Abstract: An elastomer composition includes an elastomer and a carbon black, wherein the carbon black is characterized as having a COAN of between about 90 and 150 ml/100 g, a BET of between 50 and 69 m2/g and a distribution index DI that is greater than 1.15, wherein the DI is a ratio of dw to dmode. In particular embodiments, the elastomer may be selected from one or more natural rubbers, one or more synthetic rubbers or combinations thereof. For example, the one or more synthetic rubbers may be selected from styrene butadiene rubber, butadiene rubber, polyisoprene rubber, butyl rubber or combinations thereof. Products made from the elastomer composition include tires and other products, particularly tires that include a sidewall, a carcass, a carcass reinforcement, tread and/or an undertread comprising the elastomeric composition.

Abstract: The invention relates to a rubber composition based on at least one diene elastomer, containing less than 0.5 phe of zinc, phe signifying parts per hundred parts of elastomer, and based on at least: one reinforcing filler; one sulphur-based crosslinking system, comprising a copper(II) carboxylate of formula: (RCOO)2Cu, in which R represents a hydrocarbon-based group chosen from linear or branched, cyclic or non-cyclic alkyls having from 1 to 20 carbon atoms, aryls, aralkyls or alkaryls having from 1 to 20 carbon atoms. Further subjects of the invention are a process for preparing a rubber composition according to the invention and the use of this composition for the manufacture of tires or of semi-finished products made of rubber intended for these tires.

Abstract: An airplane tire in which the carcass reinforcement comprises at least one inner layer (11, 12) wrapped around the bead core (15) from the inside to the outside to form a turn-up, and at least one outer layer (13, 14), axially outward within the sidewall (18) of any inner layer, the inner layer axially nearest the bead core being decoupled for at least part of its length, in the area adjacent to and radially outward of the bead core, from the turn-ups and carcass reinforcement layers which are axially outward of it, by at least one polymeric bead filler compound (16), whose radially outermost point C is termed the coupling point. The end of at least one turn-up is radially inward of the coupling point, and at least one turn-up, whose end is radially inward of the coupling point, is decoupled, for at least part of its length and on at least its axially outer face, from any other carcass reinforcement layer or from any other turn-up, by at least one polymeric bead filler compound.

Abstract: Tire comprising a tread having a tread surface (11) and comprising a plurality of grooves (2) of generally circumferential orientation and of depth H, these grooves (2) defining a plurality of rubber elements (3, 30), at least one of which comprises a plurality of cavities (6), each cavity (6) of volume Vc of generally elongate shape with a total length Lc and being designed to communicate with a single groove (2) of generally circumferential orientation, each cavity (6) being extended all the way along its length Lc by an incision (80) which extends radially outwardly to emerge at the tread surface (11), this tire being such that the incision (80) comprises an incision portion (81) beginning at the cavity and forming an angle A of at least 10° with a line perpendicular to the tread surface and passing through the point of intersection of the incision with the cavity (6).

Abstract: A device for evaluating the appearance of the surface of a tire (P) comprising a color linear camera (1) comprising means (14, 15, 16) for separating the light beam (F) reflected by the surface of said tire (P) and entering the camera (1) into at least two base colors (R, G, B) of given wavelength, so as to direct the light beam to as many sensors (11, 12, 13) capable of obtaining a basic image in gray level (41, 42, 43) for each of the base colors, as many lighting means (21, 22, 23) as base colors, said lighting means being oriented so as to light the surface to be evaluated at different angles, characterized in that each of the lighting means (21, 22, 23) emits a colored light (R, G, B) that differs from that of the other lighting means, and the wavelength of which corresponds substantially to the wavelength of one of the base colors selected by the camera.

Abstract: A tire comprising at least one carcass-type reinforcing structure and comprising a crown reinforcing structure having at least one working layer.

Abstract: Method of manufacturing a metal cable having two layers (Ci, Ce) of construction M+N, comprising an inner layer (Ci) having M wires of diameter d1 wound together in a helix at a pitch p1, M varying from 2 to 4, and an outer layer (Ce) of N wires of diameter d2, wound together in a helix at a pitch p2 around the inner layer (Ci), the method comprising the following steps performed in line: a step of assembling the M core wires by twisting to form the inner layer (Ci) at a point of assembling; downstream of the point of assembling of the M core wires, a step of sheathing the inner layer (Ci) with a diene rubber composition called “filling rubber”, in the raw state; a step of assembling the N wires of the outer layer (Ce) by twisting around the inner layer (Ci) thus sheathed; and a step of twist balancing. Also disclosed is a device for implementing such a method.

Abstract: A method for evaluating the surfaces of a tire, said surfaces being molded with rigid elements, wherein a collection of N images of a given zone of the tire is constituted based on the images originating from one or more tires, each of the images of the collection being constituted by the values of physical magnitudes measured by a sensor sensitive to the reflection of the light at each of the points with coordinates i, j of said surface, and then the images of said collection are made to correspond by superposition, and the image of the zone of a tire from said collection to be evaluated is compared with a reference image. The value of the physical magnitudes of the reference image is calculated based on the value of each of these physical magnitudes measured on the N images of said collection.

Abstract: A vehicle of motorcycle type comprising at least two axle systems each equipped with a mounted assembly consisting of a wheel and a tire. Each of the tires comprises, in each sidewall, at least one additional layer of reinforcing elements forming with the circumferential direction an angle of between 20° and 60°, the orientation of the reinforcing elements of the additional layer in a sidewall being symmetrical to the orientation of the reinforcing elements of the additional layer in the other sidewall in relation to the equatorial plane, the angle formed by the plane comprising a reinforcing element of an additional layer with a radial plane comprising the radially inner end of said reinforcing element being oriented in the direction of rotation of the mounted assembly corresponding to the forward movement of the vehicle in the rear tire and in the opposite direction in the front tire.

Abstract: A tire comprising a carcass reinforcement radially surmounted by a crown reinforcement comprising at least one layer of reinforcements, the tire furthermore comprising a bielastic reinforcing element extending circumferentially and comprising a bielastic fabric, the bielastic reinforcing element being, at least in part, radially adjacent to a portion of at least one reinforcing layer of the crown reinforcement, in the immediate proximity of an axial end of this reinforcing layer of the crown reinforcement.

Abstract: A tread 1 having a tread surface 3 onto which there opens at least one cavity 2, this cavity being bounded by a cavity wall 20 comprising a bottom wall 21 extended by a side wall 22 intersecting the tread surface to form at least one edge corner 31, this tread being, over at least part of the wall of the cavity 2, provided with a plurality of supporting strands 4, each supporting strand 4 comprising two ends of which one end 41 is attached to the cavity wall 20, this tread being characterized in that the supporting strands 4 each comprise at least one branching formed by the attachment of at least one branching strand 5.

Abstract: Method of manufacturing a tire (1) by winding contiguous strips onto a rotary form at a pitch and in a number of turns that is suited to the desired profile. The method comprises steps that include laying a strip to form the sublayer (13) onto the plies (15) that form the crown reinforcement belt, the strip being made of a rubbery material that is a poor conductor of electricity, laying one or more strips to form the first part of the tread (11A), these being positioned axially on one side of the tire, the strip or strips being made of rubbery materials that are poor conductors of electricity, and laying a strip to form the insert (10) and that is laid in such a way that at least one radially interior turn (100) is in contact with the sublayer (10), the strip being made of a rubbery material that is a conductor of electricity.

Abstract: A tire comprising an envelope made at least partly of rubber, defining an internal annular volume and having a crown (1), which defines a tread, two sidewalls (2) joined to the crown (1), and a supporting structure (4). The supporting structure (4) is pressurized and divides the annular volume of the tire into a plurality of compartments (400) or cells, and the sidewalls (2) are connected to or integral with the supporting structure (4).

Abstract: A system for producing an estimation of the overall speed of a vehicle relative to the ground is described which comprises the generation of a measurement of the instantaneous road grip coefficient (?r) of at least one wheel (1) of a vehicle with electric traction wherein a rotary electric machine (2) is coupled to said wheel to drive it individually in traction and in braking. This system comprises an indicator of the torque applied at each instant to that wheel based on the measurement of the current (Ic) in the electric machine, an indicator of the instantaneous dynamic load on said wheel and a stage for calculating the instantaneous road grip coefficient of said wheel (1) relative to the ground based on the torque indicator and the dynamic load indicator in order to determine the ratio of the tangential force applied to the ground by the wheel under the action of said torque to the normal force applied to the ground by the wheel under the action of the dynamic load.

Abstract: An apparatus and method of roughening the sole side surface of a tread band is provided wherein the sole side surface of a tread band is roughened with at least one abrasive roller. The bottom of at least one groove in a tread side of the tread band is supported while the abrasive roller is roughening the sole side surface opposite the supported groove.

Abstract: A rubber composition, in particular intended for the manufacture of tires, based on at least a predominant elastomer, chosen from the group consisting of butyl rubbers, essentially unsaturated diene elastomers, essentially saturated diene elastomers and the mixtures of these elastomers, and a reinforcing filler, characterized in that the composition also comprises graphite and a functionalized or nonfunctionalized polyisobutylene oil, having a molecular weight of between 200 g/mol and 40 000 g/mol, present in a proportion of between 2 and 50 phe.