Abstract: An assembly of a tyre and a member fitted to the tyre respectively include complementary connecting portions. The connecting portion of the member is more flexible than that of the connecting portion of the tyre.

Abstract: A tire defrosting system includes a tire having steel belts and a tire tread covering the steel belts, and a power source electrically connected to said steel belts of said tire. The power source provides electrical current to the steel belts so as to heat and increase the temperature thereof and in turn the tire tread so as to melt an accumulation of snow or ice on the tire thread. The power source, such as a car batter, is electrically connected to the steel belts by a pair of wire conductors. The tire includes a thermometer to monitor the internal temperature thereof and to provide an automatic shutdown mechanism.

Abstract: A pneumatic tire has a rubber member constructed by a rubber ribbon winding body formed by spirally winding a rubber ribbon. The rubber ribbon includes a composite rubber ribbon which is formed by a non-conductive rubber, and a conductive rubber partly covering the non-conductive rubber. The composite rubber ribbon has a flat cross sectional shape and is gradually reduced in its thickness toward both ends. The conductive rubber has a cross sectional area which is equal to or less than 3% of a cross sectional area of the composite rubber ribbon, and forms a surface in one side and a surface in the other side in both ends of the composite rubber ribbon. The composite rubber ribbons that are adjacent in the width direction are partly overlapped, and a conductive route is provided by the conductive rubber connected between the composite rubber ribbons.

Abstract: A tire is described that includes a casing defining a cavity and equipped to receive an object, such as an electronic circuit, for example, through use of a two-part attachment, such as a touch-close attachment, of which a first part is fixed to a wall of the casing and a second part can be joined to the first part when placed in contact with the first part to keep the object on the casing in a service position. The first part of the attachment includes connection elements that are an integral part of the wall of the casing of the tire. The connection elements allow these two parts to have freedom to move relative to each other, thereby limiting the transmission of stresses, which affect the wall of the tire, to the object. The connection elements may be loops of flexible thread formed by the extremities of turns of a coiled thread integrated into the wall of the tire during the tire's manufacture.

Abstract: An object is to reduce a cycle time for fabricating a low rolling resistance pneumatic tire and to provide the same pneumatic tire. As a means therefor, in building a tread portion by winding spirally a rubber strip material whose cross section is divided into a first region made of a conductive rubber and a second region made of a non-conductive rubber in a tire circumferential direction in a partially overlapping fashion by the use of an extruding machine which extrudes continuously the rubber strip material, an area ratio of the first region relative to the cross section of the rubber strip material is made to change in a tire width direction.

Abstract: Next-generation intelligent tire systems, such as active and adaptive tire systems and methods, are disclosed. Various embodiments of the invention can sense actual tire, road and driving conditions and characteristics, and/or respond to externally controlled influences, and dynamically adapt thereto, thereby improving vehicle and passenger safety.

Abstract: A pneumatic tire has a conductive portion formed by a conductive rubber is provided in the tread rubber formed by a nonconductive rubber. The conductive portion has an outer skin portion and a projection portion. The outer skin portion is formed on a surface of the tread rubber, and extends to an inner side in a tire width direction from a side surface of the tread rubber so as to terminate at a position which goes beyond a contact end. The projection portion spirally extends from a position in an outer side than contact end so as to reach a position in an inner side in the tire width direction than the contact end, and protrudes to an inner side in a tire diametrical direction from the outer skin portion so as to terminate without reaching a bottom surface of the tread rubber.

Abstract: A tire monitor assembly includes a rubber ply having a first side affixable to an interior surface of a tire. A pedestal extends from a second side of the rubber ply, wherein the pedestal has a top surface and at least one sidewall. The pedestal has a groove disposed in the at least one sidewall that extends along a perimeter of the pedestal, wherein the pedestal has a cavity disposed in the top surface, extending towards the rubber ply. The assembly further includes a tire monitoring device and a fastener connected to the tire monitoring device and further connected to the pedestal such that the fastener is disposed in at least one of the cavity and the groove.

Abstract: A pneumatic tire has a carcass ply, a tread rubber, a side wall rubber and a rim strip rubber. A topping rubber of the carcass ply and the side wall rubber are formed by a non-conductive rubber. The rim strip rubber is formed by a conductive rubber. A height of an outer end of the rim strip rubber is equal to or more than 50% of a tire cross section height. JIS A hardness of the side wall rubber is equal to or more than 59 degrees. A side conductive layer formed by the conductive rubber is provided between the side wall rubber and the carcass ply. The side conductive layer is connected to the tread rubber and the rim strip rubber. A conductive route reaching the outer end of the side conductive layer from a ground-contacting surface is constructed in the tread rubber.

Abstract: A tire that discharges static electricity from a vehicle to a road surface includes tread rubber 2G that includes base portion 9 made of a non-conductive rubber which is disposed radially inward and extends continuously from one tread edge e1 side to the other tread edge e2 side, cap portion 10 made of a non-conductive rubber and disposed radially outward of the base portion 9 to form ground-contacting surface 2a, and conductive portion 11 made of a conductive rubber and having one end exposed on the ground-contacting surface 2a and the other end connected to sidewall rubber 3G electrically conductive with a rim when the tire is mounted on the rim. The cap portion 10 are divided into right and left and includes first cap portion 10A and second cap portion 10B.

Abstract: A tire and electronic device assembly is disclosed, the electronic device measuring one or more tire parameters. The electronic device attaches to a cellular insert member to create a sub-assembly, the insert member having an inward surface attached on a centerline of the tire to an inward facing tire surface defining a tire cavity. The electronic device attaches to the cellular insert member between raised regions of the cellular insert member with an outward surface of the device uncovered and exposed and recessed below outward boundaries of the raised regions.

Abstract: A pneumatic tire has a conductive portion formed by a conductive rubber is provided in the tread rubber formed by a nonconductive rubber. The conductive portion has an outer skin portion and a projection portion. The outer skin portion is formed on a surface of the tread rubber, and extends to an inner side in a tire width direction from a side surface of the tread rubber so as to terminate at a position which goes beyond a contact end. The projection portion spirally extends from a position in an outer side than contact end so as to reach a position in an inner side in the tire width direction than the contact end, and protrudes to an inner side in a tire diametrical direction from the outer skin portion so as to terminate without reaching a bottom surface of the tread rubber.

Abstract: A tire pressure sensing system includes a tire patch having first and second faces. A plate fixed to the second face is oriented perpendicular to a tire patch longitudinal axis. A sensor mount is positioned on the first face and oppositely facing with respect to the plate. The sensor mount includes opposed first and second bias clips and is oriented perpendicular to the tire patch longitudinal axis. At least one plate fastener extends through the tire patch fixes the plate to the second face and the sensor mount to the first face. A tire pressure sensor is releasably retained by first and second sensor fasteners and the first and second bias clips to the sensor mount. The tire pressure sensor is oriented perpendicular to the longitudinal axis. The tire patch is permanently connected to a tire inner tread wall having the longitudinal axis coaxially aligned with a tire radial centerline.

Abstract: A pneumatic tire includes a tire body having a crown portion and a pair of sidewalls. At least one reinforcing belt is disposed in the crown portion of the tire. A tag is carried by the reinforcing belt. In one embodiment, the tag is disposed in the location of one of the reinforcing cords that is disposed in the reinforcing belt. In another embodiment, the tag is disposed at the splice of the reinforcing belt. An alternative version of the tire has the tag carried in a depression formed in the outer surface of the tire sidewall. The tag may be encapsulated with an encapsulation material that is also disposed in the depression.

Abstract: Provided is a pneumatic tire using a rubber composition which makes it possible to keep rolling resistance low, prevent the accumulation of static electricity during the running of the tire, suppress an increase over time in electrical resistance of the tire, and improve durability. The present invention relates to a rubber composition, including: a rubber component including two or more diene rubber; and carbon black having a nitrogen adsorption specific surface area of 400 m2/g or more in an amount of 5 to 30 parts by mass per 100 parts by mass of the rubber component, wherein the rubber composition has a degree of carbon black dispersion determined by counting agglomerates based on JIS K 6812 “Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin pipes, fittings and compounds” of 90% or more.

Abstract: The invention relates to a pneumatic vehicle tyre (1) of radial design having a carcass (4) and having components (9, 10) which adjoin the carcass (4), wherein thread-shaped elements (11) are arranged on at least one of the two surfaces of the carcass (4) and preferably serve to discharge occluded air between the carcass (4) and the adjoining components (9, 10) during the construction of the tyre. In order to improve the electrical conductivity of the pneumatic vehicle tyre (1), at least one thread-shaped element (11) has a coating which is electrically conductive and jointly forms an electrically conductive, thread-shaped element (12) which has an electrical resistance of <1×107 Ohm/cm. The invention also relates to a method for manufacturing the electrically conductive coating.

Abstract: A pneumatic tire includes a tread base comprised of a first material, a tread cap comprised of a second material, and a ring comprised of a third material. The tread cap is disposed radially outward of the tread base and in operational contact with a ground surface. The ring is disposed at least partially within the tread cap and extends radially away from the tread base. The ring has a stiffness in the radial direction greater than stiffnesses in the circumferential and lateral directions. The third material has a substantially lower hysteresis than the second material during operation of the pneumatic tire. The third material further provides an electrical conductivity path to the ground surface.

Abstract: A tire is described that includes a casing designed to be inflated to a service pressure and equipped to accept a functional object, such as an electronic circuit, for example, by means of a two-part fastener 10, such as a touch-close fastener, for example. A first part of the fastener is attached to a wall of the casing, while the second part can be joined to the first part when placed in contact with the first part to attach and keep the object on the casing when the tire is in service. The first part of the fastener includes a thin backing fixed to the wall of the casing and possessing a structural elongation capacity greater than or equal to that of the wall to which the thin backing is fixed. The presence of the thin backing does not significantly hinder the elongation of the wall of the casing when subjected to the stresses encountered during use of the tire and, where relevant, during its manufacture.

Abstract: An assembly for use in or on a tire. The assembly comprises an electronic device having a body and an adhesive coating on at least the body of the electronic device. The body is at least partially made of a plastic material or a fiber reinforced plastic (FRP). The adhesive coating comprises an imide-based adhesive. The adhesive coating may have a polymer bonding group comprising at least one of natural rubber, butyl rubber, a chlorinated elastomer, polybutadiene, synthetic polyisoprene, or styrene-butadiene rubber or a combination thereof. In one embodiment, the assembly further comprises a first elastomeric layer and a second elastomeric layer. The adhesive coating secures the body to the first and the second elastomeric layers. The first and second elastomeric layers may comprise a butyl-containing compound or natural rubber compound. In one embodiment, the electronic device is a radio frequency identification tag having the body and an antenna.

Abstract: A diametrical conductive portion extending in a tire diametrical direction in a tire meridian cross section is provided at least in a nonconductive position in a side rubber portion which is constructed by a side wall rubber and a rim strip rubber, a conductive branch portion is provided so as to be branched from the diametrical conductive portion, extend to at least one in a thickness direction of the side rubber portion and pass through an inner portion of the side rubber portion, and the conductive branch portion is arranged at a position which sections at least half position in the thickness direction of the side rubber portion into an outer side in a tire diametrical direction and an inner side in the tire diametrical direction, and is formed by a conductive rubber which has a different hardness from a rubber hardness of the side rubber portion.

Abstract: A pneumatic tire that can be manufactured according to the conventional method without requiring special tire manufacturing steps and without needing addition of material members and production steps, and having excellent rolling resistance and wet properties, and having conductivity is to be provided. A pneumatic tire 10 comprises a carcass 14 having a ply which is turned back and locked around a bead core 12, a rim strip 19 provided in a bead part 11, and a wing 24 in which one edge thereof is contacted with the carcass 14 and the other edge is exposed to the surface of a ground contact edge region of a tread part 13, wherein a covering rubber of a carcass ply 25, the rim strip 19 and the wing 24 are formed into a continuous conductive path by a conductive rubber material, only the conductive path is used as a conducting path of the tire 10, and members other than the conducting path are selected and used from a conductive rubber material or a nonconductive rubber material.

Abstract: A pneumatic tire capable of reducing rolling resistance and discharging static electricity generated during running, wherein each of a tread rubber, a breaker rubber, and a sidewall, respectively, has a volume specific resistivity of 1×108 ?·cm or more, the pneumatic tire further including a conduction rubber embedded in the tread part so as to be at least partially exposed to a surface of the tread part, a coating rubber disposed on the upper part of the breaker part, a bead part rubber, and side part electroconductive rubber electrically connecting the conduction rubber to the beat part rubber, wherein each of the conduction rubber, the bead part rubber, the coating rubber and the side part electroconductive rubber has a volume specific resistivity of less than 108 ?·cm.

Abstract: A pneumatic tire comprising a carcass and a tread located radially outward of the carcass and extending between the tire sidewalls is disclosed. The tread provides a tread running surface and comprises a first, radially outer tread layer comprising a first rubber compound and a second, radially inner tread layer comprising a second rubber compound, wherein the second tread layer is located radially adjacent to the first tread layer, and wherein the first rubber compound is different from the second rubber compound. The second tread layer comprises a plurality of integrally formed extensions of the second tread layer extending from the second tread layer radially outwardly to the tread running surface. The first rubber compound and the second rubber compound each comprise at least at least 30 parts per hundred parts of rubber (phr) of silica. Each of the extensions has a width as measured in the axial direction of the tire in a range of from 1 to 15 mm.

Abstract: An object is to provide a pneumatic tire which can exhibit a static elimination function in an ensured fashion and be fabricated easily. As a means therefor, there is provided a pneumatic tire in which a conductive layer 12a and a non-conductive layer 14a are wound alternately in a tire circumferential direction in a partially overlapping fashion at least in part of a tread portion, characterized in that the conductive layer 12a is provided wider than the non-conductive layer 14a.

Abstract: A pneumatic tire has a tread rubber made of a nonconductive rubber. The tread rubber is provided with a first and second conductive portions made of a conductive rubber. The first conductive portion extends radially inwardly from a ground-contacting surface, extends to one side in tire width direction, and reaches a carcass layer or a side wall rubber. An exposed position of the first conductive portion is separated from a tire equator at a distance is equal to or more than 10% of a ground-contacting width. The second conductive portion extends radially inwardly from the ground-contacting surface, extends to another side in tire width direction, and reaches the carcass layer or the side wall rubber. An exposed position of the second conductive portion is separated from the tire equator at a distance is equal to or more than 10% of the ground-contacting width.

Abstract: A method of estimating the available grip margin of a tire of a vehicle rolling on a ground involves: estimating a quantity Rslip ca, i.e., the ratio of the slip contact area and the total contact area of the tire on the ground; determining, in a signal processing unit, the grip potential used P?,used and/or the available grip margin of the tire P?,avail from the quantity and pre-established data corresponding to the type of the tire, where P?,avail=1?P?,used; and recording in a memory the grip potential used and/or the available grip margin of the tire.

Abstract: A pneumatic tire comprising a carcass and a tread located radially outward of the carcass and extending between the tire sidewalls is disclosed. The tread provides a tread running surface and comprises a first, radially outer tread layer comprising a first rubber compound and a second, radially inner tread layer comprising a second rubber compound, wherein the second tread layer is located radially adjacent to the first tread layer, and wherein the first rubber compound is different from the second rubber compound. The second tread layer comprises a plurality of integrally formed extensions of the second tread layer extending from the second tread layer radially outwardly to the tread running surface. The first rubber compound and the second rubber compound each comprise at least at least 30 parts per hundred parts of rubber (phr) of silica. Each of the extensions has a width as measured in the axial direction of the tire in a range of from 1 to 15 mm.

Abstract: The pneumatic tire of the present invention, in which a tread rubber, a sidewall rubber, and a breaker rubber each have an intrinsic volume resistivity of 1×108 ?·cm or more, a clinch rubber and a chafer rubber each have an intrinsic volume resistivity of 1×108 ?·cm or less, wherein the pneumatic tire has a first conductive layer that is disposed between a carcass ply, an edge portion of the breaker rubber and the sidewall portion, a second conductive layer that is in contact with the first conductive layer and is disposed between the tread rubber and the carcass, and a pen rubber layer that extends from the second conductive layer to a surface of the tread portion, wherein the first conductive layer, the second conductive layer, and the pen rubber layer each have an intrinsic volume resistivity of 1×108 ?·cm or less, the carcass ply contains a conductive fibrous material having an intrinsic volume resistivity of 1×108 ?·cm or less and has a structure that the carcass ply is in contact with the clinch portion

Abstract: A pneumatic tire that can be manufactured according to the conventional method without requiring special tire manufacturing steps and without needing addition of material members and production steps, has excellent rolling resistance and wet properties, and has conductivity.

Abstract: The present invention provides a pneumatic tire for a motorcycle in which an electrically conductive layer made of an electrically conductive rubber can be reliably brought into contact with the road surface both during a straight travel for which motorcycles are most frequently used and in a tilted and stopping position of the motorcycle, and input forces into the electrically conductive layer can be suppressed at the time of tire rotation with load during the straight travel of the motorcycle to enhance wear resistance of the electrically conductive layer and to effectively remove the possibility of detachment. The pneumatic tire is formed by a single-layer structure, and comprises a tread portion 1 including a tread rubber 6 and forming a road-contacting surface 7; a pair of side wall portions 2 each extending radially inward from a respective side portion of the tread portion 1; and bead portions 3 extending radially inward from each of the side wall portions.

Abstract: A pneumatic tire has a tread rubber provided in an outer side of a carcass layer in a tread portion. the tread rubber has a cap portion which is formed by a non-conductive rubber and constructs a ground-contacting surface, a base portion which is provided in an inner side in the tire diametrical direction of the cap portion, and a conductive portion which is formed by a conductive rubber and extends in a thickness direction of the tread rubber so as to reach a bottom surface of the tread rubber from the ground-contacting surface. A thickness of the conductive portion is made relatively large in a center portion in the thickness direction of the tread rubber, and the thickness of the conductive portion is made relatively small in both end portions in the thickness direction of the tread rubber.

Abstract: A solid tire for a wheel comprising electrically conducting means (15) made according to the method of any one of claims 1-16 comprising a cured first cylindrical layer (1) comprising a first outer circumferential surface (10) provided for contacting the ground, the first layer (1) having an electrical resistance being larger than 1010 ?cm, the tire (5) comprising an electrically conducting path (6) in electrical connection with the electrical conducting means (15) and extending through the first layer (1), the electrical conducting path (6) comprising a path-filling material (16) having a lower electrical resistance than the electrical resistance of the first layer (1), characterized in that the first layer (1) comprises less than 2 pphr carbon black, in that the first layer (1) comprises more than 30 pphr reinforcing filling material and in that the electrically conducting path (6) has a ground contacting surface (19) having an area of at least 150 mm2.

Abstract: A pneumatic tire that can be manufactured according to the conventional method without requiring special tire manufacturing steps and without needing addition of material members and production steps, and having excellent rolling resistance and wet properties, and having conductivity is to be provided.

Abstract: A patch and method for mounting an electronic monitoring device to the innerliner of a pneumatic tire is provided wherein the monitoring device is potted directly to an attachment patch. A frame is built on an attachment patch and the electronic monitoring device is disposed inside the frame. An encapsulation material is poured into the frame and cured to encapsulate the monitoring device directly against the patch. The patch may then be connected to the innerliner of a pneumatic tire.

Abstract: Accumulation of static electricity is prevented while enhancing rolling resistance performance of tire. Tread rubber 2G has tread rubber body 15 forming tread ground contact surface 2S, under tread 16 disposed radially inward of the tread rubber body, and terminal portion 17 penetrating the tread rubber body in the radial direction, the under tread 16 being in contact with cushion rubbers 13 each having cushion main portion 13A interposed between edge portion 7E of tread-reinforcing layer 7 and carcass 6 over an overlap width W1 of 1 mm or more. Tread rubber body 15, topping rubber 7G of tread-reinforcing layer 7 and sidewall rubbers 3G are made of an insulating rubber material 20 having a volume resistivity of at least 1×108 ?·cm, and under tread 16, terminal portion 17, cushion rubber 13, topping rubber 6G of carcass 6 and chafer rubber 11 are made of a conductive rubber material having a volume resistivity of less than 1×108 ?·cm.

Abstract: A tire-wheel assembly and disassembly method is disclosed wherein relative shifting of a tire and a wheel when braking and/or cornering can be suppressed without negatively affecting tire replacement workability. Specifically, a tire-wheel assembly has a wheel constructed from an electrically conductive material and a tire assembled on an outer peripheral side of the wheel, wherein an electrically conductive layer is formed on at least a part of a wheel contact surface of the tire, and an electrically debonding adhesive comprising an ionic liquid is interposed between the electrically conductive layer of the tire and the wheel. When disassembling this tire-wheel assembly, the tire is removed from the wheel after voltage is applied between the wheel and the electrically conductive layer of the tire and electricity is passed through the electrically debonding adhesive.

Abstract: The electronic device is intended to be incorporated into a tyre, and comprises an electronic component, at least one conductor (14) and a support (20) for the electronic component (12). The support (20) and the conductor (14) are joined together by a part (26A, 26B) for attachment of the support (20) and a part (14A) for attachment of the conductor (14). The device comprises: a rigidifying casing (28) overmoulded at least over the part (26A, 26B) for attachment of the support (20) and the part (14A) for attachment of the conductor (14), at least one intermediate transition layer at least partially overmoulded over the rigidifying casing (28).

Abstract: A system for measuring physical parameters of a tire, according to one embodiment of the present invention comprises a sensor layer and a circuit layer. The sensor layer is communicatively coupled to the circuit layer. The sensor layer is configured as a first thin film and embedded in the tire. The sensor layer provides a signal related to a physical parameter of the tire. The circuit layer is configured as a second thin film and embedded in the tire. The circuit layer processes the signal provided by the sensor layer.

Abstract: A tyre having a radially internal surface of substantially toroidal conformation, includes: a housing mounted on the internal surface of the tyre and an electronic unit at least partially housed in the housing, the housing including at least two portions, each having a cavity in contact with a respective portion of the electronic unit and housing the same, each portion of the housing being mounted on the internal surface of the tyre, and a fastening element applied to the portions of the housing to maintain a constraint between such portions and the electronic unit. A method of installing the electronic unit into a tyre.

Abstract: A pneumatic tire that can maintain processability and tire performance such as rolling resistance or a wet performance, overcome the problem of non-conductivity by a tread rubber of silica formulation or the like, and sustain conductive performance of a tire over a long period of time is provided.

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: An active and adaptive tire system is disclosed. The active and adaptive tire system comprises a tire and an active material configured to alter at least one characteristic of the tire in response to at least one condition. Also disclosed are an intelligent tire system and a method of monitoring a condition.

Abstract: In a pneumatic tire (20) on which a transponder (1) is mounted, a securing member (3) for securing the transponder (1) is fixed to an inner surface of the tire in an area (S) between a tire maximum-width position (A) and a bead toe (B). Thereby, a large centrifugal force and a large impact force do not act on the transponder (1) storing various pieces of information, and the transponder can be mounted quickly and securely. Also, the weight of the transponder is remarkably reduced, and thus uniformity of the tire (20) is enhanced. Additionally, dynamic balance correction is made easier. Even in a large tire, reduction in durability is minimized through suppressing heat generation and heat accumulation of the tire (20) due to the transponder (1) and the securing member (3).

Abstract: A tread for a vehicle tire, such as a pneumatic vehicle tire, is provided with an electrically conducting layer axially inside a portion of a first, radially outer rubber layer of the tread. The electrically conductive layer extends from a second, radially inner rubber layer of the tread on the radially inner side of the tread rubber material up to a ground contact surface of the tread. The rubber material of the electrically conducting layer and the rubber material of the radially inner rubber layer of the tread have a higher electrical conductivity than the rubber material of the radially outer rubber layer.

Abstract: A manufacturing method of a pneumatic tire in which a tread rubber formed by a nonconductive rubber is arranged in a tread portion, and a conductive portion which is formed by a conductive rubber and reaches a carcass layer or a belt layer from a ground surface is buried in the tread rubber, wherein a step of forming the carcass layer includes a step of forming a strip-like carcass ply by coating a plurality of carcass cords which are arranged in parallel, with a topping rubber constructed by a nonconductive rubber portion which is along an extending direction of the carcass cord, and a conductive rubber portion which is narrower than the nonconductive rubber portion, and a step of lining up a lot of the strip-like carcass plies in a ply width direction so as to bond the strip-like carcass plies sequentially.

Abstract: A pneumatic tire has a conductive portion formed by a conductive rubber is provided in the tread rubber formed by a nonconductive rubber. The conductive portion has an outer skin portion and a projection portion. The outer skin portion is formed on a surface of the tread rubber, and extends to an inner side in a tire width direction from a side surface of the tread rubber so as to terminate at a position which goes beyond a contact end. The projection portion spirally extends from a position in an outer side than contact end so as to reach a position in an inner side in the tire width direction than the contact end, and protrudes to an inner side in a tire diametrical direction from the outer skin portion so as to terminate without reaching a bottom surface of the tread rubber.

Abstract: A medallion assembly for a pneumatic tire, in accordance with the present invention, includes a protruding portion, a fastener, and a medallion. The protruding portion is integrally formed with a sidewall of the tire and extends away from the sidewall of the tire. The protruding portion has an annular tapered outer surface. The fastener has an annular tapered inner surface and an annular outer surface. The annular tapered inner surface engages the annular tapered outer surface of the protruding portion. The medallion has an annular inner surface for engaging the annular outer surface of the fastener such that the medallion is secured to the fastener and both the medallion and the fastener are secured to the protruding portion of the sidewall of the tire.

Abstract: A pneumatic tire according to the invention includes a cap rubber 12 as a non-conductive rubber layer and a conductive layer 13 that extends from the tread surface to the bottom surface of the cap rubber 12 through the cap rubber 12. The conductive layer 13 has a main portion 13a extending from the tread surface toward the inner periphery of the tire, and plural branch portions 13b branched from the main portion 13a and extending toward the outer periphery of the tire. At least, one of the branch portions 13b is exposed to the tread surface.

Abstract: A valve (30) for inflating tyres (10) of tyred wheels associable with a transducer (40) provided with electronic sensors for detection and transmission of certain operating parameters of the tyre (10), wherein the valve is arranged for being mounted on a rim (20) of a wheel for vehicles so that the valve (30) projects outside the rim (20) and the transducer (40) is positioned within a chamber (50) delimited by the tyre (10) and by the rim (20), said valve (30) comprising signalling means (70, 80) which, once the valve has been mounted, are visible from the outside of the wheel, where said signalling means are correlated univocally with the orientation of the transducer, and are arranged for indicating the position assumed by the transducer inside said chamber.

Abstract: A pneumatic tire includes a non-conductive tread surface and has an electrically conductive rubber in a wave-like or other configuration arranged in a tire circumferential direction. The tire has an electrically conductive sidewall rubber. Upper portions of the wave-like conductive rubber configuration are on the tread surface, while lower portions of the wave-like rubber configuration contact the electrically conductive sidewall rubber. As the tread surface and the electrically conductive rubber on the tread surface are worn away through use, the diametrically outermost portion of the electrically conductive sidewall rubber of the tire comes into contact with the ground and maintains an effective electrically conductive path.