Abstract: The invention includes methods for forming a retreaded tire and treads there for. Particular embodiments of such methods include providing a tire carcass configured to receive a tire tread along an annular tread-receiving area and a pre-formed tread comprising a tread body and a submerged void arranged along a bottom side of the tread and extending into the tread thickness to a top end located below the top side of the tread, the submerged void having a length and an opening arranged along the bottom side when the tread is in an uninstalled configuration, where the opening of the submerged void extends in a direction of the submerged groove length along an alternating, non-linear path. Further steps include assembling a retreaded tire by arranging the tire tread atop a bonding layer arranged between the tire tread and the tire carcass and comprising uncured bonding material.

Abstract: A heavy truck tire tread (12) is provided that has a partially hidden longitudinal groove (22) with an undersurface channel (24) engaged by a longitudinal sipe (26). The partially hidden longitudinal groove (22) has a surface opening (28) that extends from a surface of the tread to the undersurface channel (24). The tread (12) has at least one of two features. The first feature is that the surface opening (28) extends from the surface to the undersurface channel (24) at an angle to the thickness direction such that the surface opening (28) at the surface is forward of the surface opening (28) at the undersurface channel (24) in the rolling direction (20). The second feature is that a lateral sipe (32) engages the surface opening (28) so that the first end is at the surface opening (28), and the second end is forward of the first end in the rolling direction (20).

Abstract: A method for cleaning a vulcanization mold for tires in a curing press uses device having a collaborative mobile robot and incorporating a computer program. The robot includes an autonomous mobile platform mounted on drive wheels and having batteries supplying electricity, a dry ice dispenser, sensors for identifying the location of the mold to be cleaned, and motors ensuring its displacement between a storage location of the device and the mold to be cleaned and the displacement of an articulated mobile arm of the robot. The robot bears a nozzle for spraying dry ice from the dispenser. The device comprises means for communication with a control unit. The control unit sends a mission instruction to the device, which navigates between a storage location and the location of the mold and automatically cleans the vulcanization mold.

Abstract: The tooling is suitable for manufacturing a toroidal tire that has a crown, a first annular bead and a second annular bead, together with a first sidewall and a second sidewall. The, tool has a core which is provided with groove-type passages that are suitable for receiving reinforcing elements, referred to as “stays.” The stays are designed to be permanently incorporated into the structure of the tire and to each extend in the cavity of the tire, thereby connecting a crown anchor point situated in the crown of the tire to a lateral anchor point situated in one of the sidewalls or beads of the tire.

Abstract: An elastomeric mixture comprises at least: one diene elastomer/polylactide copolymer A1 comprising a polylactide block PLLA or PDLA, where appropriate one or more other polylactide blocks which are all PLLA when the first block is PLLA or which are all PDLA when the first block is PDLA, the mass percentage of the polylactide block(s) being between 10% and 50% by weight relative to the weight of the copolymer A1, and a diene elastomer/polylactide copolymer B1 the mass percentage of the polylactide block(s) in said copolymer B1 being between 10% and 50% by weight relative to the weight of the copolymer B1, or a polylactide B2, or a mixture of said copolymer B1 and of said polylactide B2, the names PLLA and PDLA denoting a chain consisting of units of formula (I) —[CH(CH3)—C(O)—O]— (I), of which at least 70% by weight are, respectively, of L and D configuration.

Abstract: A tire fitted with a transponder comprises: a crown comprising a crown reinforcement having an axial end at each of its edges, connected at each of its axial ends by a sidewall to a bead having an interior end; a carcass reinforcement layer formed of parallel reinforcers, which is anchored in each bead around a bead wire to form a main part and a turn-up; and the transponder comprising a dipole antenna consisting of a spring defined by a pitch P and a diameter D. A ratio between the pitch (P1) and the diameter (D1) for a loop of a first region of the spring is greater than 0.8, and the transponder is situated axially on the outside of an interior end of the bead and radially between the upper end of the bead wire and the axial end of the crown reinforcement.

Abstract: The folding-up system is intended to fold an end portion of a cylindrical wall of a tire carcass assembly around a reinforcing bead core. The system comprises a drive device that is arranged to cause the carcass assembly to revolve intermittently about its roll axis, by successive angular increments, together with a folding device to cause pressure rollers to tilt. After each angular increment in roll, about a pitch axis perpendicular to the roll axis, in order to fold each portion of the end section located in an angular working sector occupied by a pressure roller towards the radially inner face of the wall, around the reinforcing bead core. Finally, the drive device includes a selector for placing the pressure rollers in a withdrawn position to disengage the trajectory followed by the wall of the carcass assembly during its roll rotation.

Abstract: A preformer (1) is designed to extrude jointly a plurality of elastomer mixes in a direction of flow (X1), in order to form a profiled element, the preformer comprising for this purpose, superimposed in a direction of stacking (Z1), transverse to the direction of flow (X1), a first channel (11), a second channel (12) which is separated from the first channel (11) by a first partition (15), then a third channel (13), separated from the second channel (12) by a second partition (16), the preformer also comprising a stiffener (20) formed integrally with the first partition (15) and the second partition (16), and extends through the second channel (12), having a leading edge (21) which splits the flow of elastomer material following the second channel (12).

Abstract: Embodiments of the disclosure include a mud flap for a vehicle having a mounting section and a barrier section. The barrier section is configured to deflect matter discharged from a tire during vehicle operation. The width of the mounting section is greater than the width of the barrier section. The mounting section optionally includes a first set of mounting features, each of the mounting features forming a recess or aperture. One mounting feature of the first set of mounting features is arranged at and/or beyond a widthwise extent of the barrier section width. The one mounting feature is also arranged at least partially within a portion of the mounting section width extending outwardly from a widthwise extent of the barrier section width. Further embodiments include mounting a single wide mud flap on a vehicle configured to receive a dual wide mud flap.

Abstract: A heavy truck tire directional tread is provided that has two successive asymmetrical sipes (14) in the longitudinal direction that share at least some of the same offset from a tread edge in the lateral direction. Each of the two asymmetrical sipes (14) has a body (28) and a tear drop (30). The surface of the bottom of the sipe (14) has a radius of curvature that is not the same along the entire surface of the bottom. The geometry of the sipes resists crack initiation and propagation and is governed by the equation RA.B-avg>1-4×Rref, wherein Ra.B-avg is the average radius of a particular portion of the bottom of the sipe, and Rref is a reference radius of the bottom of the sipe.

Abstract: A 1,3-dipolar compound including an epoxide group is provided. The epoxide group is a 3-membered ether ring in which a first member is a carbon atom having an attachment to the dipole of the 1,3-dipolar compound and a second member is a tertiary or quaternary carbon. The use of the 1,3-dipolar compound in the modification of a diene polymer makes it possible to improve the rupture properties of a rubber composition comprising the modified polymer, without the expense of its hysteresis properties, while at the same time improving its implementation.

Abstract: A method for encapsulating electronic devices comprises, successively, placing a profiled strip on a conveyor belt, the profiled strip comprising a base, at least one flap protruding with respect to said base; positioning an electronic device, in the longitudinal direction, on the receiving zone of the profiled strip; and plastically deforming the flap by application of an application force in a predetermined direction.

Abstract: Tread (1) for a tire of a heavy-duty vehicle, having a tread surface (10), this tread (1) comprising, near to each of its edges (11), a plurality of open wells (2) on the tread surface when new, these open wells (2) of depth Pmax being arranged circumferentially with a mean distance D between two consecutive open wells; each open well (2) being delimited by two main faces (21, 22) facing one another, this tread being such that each open well (2) is connected to at least one hidden cavity (32) formed within the tread, this hidden cavity (32) opening into a main face (21, 22) of said well.

Abstract: The device is a drum brake and allows for the shaping of a tire by axial convergence and relative rotation of a first flange carrying the first bead of the tire and a second flange carrying the second bead of the tire. The device applies a law comprising a conditional assistance mode in which assistance with rotation of the flanges is triggered if and only if the angular difference found between the flanges leaves a pre-established permitted region.