across and having crests on either side of the circular path of the first layer, such that circumferentially between the two paths there are numerous points of contact which ensure electrical connection between the two conductive elements. The second layer with its insert is extruded from a main extruder for the extrusion of the portion of a tread in the unvulcanized condition, and a micro-extruder whose extrusion nozzle is fitted with a cutting edge and whose extrusion orifice is directed against a conveyor associated with the main extruder.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: December 28, 2004
    Assignee: Compagnie Generle des Etablissements Michelin-Michelin & Cie
    Inventors: Didier Calvar, Serge Nicolas, Daniel Bardy
  • Patent number: 6834699
    Abstract: A tire, designed to carry heavy loads, having a radial carcass reinforcement formed of at least one ply of inelastic reinforcing elements and anchored in each bead to a bead wire so as to form a turn-up whose end is a radial distance HRNC away from the base of the bead, each bead being reinforced by at least two additional reinforcement armatures, at least one first armature being formed of radial reinforcement elements and at least one second armature being formed of elements that make with the circumferential direction an angle &agr; such that 0°≦&agr;≦45°, the first reinforcement armature being formed of radial elements and being wrapped around the bead wire outside the carcass reinforcement while the second armature is not wrapped around the said bead wire.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: December 28, 2004
    Assignees: Compagnie Generale des Etablissements, Michelin-Michelin & CIE
    Inventor: Patrick Corsi
  • Patent number: 6814117
    Abstract: A tire having a carcass reinforcement, a crown reinforcement and a tread joined to two beads by means of two sidewalls, the axially outer edges of the single mix of the tread being folded over on to the radially outer edges of the rubber mixes of the sidewalls, and the circular junction J between the sole rubber mix of the tread and the rubber mix of the sidewall being positioned such that its radius RC on the axially outer wall of the tire lies firstly between 0.9 RS+0.1 RB and 0.8 RS+0.2 RB and secondly between RSS and 0.9 RSS+0.1 RB, RS being the equatorial crown radius of the tread, RSS the equatorial radius of the center line of the carcass reinforcement and RB the radius of the bead seat.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: November 9, 2004
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventor: Noël Morel
  • Patent number: 6770367
    Abstract: The invention provides a process for preparing a modified carbon black with an adhering layer of aluminum oxide and/or hydroxide. This process involves (a) impregnating a starting carbon black with a colloidal suspension formed by hydrolysis of a solution of aluminum alkoxide in an alcoholic solvent, (b) removing the alcoholic solvent by evaporation, and (c) heat-treating the black thus impregnated so as to transform the aluminuous layer present at its surface into an adhering layer of aluminum oxide and/or hydroxide. The modified carbon black prepared by the process is also provided.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: August 3, 2004
    Assignee: Compagnie Générale des Etablissements Michelin - Michelin & Cie
    Inventors: Emmanuel Custodero, Laure Simonot, Jean-Claude Tardivat
  • Patent number: 6770160
    Abstract: The invention concerns a method of manufacture of tires and a tire assembly drum having a body with a receiving surface for the products to be assembled, the body being mounted on a center shaft, and at least one lifting device situated at one of the ends of the receiving surface, the lifting device including a plurality of lifting fingers distributed circularly around the center shaft, the fingers extending appreciably radially and presenting a bearing surface for the products to be assembled, the fingers being controlled to be deployed essentially radially toward the outside of the drum.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: August 3, 2004
    Assignees: Compagnie Generale des Etablissements, Michelin-Michelin & Cie
    Inventors: Dominique Cordaillat, Olivier Muhlhoff, Bruno Panighel
  • Publication number: 20040036204
    Abstract: The invention concerns a shock strut for a Mac Pherson wheel suspension comprising a shock absorber with a body (21) and a rod (22). A coil spring (24) is mounted on a lower spring retainer (23) integral with the shock absorber body (21). The first turn of the spring (24) of the MacPherson strut can be immobilized on and relative to the lower spring retainer (23) in various predetermined positions on the lower spring retainer (23).
    Type: Application
    Filed: August 28, 2003
    Publication date: February 26, 2004
    Applicant: Compagnie Generale des Etablissements Michelin - Michelin & Cie
    Inventors: Francis Aubarede, Antoine Ducloux
  • Patent number: 6688619
    Abstract: A vehicle axle crosspiece includes inner and outer tubes extending crosswise of the vehicle, with the axially outer end of the outer tube being connected to a wheel arm on one side of the vehicle and the axially outer end of the inner tube being connected to a wheel arm on the other side of the vehicle. The inner and outer tubes are joined together by at least two axially-spaced antiroll articulations of elastomeric material housed between the inner and outer tubes. Each of the two antiroll articulations has its own radial stiffness and is assigned a coefficient proportional to its radial stiffness. The center of inertia of the antiroll articulations is closer to the wheel arm connected to the outer tube than to the wheel arm connected to the inner tube.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: February 10, 2004
    Assignee: Compagnie Générale des Etablissements Michelin-Michelin & Cie
    Inventors: Vincent Biard, Michel Blondelet
  • Patent number: 6675851
    Abstract: The present invention relates to a rubber-based product, having at least one buffer zone to trap oxygen external to said product in order to protect at least one sensitive zone of said product from oxidation, said buffer zone comprising a composition containing at least one elastomer and at least one iron (III) salt selected from iron (III) acetylacetonate and an iron (III) salt of a carboxylic acid having the formula Fe(CnH2nO2)3 in which n is between 13 and 23. This product is produced by incorporating, by mechanical working, said iron (III) salt into the composition in order to obtain said buffer zone. The buffer zone composition is advantageously used in a tire and imparts improved rolling resistance.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: January 13, 2004
    Assignee: Michelin & Cie
    Inventors: Francois Masson, Francis Renault
  • Patent number: 6667110
    Abstract: A hybrid steel cord and method of making such cord which includes, in contact with one or more carbon steel wire(s), at least one stainless steel wire whose microstructure contains less than 20% of martensite (% by volume). Articles made of plastic and/or rubber, in particular tire envelopes or the carcass reinforcement plies of such envelopes embodying such cords.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: December 23, 2003
    Assignee: Compagnie Générale des Establissements Michelin - Michelin & Cie
    Inventors: François-Jacques Cordonnier, Eric Depraetere
  • Patent number: 6659147
    Abstract: A tire with radial carcass reinforcement, having a crown reinforcement which includes at least two working crown plies made of inextensible cables, crossed from one ply to the other, and an additional ply, axially continuous and formed of undulating metallic elements orientated essentially parallel to the circumferential direction and positioned between the working plies.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: December 9, 2003
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventor: François-Jacques Cordonnier
  • Publication number: 20030202923
    Abstract: A reinforcing aluminum-based filler which can be used for reinforcing diene rubber compositions intended for the manufacture of tires, comprising an aluminum (oxide-)hydroxide corresponding, with the exception of any impurities and the water of hydration, to the general formula (a and b being real numbers):
    Type: Application
    Filed: April 30, 2003
    Publication date: October 30, 2003
    Applicant: Compagnie Generale des Etablissements, Michelin - Michelin & Cie.
    Inventors: Emmanuel Custodero, Laure Simonot, Jean-Claude Tardivat
  • Patent number: 6626221
    Abstract: A tire wherein the reinforcing cords of the carcass, in the part situated between the anchoring zone of the carcass and the sidewall, are in contact with at least one layer of cushion compound having a high modulus of elasticity on the axially outer side and a low modulus of elasticity on the axially inner side and in the sidewall.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: September 30, 2003
    Assignee: Compagnie Générale des Establissements Michelin-Michelin & CIE
    Inventors: Pedro Costa Pereira, Jacques Barraud, Jean-Yves Denoueix, Bernard Guerinon, Yves Herbelleau
  • Patent number: 6626220
    Abstract: The invention relates to a novel tire having beads of a specified structure. In particular, the tire, when viewed in meridian section, has a radial carcass reinforcement and a bead of specified structure. The bead features a reinforcement ring that is able to move axially. The tire also features structures that are responsive to axial movement of the reinforcement ring, which modify clamping of the bead on its rim causing the clamping to increase with increasing tension of the carcass reinforcement.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: September 30, 2003
    Assignee: Compagnie Générale des Etablissements Michelin - Michelin & Cie
    Inventors: Jean-Jacques Drieux, Olivier Muhlhoff
  • Patent number: 6622765
    Abstract: A tire, designed to carry heavy loads, having a radial carcass reinforcement formed of at least one ply of inelastic reinforcing elements and anchored in each bead to a bead wire so as to form a turn-up whose end is a radial distance HRNC away from the base of the bead, each bead being reinforced by at least two additional reinforcement armatures, at least one first armature being formed of radial reinforcement elements and at least one second armature being formed of elements that make with the circumferential direction an angle &agr; such that 0°≦&agr;≦45°, the first reinforcement armature being formed of radial elements and being wrapped around the bead wire outside the carcass reinforcement while the second armature is not wrapped around the said bead wire.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: September 23, 2003
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventor: Patrick Corsi
  • Patent number: 6612553
    Abstract: The invention concerns a shock strut for a McPherson wheel suspension comprising a shock absorber with a body (21) and a rod (22). A coil spring (24) is mounted on a lower spring retainer (23) integral with the shock absorber body (21). The shock strut comprises means capable of blocking the first turn of the spring (24) on and relative to the lower spring retainer (23) in various predetermined positions on the lower spring retainer (23).
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: September 2, 2003
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventors: Francis Aubarede, Antoine Ducloux