Abstract: A radial tire (1) for motor vehicle, comprising: a crown (2) surmounted by a tread (3) provided with at least one radially outer part (3a) intended to come into contact with the road; two inextensible beads (4), two sidewalls (5) connecting the beads (4) to the tread (3), a carcass reinforcement (6) passing into the two sidewalls (5) and anchored in the beads (4); the crown (2) being reinforced by a crown reinforcement or belt (7) placed circumferentially between the carcass reinforcement (6) and the tread (3); a radially inner elastomer layer (3b, 8) known as a “underlayer”, having a formulation different from the formulation of the radially outer elastomer layer (3a), this underlayer being placed between the radially outer layer (3a) of the tread (3) and the belt (7), wherein said underlayer comprises 50 to 100 phr of a copolymer based on stirene and on butadiene, preferably an SBR having in particular a Tg above ?40° C., a reinforcing filler and between 10 and 150 phr of a platy filler.

Abstract: A tire comprising at least one carcass-type reinforcing structure formed of at least one layer of mutually parallel reinforcing elements making an angle, with the circumferential direction, of strictly less than 75° at least in the region of maximum axial width of the tire and of strictly less than 65° at least in the equatorial plane anchored on each side of the tire to a bead, each bead extending radially outwards in the form of a sidewall, the sidewalls radially towards the outside meeting a tread, and comprising, under the tread, a crown reinforcing structure consisting of at least one layer of reinforcing elements making angles of between 10° and 60° with the circumferential direction and known as a working layer, radially on the outside of the carcass-type reinforcing structure.

Abstract: Method of manufacturing a lining element intended to be attached to a support block of a tire mould, comprising the following steps: manufacturing, by selective melting of superposed layers of powder, of an intermediate element comprising the lining element and at least one local support element for locally supporting the lining element, the lining element and the local support element being produced as a single piece, separating the lining element from the support element.

Abstract: The invention relates to a tyre comprising at least one border rubber for one end of a reinforcing element or ply, having a composition based on at least one diene elastomer, a reinforcing filler and a vulcanisation system, characterized in that the composition also includes graphite, in such a way that: the reinforcing filler content is equal to (A?X) phr and the graphite content is between X/6 and 2X/3 phr; A being a number between 20 and 120; X being a number between 4 and 48; and X and A satisfying the following relationship: X<0.4A.

Abstract: A tire comprising a crown reinforcing belt formed of a plurality of reinforcing plies (13, 14) superposed on one another, each reinforcing ply comprising mutually parallel threads coated in a weakly electrically conducting rubber compound and making a given angle with the said circumferential direction, characterized in that one strand of electrically conducting thread (20) passes right through the belt at a given point, and in that a first free end (21) of the said strand runs along the radially external face of the said belt and that the second free end of the said strand (22) runs along the radially internal face of the said reinforcing belt.

Abstract: The invention concerns a lining element intended to be applied to a support block of a segment of a segmented mould for tires, the lining element being intended to form tread patterns on part of a tire tread, characterized in that it comprises an outer shell (30) delimiting an inner volume and a core (34) inside the shell.

Abstract: The invention relates to a tire having a radial carcass reinforcement, consisting of at least one layer of metal reinforcing elements, said tire comprising a crown reinforcement, which is itself covered radially with a tread, said tread being joined to two beads via two sidewalls. According to the invention, the metal reinforcing elements of at least one layer of the carcass reinforcement are non-hooped cords having, in the permeability test, a flow rate of less than 20 cm3/min and the thickness of the rubber compound between the inner surface of the cavity of the tire and that point of a metal reinforcing element of the carcass reinforcement which is closest to said inner surface of the cavity is less than 4 mm.

Abstract: Curable elastomer compositions and cured and/or curable articles made therefrom, the curable elastomer composition comprising an essentially unsaturated rubber elastomer, between 0.5 and 25 phr of a metal salt of a carboxylic acid, an effective amount of a peroxide curing agent for curing the elastomer composition and between 0.1 and 10. phr of a hysteresis-decreasing multifunctional curing coagent that decreases the hysteresis of the cured elastomer composition, wherein the hysteresis is measured using a rotorless shear rheometer as a loss tangent at 150° C., 41.85% strain and 10 Hz. The hysteresis of such a cured composition may decrease by at least 15% or alternatively, by at least 25%. The elastomer is useful in tires including, for example, the sidewall supports, the carcass reinforcement and the tread.

Abstract: A tire comprising a reinforcing structure of the carcass type and comprising under the tread strip a crown reinforcing structure consisting of at least two layers of reinforcing elements. The carcass-type reinforcing structure is produced in the form of two half-layers extending at least from the shoulders to the beads and each having an end under the tread strip, the crown reinforcing structure comprises at least one layer of circumferential reinforcing elements which are distributed in the transverse direction with a variable pitch and the pitch between the circumferential reinforcing elements is at a minimum in the region of the layer of circumferential reinforcing elements that radially face the ends of each of the half-layers of the carcass-type reinforcing structure.

Abstract: Rubber composition, especially for a tire, based on at least one diene elastomer, a reinforcing filler, a crosslinking system and an antioxidant system, wherein said antioxidant system comprises at least two antioxidants “A” and “B”: A. an N-alkyl-N?-phenyl-para-phenylenediamine corresponding to the formula (I): B. a 4,4?,4?-tris(alkylamino)triphenylamine corresponding to the formula (II): in which formulae, R1, R2, R3 and R4, which are identical or different, each represent a linear or branched alkyl group having from 1 to 12 carbon atoms or a cycloalkyl group having from 5 to 8 carbon atoms, the A/B weight ratio being between 0.1 and 5.0.

Abstract: The invention relates to a lining assembly (14) comprising a plurality of lining elements (18) intended to be attached to a support block (12) of a segment (10) of a mould for a tire, the lining elements (18) being intended to form tread blocks of part of a tread band of a tire, the assembly (14) further comprising at least one sacrificial connecting element (24) joining the lining elements (18) together.

Abstract: The invention relates to a rubber composition that is free of zinc or that contains less than 0.5 phr of zinc, which can be used for the manufacture of tyres, based on at least: one diene elastomer; one sulphur-based crosslinking system; one inorganic filler as reinforcing filler; one blocked mercaptosilane of general formula I below: (R3O)R2R1—Si—Z—S—C(?O)-A in which: R1 and R2, which are identical or different, represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; R3 represents a monovalent hydrocarbon-based group chosen from linear or branched alkyls having from 1 to 4 carbon atoms; A represents hydrogen or a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms.

Abstract: A tire comprising a crown reinforcement formed of at least two working crown layers of reinforcing elements itself radially capped by a tread strip, the tread strip being connected to two beads via two sidewalls. At least two working crown layers are formed by circumferential winding of a complex strip formed of two layers including continuous reinforcing elements passing from one layer to the other, the said reinforcing elements being parallel within a layer and crossed from one layer to the other at angles with respect to the circumferential direction that are identical in terms of absolute value.

Abstract: A borohydride metallocene complex of a lanthanide, its process of preparation, a catalytic system incorporating it, a process for the copolymerization of olefins employing this catalytic system and an ethylene/butadiene copolymer obtained by this process, the butadiene units of which comprise 1,2-cyclohexane or 1,2- and 1,4-cyclohexane links.

Abstract: A tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10° and 45° with the circumferential direction, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls and at least two working layers having different axial widths.

Abstract: A borohydride metallocene complex of a lanthanide, its process of preparation, a catalytic system incorporating a borohydride metallocene complex and a process for the copolymerization of olefins employing this catalytic system.

Abstract: Tread band for a tire comprising a plurality of elements in relief, each element in relief having a contact face and lateral faces, at least some of these elements in relief having at least one incision opening onto two of the said lateral faces, this incision being delimited by a first face and a second face, these first and second faces each comprising projections, each projection of the first face being arranged on the said face so that it can collaborate through contact with a first projection and a second projection on the second face opposite, the said first and second projections of the second face being situated one on each side of the projection of the first face in opposite directions D1 and D2, the pre-contact distance e1 separating one projection of the first face from the first projection of the second face being different from the pre-contact distance e2 separating the projection of the first face from the second projection of the second face, these distances being measured in directions paralle

Abstract: The invention relates to a tyre sidewall, having a rubber composition based on at least one diene elastomer, a reinforcing filler comprising carbon black and a vulcanization system, characterized in that the carbon black has a CTAB specific surface area greater than or equal to 90 m2/g and that the proportion of this carbon black is between 30 and 40 phr.

Abstract: A vehicle control system is described which comprises a determination of the instantaneous ground speed of a vehicle having at least two wheels, each equipped with a sensor (11) designed to supply a measurement that is a function of the movement of said wheel. It comprises a module indicating the circumferential speed (Vr) of each of these wheels from the corresponding sensor, a first vehicle speed indicator producing an overall speed estimation of the vehicle relative to the ground as a function of the indication from the module for at least one wheel, an acceleration sensor on board the vehicle (285) supplying a measurement that is a function of at least one longitudinal acceleration component of the vehicle (?mes), and a second vehicle speed indicator able to produce an estimation of the overall speed of the vehicle relative to the ground by integration of an acceleration indication derived from the acceleration sensor when the estimation resulting from the first indicator is not valid.