Patents Assigned to Compagnie Générale des Etablissements Michelin - Michelin & Cie
  • 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: 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: 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
  • 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: 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: 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
  • Patent number: 6610261
    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, &agr;, of which, measured via an ultrasound disagglomeration test at 100% power of a 600-watt ultrasonic probe, is greater than 5×10−3 &mgr;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: May 30, 2000
    Date of Patent: August 26, 2003
    Assignee: Compagnie Générale des Etablissements Michelin - Michelin & Cie
    Inventors: Emmanuel Custodero, Laure Simonot, Jean-Claude Tardivat
  • Patent number: 6554038
    Abstract: A tire having a radial carcass reinforcement of low H/S ratio, at least one bead provided with an axially outer protuberance, the maximum axial width of which is greater than the space taken up by the rim, characterized in that the protuberance is provided with incisions of a width other than zero, of a depth of at most 5 mm and arranged circumferentially parallel to each other.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: April 29, 2003
    Assignee: Compagnie Générale des Etablissements Michelin - Michelin & Cie
    Inventors: Pierre Chandezon, Jean-Jacques Drieux, Olivier Muhlhoff
  • Patent number: 6523591
    Abstract: A tire to be mounted on a rim of axial width L, with flanges with rounded rim hooks, having a tread joined to two beads (3) by two sidewalls (2) and at least one carcass reinforcement (1) formed of at least one ply of reinforcement elements, characterized in that each bead (3) is without a bead wire, the carcass reinforcement (1) having in each bead (3) a meridian profile which is curved axially and radially from the outside to the inside to form an axially inner edge located in an angle a open axially and radially towards the inside, one of the edges of which is parallel to the axis of rotation, the carcass reinforcement (1) being reinforced in each bead (3) at least radially to the outside and axially to the inside by at least one first continuous additional layer (6), of meridian profile substantially parallel to the meridian profile of the carcass reinforcement (1) in the bead (3) and including at least one first section composed of at least one ply (61, 62, 63) of inextensible reinforcement elements form
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: February 25, 2003
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventors: Jean Billieres, Pierre Durif
  • Patent number: 6499522
    Abstract: A tire having a radial carcass reinforcement, a crown reinforcement including at least two working crown plies of inextensible reinforcement elements, crossed from one ply to the other ply, forming angles of between 10° and 45° with the circumferential direction, and an additional, axially continuous, ply formed of continuous, inextensible and substantially radial metallic reinforcement elements made of steel, the additional ply being placed radially between the working plies, and having an axial width which is at least 1.1 times the axial width of the widest working crown ply.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: December 31, 2002
    Assignee: Compagnie Générale des Etablissements Michelin-Michelin & Cie
    Inventor: Guy Cluzel
  • Patent number: 6465544
    Abstract: Rubber composition intended for the manufacture of tire casings which have improved hysteretic properties and scorch safety, based on at least one elastomer and silica by way of reinforcing filler enclosing a reinforcing additive consisting of the mixture and/or the product of in situ reaction of at least one functionalized polyorganosiloxane compound containing, per molecule, at least one functional siloxy unit capable of bonding chemically and/or physically to the surface hydroxyl sites of the silica particles and at least one functionalized organosilane compound containing, per molecule, at least one functional group capable of bonding chemically and/or physically to the polyorganosiloxane and/or the hydroxyl sites of the silica particles and at least one other functional group capable of bonding chemically and/or physically to the polymer chains.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: October 15, 2002
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventors: Yves Bomal, Olivier Durel
  • Patent number: 6463975
    Abstract: A tire, at least one radial carcass reinforcement of which is anchored within each bead B to two bead wires and to form an upturn, characterized in that, viewed in meridian section, an additional reinforcement armature, formed of at least one ply of circumferential reinforcement elements, is placed, at least axially to the inside, along the carcass reinforcement in the region of the bead B.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: October 15, 2002
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventor: Pascal Auxerre
  • Patent number: 6460590
    Abstract: A tire having a radial carcass reinforcement covered radially on the outside by a crown reinforcement consisting of two working plies of reinforcement elements crossed over and making angles of between 10° and 45° with respect to the circumferential direction, the carcass reinforcement in its portion underneath the crown reinforcement being formed of cut reinforcement elements.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: October 8, 2002
    Assignee: Compagnie Generale des Etablissements Michelin-Michelin & Cie
    Inventor: Noël Morel
  • Patent number: 6460589
    Abstract: A tire, at least one radial carcass reinforcement of which is anchored within each bean B to a bead wire to form an upturn, characterized in that, viewed in meridian section, the carcass reinforcement has a meridian profile, in the region of the point of inflection J between the convex part and the concave part, which is reinforced axially to the inside by an additional reinforcement armature composed of at least one ply formed of circumferential metal elements.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: October 8, 2002
    Assignee: Compagnie Generale Des Etablissements Michelin-Michelin & Cie
    Inventor: Pascal Auxerre