Abstract: A tire with a built-in self-sealing layer includes an external rubber tread, a carcass reinforcer, a gastight layer arranged towards an inside location relative to the carcass reinforcer, an anti-tack layer arranged furthest towards the inside, location and a self-sealing layer adjacent to the anti-tack layer and arranged towards the inside location relative to the gastight layer. The anti-tack layer includes particles with a shape factor (F=L/E) higher than 5. L represents a first dimension, and E represents a second dimension normal to the first dimension, with L being a longer dimension than E.

Abstract: A rubber tire comprising a surface having, over at least a portion of this surface, a pattern comprising a plurality of bars placed substantially parallel with one another, each comprising a tip distant from the surface of the tire and a base materially integral with the tire. Each bar of the plurality of bars comprises two inclined walls extending on either side of the tip towards the base, the angle of inclination of each inclined walls less than or equal in absolute value to 25° relative to a direction perpendicular to the surface. The bases of the bars are not in contact with one another so that the bases of two adjacent bars delimit a residual surface between the bars. The width of the residual surface corresponding to a distance between the bases of the two adjacent bars is less than or equal to half the height of the adjacent bars, the height being between 0.1 mm and 0.8 mm.

Abstract: The present invention relates to a tyre, the tread of which comprises a rubber composition comprising at least: from 35 to 65 phr of an emulsion styrene/butadiene copolymer “E-SBR”, referred to as first diene elastomer, the content of trans-1,4-butadienyl units of which is greater than 50% by weight of the total of the butadienyl units; from 35 to 65 phr of a polybutadiene (BR), as second diene elastomer; optionally, from 0 to 30 phr of another diene elastomer referred to as third diene elastomer; from 90 to 150 phr of a reinforcing inorganic filler; a plasticizing system comprising: according to a content A of between 10 and 60 phr, a hydrocarbon resin exhibiting a Tg of greater than 20° C.; according to a content B of between 10 and 60 phr, a plasticizer which is liquid at 20° C., the Tg of which is less than ?20° C.; it being understood that A+B is greater than 45 phr.

Abstract: The invention relates to improving the endurance of a bead of a radial tire for a heavy vehicle of construction plant type by reducing the compression to which the turn-up is subjected when the tire is driven on.

Abstract: In the method for producing a tire carcass ply for a vehicle, the ply is wound onto a drum and contains reinforcements running in planes that are radial to an axis of the drum, of which: at least one assembly member (51, 52) mounted such that it can move in relation to the drum brings the ends of the ply together and assembles them by travelling over the ply in a direction (X) parallel to the ends; and prior to assembly, a blade independent of the one or of each assembly member extends between the drum and the ends without extending between the drum and the rest of the ply.

Abstract: The invention relates to a method for assisting in the driving of a vehicle during a braking test on said vehicle on a track, said track being divided into a plurality of adjacent strips (Z1, . . . , Zn) mainly extending lengthwise in the track, the width (Iz) of each strip being greater than or equal to the width of the tires of the vehicle, each strip being worn on each braking of the vehicle on said strip. The assistance method comprises a step of selecting at least one strip out of the plurality of strips of the track, said strip being selected according to its level of wear. The assistance method also comprises a step of determining a theoretical trajectory of the vehicle, such that, by following said theoretical trajectory, the vehicle is able to brake on the selected strip.

Abstract: A method for producing a pneumatic tire in which a noise damper in the form of at least one continuous ribbon for reducing cavity resonance in a tire cavity is provided on the internal surface of a tire on the inside in the radial direction of the tire corresponding to the tire tread, including, providing a vulcanized and shaped tire; mixing a composition for forming the noise damper with a foaming agent to produce a liquid composition; rotating the tire in an upright state by means of a tire holding and rotation device, and introducing the liquid composition onto the tire internal surface by a device for introducing the liquid composition; varying the relative positional relationship of the pneumatic tire and the introduction implement in the axial direction of the tire while introducing the liquid composition is introduced onto the tire internal surface, and forming the liquid composition into a gel; and foaming and drying the gelled liquid composition.

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: The invention relates to a tire having a radial carcass reinforcement, consisting of at least one layer of reinforcing elements anchored in each of the beads by an upturn around a bead wire, said carcass reinforcement upturn being reinforced by at least one layer of reinforcing elements or stiffener, the radially outer end of which is radially on the outside of the end of the upturn. According to the invention, the reinforcing elements of at least one stiffener are non-wrapped metal cords with saturated layers, having, in what is called the permeability test, a flow rate of less than 5 cm3/min and the modulus of elasticity of the layer of polymer blend in contact with the carcass reinforcement upturn and separating the stiffener from the end of the carcass reinforcement upturn is greater than 4 MPa.

Abstract: The invention relates to a rubber composition based on at least one diene elastomer, a reinforcing filler comprising at least carbon black and an inorganic filler with an inorganic filler content of less than or equal to 50 parts by weight per hundred parts of elastomer, characterized in that the composition is obtained from a first masterbatch comprising at least one first diene elastomer and carbon black, and having a dispersion of the carbon black in the elastomeric matrix that has a Z value of greater than or equal to 90, added to which is the inorganic filler and at least one second elastomer, identical to or different from the first elastomer, and also to the process for preparing such a composition.

Abstract: Tire components including bead area components and sidewall supports for a run-flat pneumatic tire that are constructed of a material based upon a cross-linkable rubber composition. The cross-linkable rubber composition includes, per 100 parts by weight of rubber (phr)* between 10 phr—and 90 phr—of a polyisoprene rubber and between 10 phr—and 90 phr of a polybutadiene rubber. The rubber composition further includes between 60 phr and 100 phr of a thermal carbon black having a nitrogen surface area of between 5 m2/g and 15 m2/g and a DBP absorption of between 30 cm3/100 g and 55 cm3/100 g. The rubber composition is cured with a sulfur curing system.

Abstract: This invention relates generally to an apparatus for casting a portion of a tire, and, more specifically, to an apparatus that has a cap and an outer ring that are rotatably attached to a fixed portion of the molding apparatus for centrifugally molding the spokes of a non-pneumatic tire from polyurethane or some other suitable material. The cap and outer ring have separate rotatable attachments to the apparatus and are not otherwise connected to each other, so they are free to rotate without obscuring the pouring slot of the mold.

Abstract: A polyurethane that is a reaction product of reaction components, the reaction components comprising (a) a polyol; (b) a polyisocyanate selected from an aromatic, alicyclic or aliphatic polyisocyanate or combinations thereof; (c) a mixture of chain extenders that includes (i) a chain extender having a sulfur bridge in an amount of between 1 and 30 weight percent of the total mixture of claim extenders and (ii) a main chain extender, wherein the chain extender having a sulfur bridge. The chain extender having a sulfur bridge may be characterized as R1-A-Sx—B—R2 wherein R1 and R2 are selected from an OH, an NH2 or combinations thereof, A and B are selected from a divalent aliphatic, alicyclic or aromatic organic group or combinations thereof, A and B may be the same or different and x is an integer of between 2 and 10.

Abstract: Pneumatic tire comprising a composite reinforcer (R-2) that is self-adhesive by curing to a diene rubber matrix, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; covering said thread, individually each thread or collectively several threads, a layer of a thermoplastic polymer composition comprising on the one hand a thermoplastic polymer, the glass transition temperature of which is positive, on the other hand an unsaturated thermoplastic stirene elastomer, the glass transition temperature of which is negative.

Abstract: Composite reinforcer (R-2) that is self-adhesive, by curing, to a diene rubber matrix, which can be used as reinforcing element for a pneumatic 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 a polyamide, covering said thread, individually each thread or collectively several threads; a second layer (22) of a composition comprising a poly(p-phenylene ether) (“PPE”) and a functionalized diene elastomer bearing functional groups selected from epoxide, carboxyl, acid anhydride and acid ester groups, in particular an epoxidized SBR, covering the first layer (21). Process for manufacturing such a composite reinforcer and rubber article or semi-finished product, especially a pneumatic tire, incorporating such a composite reinforcer.

Abstract: A tire comprising two beads, each bead comprising an annular reinforcing structure, a carcass reinforcement, anchored in the two beads by a turn-up around the annular reinforcing structure, so as to form a main portion and a wrapped-around portion. Each bead comprises a bead filler situated at least partially between the main portion and the wrapped-around portion of the carcass reinforcement. Each bead further comprises an outer strip situated axially on the outside of the wrapped-around portion of the carcass reinforcement. The bead filler has a thickness E(r), this thickness corresponding to the length of the intersection of the direction perpendicular to the main portion of the carcass reinforcement with the bead filler, r denoting the distance separating the point of intersection of the direction perpendicular to the main portion of the carcass reinforcement with the carcass reinforcement from the radially innermost point of the annular reinforcing structure.

Abstract: A barrier layer is provided for impeding the flow of inflation gas through an inflatable article, the barrier layer constructed of a material that is based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber (phr), between 50 phr and 90 phr of a butyl rubber and between 10 phr and 50 phr of a total amount of a GCO copolymer comprising epichlorohydrin derived units and allyl glycidyl ether derived units and a GECO terpolymer comprising epichlorohydrin derived units, allyl glycidyl ether derived units and ethylene oxide derived units, wherein the GECO terpolymer is between 1 percent by weight and 50 percent by weight of the total and also including a sulfur cure system.

Abstract: The invention relates to a tyre comprising at least two working layers (41, 43) and at least one layer of circumferential metal reinforcing elements (42). According to the invention, the layer of circumferential reinforcing elements consists of at least one central part (422) and two axially external parts (421), the reinforcing elements of the central part of at least one layer of circumferential reinforcing elements being reinforcing elements cut so as to form sections (6), the length of the sections being less than 550 mm, the distance (d) between the ends of two consecutive sections being greater than 25 mm, the length of the sections being between 1.1 and 13 times the distance between the ends of two consecutive sections and the reinforcing elements of the two axially external parts (421) being continuous.

Abstract: A barrier layer for impeding the flow of inflation gas through an inflatable article, the barrier layer constructed of a material that is based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber (pbr) at least 50 phr of a primary elastomer selected from at least one of a halogenated butyl rubber or a polymeric halogenated rubber comprising C4 to C7 isooleiln derived units, para-alkylstyrene derived units and para-(haloalkylstyrene) derived units. The rubber composition may further include between 0 phr and 50 phr of a secondary diene elastomer and a platy filler. Additionally the rubber composition includes 1,3-phenylene dimaleimide and is cured with a sulfur curing system, which includes an accelerator.