Abstract: Provided is a bisplit mold for tire forming capable of avoiding the pinching of the unvulcanized tire at the mold clamping. Also provided is a process for manufacturing a tire by use of the bisplit mold. The bisplit mold includes: a plurality of segments provided to each of the paired containers, and formed by being divided in the tire circumferential direction and; opening-closing means provided to the respective containers, cause the superior and the inferior segments to come close to and separate away from each other, the segments being attached to the pair of containers with vertically bisplit center plates placed between the pair of containers; a superior side plate and an inferior side plate provided respectively to the pair of containers; and vertically bisplit mold pieces provided to the inner sides of the segments.

Abstract: A transfer ring especially suitable for use in the manufacture of vehicle tires including a skeletal cylindrical cage which houses an oscillatable circular drive member therewithin. The drive member includes a plurality of cam followers disposed about the outer perimeter thereof and which operatively engage respective camming grooves defined in each of a plurality of hinged driven links which are individually hingedly mounted internally of the cage about the outer perimeter of the cage. Each driven link includes an inboard end hinged within the cage and an outboard end having an articulating shoe mounted thereon. The shoes on the several driven links are interconnected to provide like simultaneous substantially equal articulative and rotational movement of the shoes radially inwardly or radially outwardly of the cage upon rotational movement of the drive member and resultant rotational movement of the hinged driven links effected through the cam followers and camming grooves of the driven links.

Abstract: Fastened to a tyre is a detecting device consisting of a detecting unit including a sensor associated with an annular antenna having an inner perimetral edge, and an anchoring body having a base portion with a fastening surface secured to the radially internal surface of the tyre. The detecting unit is removably brought into engagement with the anchoring body by insertion of the inner perimetral edge of the antenna into a perimetral groove formed between the base portion and a retaining portion. The anchoring body has an overall height of about 0.2 to about 1.5 times a maximum distance measure between two mutually spaced apart points along the inner perimetral edge.

Abstract: An adaptive tire employable by a vehicle traveling upon a surface, so as to define a rolling resistance, and including at least one active material element operable to selectively modify the resistance when activated.

Abstract: A manufacturing method of a rubber member for a tire includes a winding step in which a rubber strip is spirally winding and overlapping around a surface of a to-be wound body, thereby forming a tire rubber member around which the rubber strip is overlapped. A plurality of air-vent grooves are formed on at least one of surfaces of the rubber strip. Each air-vent groove extends at an angle ? of 20 to 90° with respect to the longitudinal direction of the rubber strip, the maximum groove width of the air-vent groove is 0.3 to 3.0 mm, and the maximum groove depth thereof is 0.1 to 3.0 mm.

Abstract: A method for fitting tires (P) to a driving axle of a vehicle carrying heavy loads, which consists, after having determined the type of journey made by said vehicle, in: when the route is of type A (ascending under load with a driving torque and descending empty with a braking torque), fitting to each driving axle tires such that for each transverse groove (31) in the edge portions (B) of the tread (1), the angle of inclination of the rubber faces (310, 311) delimiting the transverse grooves (31) which first come into ground contact is smaller than the angle of inclination of the rubber face opposite delimiting the same transverse groove, or when the route is of type V (ascending empty and descending under load with a braking torque), fitting to each driving axle tires such that for each transverse groove (31) in the edge portions (B) of the tread, the angle of inclination of the rubber face (310, 311) delimiting said transverse groove which first comes into ground contact is larger than the angle of incli

Abstract: A chamber (1) that works as a peristaltic pump for the pressure correction in the tire (4), which is a part of the tire (4) or of an ancillary structure (6) placed between the rim (7) and the tire bead (4) and is connected with the tire (4) internal space at one end and with the external environment at the other end. The chamber (1) is in the shape of a curved hollow channel, where at least one enclosing wall is at least partially formed by at least a pair of surfaces (10) coplanar with the longitudinal direction of the chamber (1). When the tire is mounted on the rim, the pair of surfaces (10) are pressed together thus hermetically closing the chamber (1). When the chamber (1) is closed during rotation of the wheel, the surfaces (10) can slightly slide on one another taking internal wall tensions onto themselves thus decreasing the possibility of wall damage through ripping. A method of producing the chamber (1) is also disclosed.

Abstract: A vehicle tire includes a tread provided with a tread pattern, which is made up of circumferentially arranged design units having a plurality of pitch lengths Pi (i=l to j) including a minimum pitch length Pl and a maximum pitch length Pj. Each of the design units has at least one groove with side walls each having an inclination angle ?i in a cross section parallel to the tire equator, and the inclination angle ?1 in the design unit having the minimum pitch length P1 is less than the inclination angle ?j in the design unit having the maximum pitch length Pj, whereby the rigidity difference between the design units having different pitch lengths is decreased. Preferably, the angle ?i in a design unit having a pitch length Pi is not more than the angle ?i+1 in a design unit having the next longer pitch length Pi+1.

Abstract: A method of manufacturing a tire having first color characters or lines on at least one side wall part, includes the steps of stamping a second color side wall rubber and a first color side wall rubber on the side face of a carcass member formed in a toroidal shape by winding, a plurality of turns, a continuous second color rubber ribbon and a continuous first color rubber ribbon thereon, stamping a second color cover rubber on the outsides of the side wall rubbers by winding a rubber sheet whereon one turn in an annular shape, and molding a green tire, whereby the use of a large extrude can be eliminated, different types of tires can be efficiently manufactured since a size switching can be easily performed, the accuracies of the shape and the dimensions of the members thereof can be increased, the uniformity and the tire balance thereof can be increased, and the sharp profile of the first color characters or lines can be assumed, thus eliminating problems associated with the appearance.

Abstract: A run-flat support body and a method assembling the same that improves reliability during running by eliminating mechanical joint components and realizes weight reduction and uniform mass-production are provided. The run-flat support body of the present invention comprises a pair of elastic rings fitted to a rim of a wheel and an annular shell bridging between these elastic rings. In the run-flat support body, the elastic rings and the annular shells are integrally joined, at least one discontinuous spot is provided in a circumference of the annular shell and the elastic rings, a connection structure is formed in which butted ends of the annular shell are joined together by welding, and joining between the annular shell and the elastic ring is partially released in the vicinity of a butted position of the annular shell.

Abstract: A tire manufacturing method includes a method for optimizing the uniformity of a tire by reducing the green tire radial runout. The green tire radial runout is modeled as a vector sum of each of the vectors representing contributions arising from the tire building steps. A set of vector coefficients is generated from the vector equation. The building steps include building the tire carcass, building the tire summit, transferring the summit onto the inflate carcass, and measuring the radial runout and tooling angles at each step in the process. After the model is built the vector equations and coefficients are applied to subsequent tires. By adjusting the tooling angles, green tire radial runout can be optimized.

Abstract: Provided are a pneumatic tire, a method of producing the pneumatic tire, and a tire curing mold, with which decrease in wet performance of a pneumatic tire in a worn state can be effectively prevented while chipping of land portions such as blocks is prevented in releasing the tire from a mold. The pneumatic tire of the present invention includes: a tread portion provided with groove portions and land portions; and sipes provided in the land portions. Each of the sipes has at least one end, in a longitudinal direction, being terminated within the corresponding land portion. Each sipe is provided with: a first offset portion protruding toward one side in a sipe thickness direction; and a second offset portion protruding toward the other side in the sipe thickness direction at a position on an inner side, in a tire radial direction, of a position at which the first offset portion protrudes.

Abstract: Process for producing tyres, in which the crosslinking of a composition is carried out, this composition comprising: (a) an elastomeric polymer containing epoxide groups, and (b) an oligomer of a fatty acid. On heating, the elastomeric material reaches a high degree of crosslinking without the addition of conventional crosslinking agents, with crosslinking times contained within limits that are acceptable for industrial use. These compositions are particularly suitable for the production of tread bands.

Abstract: A pneumatic tire is molded by using a vulcanizing mold in which blades 20, each composed of a metal thin plate having an inclined portion 20a in the depth direction and a plurality of through holes 20G with the same sectional form as that of projections to be formed in the sipe in the inclined portion 20a are buried in a groove portion corresponding to the tire block of the vulcanizing mold, thereby forming 3D sipes having unevenness in the radial direction of the block and a plurality of pairs of projections in the inclined portion in the block of the tire. Thereby, when longitudinal force is applied to the tire, adjacent small blocks of the block come into close contact with each other only at the positions of the projections of the 3D sipes, thereby making it possible to ensure the block stiffness of the pneumatic tire 10 without reducing the drainage function.

Abstract: A tire includes a tread in which there is provided a molded channel. The molded channel is interrupted by at least one furrow of the tread and extends along a curved path. The path of the molded channel is preferably substantially parallel to an outside surface of the tread in a radial section plane of the tire.

Abstract: This application relates to rollers that may be used to apply pressure onto one or more sheets of material.

Abstract: A green tyre is built on a rigid toroidal support externally having a forming surface of a conformation corresponding to an inner conformation of the tyre. The built tyre is removed from the rigid toroidal support and engaged on an expandable toroidal support which includes a bladder. The green tyre engaged on the expandable toroidal support is introduced into a vulcanisation mould and submitted to a vulcanisation cycle.

Abstract: An automatic pressure and temperature control apparatus and method for use in curing tire assemblies including retread tire assemblies is provided. Using water as a heating medium, a new process control method and apparatus is described that allows a more precise control of process variables during steady state conditions such that heat transfer is improved and the undesirable formation of steam is eliminated. Existing processes and equipment for curing tire assemblies can be modified, using the teaching disclosed herein, to implement and achieve the benefits of the present invention.

Abstract: Provided is a rubber member sticking device which prevents a sheet material held from becoming deformed and stretching during a separation operation, thus suppressing loss of energy and eliminating traces of vacuum holes. When an unvulcanized rubber sheet 12 is stuck, the unvulcanized rubber sheet 12 is supported by a separating surface 14A of a flat plate 14 and fitting surfaces 19A of a lifting member 16 without a difference in level being created therebetween. In this state, the unvulcanized rubber sheet 12 is in close contact with the fitting surfaces 19A of the lifting member 16. When the unvulcanized rubber sheet 12 is separated, a hydraulic jack 20 lowers the lifting member 16 to create a difference in level between the separating surface 14A of the flat plate 14 and the fitting surfaces 19A of the lifting member 16 so that the unvulcanized rubber sheet 12 is supported only by the separating surface 14A of the flat plate 14.

Abstract: The present invention relates to a method of retreading a tire and a retread tire (10) made by this method. The method comprises the steps of providing a tread layer (40) having a tread side (44) and a sole side (46) wherein the surface of the sole side (46) includes a plurality of tread elements (48) such as sipes and/or grooves or other void. Each tread element (48) has a first edge (64) and a second edge (66) at the surface of the sole side (46) of the tread layer (40). At least one of the first edge (64) and second edge (66) is formed to have a break edge (84) such as a rounded edge or a chamfered edge of 0.4 mm or more. The break edge (84) removes the sharp corner and provides increased endurance for the retreaded tire (10).

Abstract: The present invention provides a method of manufacturing a pneumatic tire, which can prevent an air pocket from being generated in a vicinity of a spliced portion of a sheet member (B) to be attached to an inner liner, even in the case of using, as the inner liner, a sheet member (A) made of a composition containing a resin component. The method includes a step of laminating a sheet member (A) and a sheet member (B) while being pressed on a making drum. The sheet member (B) is made of a rubber composition, and has two end portions in the circumferential direction overlapped and spliced with each other. In the method, a cut line of each end of the sheet member (B) in the circumferential direction has a vertex in the intermediate point in the width direction of the sheet member (B). Moreover, the cut line is displaced in the opposite direction to the rotational direction of the making drum as extending from the vertex to each of the right and left edges in the width direction.

Abstract: Provided is a pneumatic tire in which the adhesion of a noise absorbing member formed of a porous material is improved. A pneumatic tire according to the present invention includes a resin layer, a noise absorbing member and a locking member. The resin layer is formed of any one of a thermoplastic resin and a thermoplastic elastomeric composition obtained by dispersing an elastomer in a thermoplastic resin, and is formed on at least a part of the inner surface of the tire. The noise absorbing member is formed of a porous material, and is disposed on the resin layer. The locking member is formed of a thermoplastic resin, and is bonded to the resin layer through the noise absorbing member by thermal fusion.

Abstract: Process for manufacturing tires includes the following steps: forming at least one layer including a crosslinkable elastomeric material on an outer surface of a toroidal support the shape of which substantially matches that of the inner surface of the tire; manufacturing a green tire on the toroidal support bearing the at least one layer, the green tire including at least one structural element including a crosslinkable elastomeric material; wherein one crosslinkable elastomeric material of the at least one layer includes a crosslinkable elastomeric composition including at least one sulfur-curable elastomeric polymer and at least one compound having the following general formula (I): A-(S)p—B wherein: p is an integer of 2 to 10; and A and B, which may be the same or different from each other, represent a group having the following general formula (II):

Abstract: A method for manufacturing a pneumatic tire, including the steps of intermittently crimping volume adjusting members on both side sections of a sheet inner liner material in a longitudinal direction thereof beforehand, winding the inner liner material on an outer peripheral side of a forming drum, winding a sheet carcass material on an outer peripheral side of the inner liner material, forming an unvulcanized tire containing the inner liner material and the carcass material, and vulcanizing the unvulcanized tire. The volume adjusting members are intermittently arranged in a tire circumferential direction between the inner liner material and the carcass material.

Abstract: A method and apparatus for making a preassembly of built in sealant useful in tire manufacturing. The method of making the preassembled sealant includes extruding a center strip and at least two axially outer strips of a sealant onto a first conveyor belt; wherein the center strip and the axially outer strips are in a side by side adjacent relationship. Conveying the center strip onto a second conveyor while the axially outer strips are conveyed on the first conveyor belt towards the end of the belt, wherein the center strip has two outer edges, wherein a divider strip is applied to each other edge in a continuous manner, wherein the center strip is then conveyed onto the axially outer strips and then stitched together forming a preassembled component.

Abstract: Loading apparatus and method for positioning a green tire and core assembly into a toroidally shaped mold includes a stand assembly having a support surface operatively receiving a first mold sidewall forming segment thereon, the surface having a central opening. A spindle engagement assembly projects upwardly through the support surface central opening and includes a coupling mechanism at a forward end operatively mating with a first spindle end of a tire building core. The coupling mechanism operatively suspends a sidewall of a green tire on the tire building core a distance above a first mold sidewall forming segment positioned on the stand support surface. The spindle engagement assembly moves axially between a raised position and a lowered position and, in the lowered position operatively places the sidewall surface of the green tire on the first mold sidewall forming segment.

Abstract: A tire forming mold has a side mold portion and an annular mold portion fitted to an outer side in a tire diametrical direction of the side mold portion at a time of clamping the mold, wherein the annular mold portion is constructed by a combination of sectors which are divided in a tire circumferential direction, and each of the sectors is capable of displacing in the tire diametrical direction, wherein a fitting diameter of the annular mold portion is set to be equal to or more than a fitting diameter of the pair of side mold portions, an annular rubber introduction groove extending along the tire circumferential direction is provided at least in one of a fitting surface of the annular mold portion and a fitting surface of the pair of side mold portions, and a shallow groove portion is formed in an introduction port of the rubber introduction groove.

Abstract: A manufacturing method for annular run-flat tire support which has a supporting part and a leg part, and which, at the time of run-flat running, is capable of carrying load, comprises the steps of supplying said supporting part and said leg part, applying a bonding agent including a chemical conversion treatment to the bonding region of the radial-direction inside end part of said supporting part that is provided for bonding to said leg part, and bonding between said radial-direction inside end part and said leg part. Thereby, a manufacturing method for run-flat tire support which maintains a high bondability between the supporting part and the leg part, and is excellent in durability, and a run-flat tire support are provided.

Abstract: A run-flat support member having an annular shell for supporting a tread portion when a pneumatic tire is operated in a run-flat condition. The annular shell is formed from a shell body which is annularly curved and has opposite circumferential edges that are butted against each other and are joined. The shell body is structured such that the butted opposite circumferential edges come into contact with each other by forces acting in directions where they are butted against each other.

Abstract: A vulcanisation apparatus and method for tyres for vehicle wheels includes the steps of: placing a green tyre, arranged on a toroidal support, inside a vulcanisation mold; connecting a supply device of at least one pressurised primary working fluid and a supply device of at least one pressurised secondary working fluid to the vulcanisation mold in a prevulcanisation and molding station; at least partially vulcanising a radially internal portion of the green tyre on the toroidal support; transferring the mold to a vulcanisation station and completing the vulcanisation of the prevulcanised tyre by supplying the at least one pressurised primary working fluid inside the toroidal support.

Abstract: In producing a side-reinforced type runflat tire in which side reinforcing rubbers with generally crescent-shaped sections are interposed between a carcass and an inner liner, the first drums 11a, 11b on which the side-reinforcing rubbers are to be attached are so configured that their diameter do not substantially fluctuate along the axial direction. The expanding operation of the first drum, the mutually approaching operation of the first drums 11a, 11b and the approaching operation of the bead gripping rings 30A are synchronized. As a result, there is provided a tire and a method of its production capable of being produced by a multi-size mixed flow production system consisting of minimum equipments and of preventing air inclusions and wrinkles between the carcass member 4A and the side-reinforcing rubber 2A.

Abstract: A multi-layer odor barrier catheter tube for a fecal drainage catheter. The external surface has a low coefficient of friction, as does the internal surface. The layers of the catheter tube may be co-extruded, or formed as a heat-laminated film rolled into a cylindrical shape and heat-welded. A flexible scrim may be included intermediate the first and third layers. One or more tie layers may be included between at least one of the first and second layers, or the second and third layers. A combination of a multi-layer odor barrier catheter tube with an odor barrier collection bag is also described.

Abstract: A method of effecting an improved adhesive bond between a rubber surface and a device adhered thereto is disclosed. In pneumatic tires, monitoring devices are more securely adhered to the innerliner of the tire utilizing a room temperature vulcanizable adhesive wherein curing is facilitated in the presence of moisture. The innerliner formulation is prepared by incorporating a material which has incomplete compatibility with the rubber of the innerliner formulation, and which has hygroscopic properties which thereby tends to attract moisture.

Abstract: A chipper and apex subassembly 100 as an intermediate article of manufacture in a pneumatic tire has an apex strip 30 formed as a continuous elastomeric strip of unvulcanized material having a bottom base portion 31 and two opposing sides 33, 34 extending towards the narrow outer tip 32 and a chipper ply strip 40 reinforced with parallel cords oriented on a bias angle relative to the length of the strip cojoined to the apex 30 along the length of the strips and attached to one side of the unvulcanized apex strips on an outer surface. The chipper 40 is spaced from the bottom base portion 31 of the apex 30 and extends widthwise towards the narrow outer tip 32 to form a subassembly 100 of a chipper 40 and apex 30 as an intermediate article of manufacture. Additionally the subassembly 100 can be attached to bead core 12 to make a subassembly 200 as a further intermediate article of manufacture.

Abstract: A smooth resin film including an ultraviolet ray absorbing agent is pasted to an outer surface of a side portion of an unvulcanized tire, the unvulcanized tire is vulcanized and molded in a state of pasting the resin film, thereby, a pneumatic tire provided with the resin film at the outer surface of the tire side portion to be able to be exfoliated therefrom is fabricated.

Abstract: A pneumatic tire provided with a resin film at an outer surface of the tire side portion to be able to be exfoliated therefrom by pasting a smooth resin film having a melting point equal to or higher than 23° C., a Young's modulus equal to or larger than 2.5 GPa and a thickness of 10 through 150 ?m to an outer surface of a side portion of an unvulcanized tire and vulcanizing and molding the unvulcanized tire in a state of pasting the resin film.

Abstract: A resin film having a melting point equal to or higher than 230° C. and a thickness of 20 through 150 ?m is pasted to an outer surface of a side portion of an unvulcanized tire and by vulcanizing and molding the unvulcanized tire in a state of pasting the resin film, a pneumatic tire provided with the resin film at the outer surface of the tire side portion to be able to be exfoliated therefrom is fabricated.

Abstract: A tire for a vehicle wheel includes a carcass structure, a belt structure, a tread, a pair of sidewalls, and at least one layer of sealing composition placed in a radially inner position with respect to the tread. The carcass structure includes at least one carcass ply shaped in a substantially toroidal configuration. Opposite lateral edges of the carcass structure are associated with respective bead wires. The belt structure includes at least one belt strip. The sealing composition includes at least one high molecular weight amorphous polymer, at least one low molecular weight amorphous polymer, and at least one reinforcing filler. The sealing composition is substantially non-crosslinked and has a flowability value, measured at a temperature of 100° C. and at a pressure of 30 bar, not higher than 30 cm3/s. A process for producing the tire for a vehicle wheel is also disclosed.

Abstract: A motorcycle tire having excellent belt cord durability, high-speed durability, impact force absorbability, running stability and uniformity performances is produced by constituting a belt with a low-cost steel cord member having a specified twisting construction of 2 to 7 filaments and a specified space between the mutual filaments over a full length of the cord in the belt.

Abstract: A green tyre disposed on a toroidal support is introduced into a vulcanisation mould. The mould is closed through axial approaching of a pair of half shells acting against the sidewalls and the tread band of the tyre. Circumferential sectors set to operate against the tyre tread band are maintained spaced apart from the tread band itself during admission of a working fluid designed to press the tyre against the toroidal support. Subsequently the sectors are centripetally approached to cause penetration of forming ridges movable in through slits into the tread band, concurrently with a step of full moulding and vulcanisation of the tyre carried out through admission of steam under pressure into the tyre itself.

Abstract: The present invention relates to an article and a method of improving vehicle mileage by modifying and increasing the tire tread pressure above the internal tire air pressure resulting in lowering the rolling friction.

Abstract: A machine (1) and method for applying a tread (2) to a carcass (3) of a tire (4); the machine (1) has a rotary drum (5) supporting the carcass (3), a feed conveyor (6) for feeding the tread (2) to the rotary drum (5), a pressure roller (7) contacting the tread (2), an actuating device (8) for pushing the pressure roller (7) against the tread (2) with a force (F) of adjustable intensity, and a control unit (9) for regulating the intensity of the force (F) as a function of an error variable (E) calculated as the difference between the length (RCC) of the remaining portion of the circumference of the carcass (3), and the length (RTL) of the remaining portion of the tread (2); and the control unit (9) regulates the intensity of the force (F) by means of a proportional control block (12) having a gain (Kp) varying as a function of the value of the error variable (E) and as a function of the rate of change of the error variable (E).

Abstract: A tire is designed using a tire FEM model by obtaining an optimal solution for a tire structure which optimizes an objective function with a tread pattern shape kept fixed and performing a numerical optimization for obtaining an optimal solution for the tread pattern shape which optimizes the objective function with the tire structure kept fixed. The optimization for the tire structure is performed using a tire model having a tread pattern shape optimized at the immediately preceding cycle of the operation of optimizing the tread pattern shape. The optimization for the tread pattern shape is performed using a tire model having a tire structure optimized at the preceding cycle of the operation of optimizing the tire structure. The optimizing operations are repeated until convergence of optimal solutions obtained by those operations takes place.

Abstract: In a method for manufacturing tyres for vehicle wheels, a green tyre, once formed, is transferred into a vulcanisation mould and pressed against the holding walls of a moulding cavity. Concurrently with the pressing step, a fluid present between the green tyre and the holding walls is evacuated through vent valves. The tyre is brought into contact with the closing head of each valve so as to push it toward a closed position of the valve itself. The closing head has a distal portion facing the moulding cavity and includes at least one grip element for the tyre blend, so that the closure member is pulled toward the open position while the moulded and cured tyre is moved away from the inner surface of said moulding cavity.

Abstract: In a tire design method, a numerical optimization is performed according to a basis vector process using an FEM model to obtain an optimal solution which optimizes an objective function for a tread pattern shape. A numerical optimization is performed according to an ECAT using the FEM model to obtain an optimal solution which optimizes the objective function for the tread pattern shape. Either of the calculations is executed first, and the optimal solution obtained at the first calculation is used as an initial shape when the other numerical optimization is performed.

Abstract: A producing method of a steel cord play includes first and second topping steps. In the first topping step, a first topping rubber is concentrically attached to a periphery of each steel cords. With this, steel cords having rubber which are pre-coated with the first topping rubber are formed. In the second topping step, a second topping rubber is attached to at least one surface of a steel cord array in which the steel cords having rubber are arranged, thereby forming a sheet-like steel cord ply. The first topping step is carried out immediately before the second topping step.

Abstract: A segmented mold 2 for molding a tire 100 is described which has a central axis; plurality of radially movable tread forming segments; two sidewall forming plates, a top sidewall forming plate 8, and a bottom sidewall forming plate 6; a top locking ring 10 having a plurality of circumferentially spaced means 30 for locking the segments 4, each means for locking 30 providing a predetermined angular path 75 for radially contracting the segments 4 upon closing the mold 2 in a locked position. The segmented 2 mold for molding a tire 100 further has a bottom locking ring 20 having a complementary plurality of circumferentially spaced means 30 for locking the segments 4, each means for locking 30 providing a predetermined angular path for radially contracting the segments 4 upon closing the mold.

Abstract: A tire is disclosed that includes at least one annular bead wire forming a body of revolution about a reference axis. A carcass ply of generally toroidal shape about the same axis as the bead wire has a portion that is folded around the wire. A materials interface is defined at least in part by the junction between a rubber first mass and a second mass that includes an electronic member. By way of example, the electronic member is a passive radiofrequency identification transponder. The interface extends from a free edge of the folded portion of the carcass ply radially away from the reference axis to a circumferential junction line between the interface and the carcass ply.

Abstract: A method for producing a mould lining (G) intended for the manufacture of tires comprising tread blocks that have incisions in them and studs. A mould lining is produced by positioning lamella (L1, L2, L3, L4, L5, L6) of substantially equivalent shape and length on the parts of the lining (G) that are intended to mould the rubber blocks. In a next step, the material of the lining (G) and of the lamella (L1, L2, L3, L4, L5, L6) contained in a cylindrical space located at each of the sites intended to accept pins capable of moulding the housings for the studs is removed radially, and an insert supporting a pin is positioned in the hole obtained beforehand.

Abstract: A tire with reduced rolling noise includes a tire structure formed of at least one crown extended by two sidewalls and two beads. A base of each of the two beads is configured to be mounted onto a rim seat. The tire also includes a carcass-type reinforcing structure anchored into the two beads and an additional layer bonded to an inner wall of the tire structure. The additional layer is bonded to the tire structure at its edges and the rest of the additional layer is not bonded. The additional layer includes an inflation valve.