Abstract: A cord for reinforcing tires, comprising a core of at least one p-aramid filament that has a modulus greater than about 6.5 N/dTex and a sheath of steel strands that are helically wound around the p-aramid filament.

Abstract: A pneumatic tire having high uniformity is provided by using a high-strength and high-modulus polyketone fiber cord to form a high-performance and high-quality cord fabric as a reinforcing cord in a carcass layer, a belt layer, or a belt protection layer and applying the cord fabric to the carcass layer, the belt layer, or the belt protection layer. A cord of the carcass layer contains at least 50% by mass polyketone fiber and has a maximum thermal shrinkage stress in the range of 0.1 to 1.8 cN/dtex. Weft cords within the tire substantially orthogonal to the carcass ply cord have a fineness in the range of 60 to 600 dtex, a tensile force in the range of 100 to 2000 g, and an elongation at break in the range of 3% to 30%. The distance between the weft cords substantially parallel to each other ranges from 5 to 50 mm.

Abstract: Disclosed is a pneumatic radial tire having improved high-speed durability and flat spot resistance in a well-balanced manner. Its carcass layer is constituted of a hybrid fiber cord obtained by imparting a first twist to a single nylon 46 fiber yarn and two aramid fiber yarns, and subsequently by twisting together the three fiber yarns while imparting a second twist to the three fiber yarns in a direction reverse to a direction of the first twist imparted to the three fiber yarns. In addition, a second twist coefficient K (expressed with T×D1/2) of this hybrid fiber cord is controlled in order to be 1700 to 2700.

Abstract: Disclosed is a pneumatic radial tire having improved flat spot resistance without sacrificing its high-speed durability, when a belt auxiliary reinforcement layer thereof is constituted of a hybrid fiber cord including a general-purpose nylon as a low-elastic fiber yarn. In the pneumatic radial tire, the belt auxiliary reinforcement layer is formed by winding an organic fiber cord around the outer periphery of belt layers in the tire circumferential direction. The organic fiber cord constituting the belt auxiliary reinforcement layer is obtained by twisting a highly-elastic fiber yarn with an elastic modulus of 10000 MPa or more and a low-elastic fiber yarn made of nylon 46.

Abstract: Provided is a pneumatic tire which is lighter in weight and exhibits increased flat-spot resistance while keeping its durability and driving stability. The pneumatic tire according to the present invention includes a carcass layer being laid between paired right and left bead sections, and at least two belt layers being arranged at an outer peripheral side of the carcass layer in a tread section. The pneumatic tire is characterized in that a hybrid cord, used as reinforcement cords of the carcass layer, is obtained by imparting second twists, in a reverse direction of the first twists, to a bundle of: at least one rayon first twist yarn being obtained by imparting first twists to a bundle of rayon fibers; and at least one aramid first twist yarn being obtained by imparting, to a bundle of aramid fibers, first twists in the same direction of the first twists of the rayon first twist yarn.

Abstract: There is provided a pneumatic radial tire having favorable steering stability required as a high performance radial tire designed for high performance cars, durability and good cost performance. The pneumatic radial tire is framed by a carcass 1 toroidally extending between a pair of bead portions 11 and has at least two layers of interlacing belt layers 2 (2a, 2b) formed by rubberizing steel cords and disposed around an outside of a crown portion thereof in a radial direction. The steel cord has a single strand structure or a core-single layer sheath structure composed of six to ten steel wires of 0.10 to 0.20 mm in diameter, a number of driven steel cords is 40 cords/50 mm or more and a distance between the adjacent steel cords within the belt layer is 0.3 mm or more.

Abstract: A heavy-duty pneumatic tire capable of sufficiently suppressing the amount of strain occurring in side edges of a belt layer is sufficiently suppressed, despite the required increase in width of the narrow belt layers on the inner layer side, so as to effectively prevent separation of the belt layer and, hence, separation of the belt. The tire includes two narrow belt layers (1B, 2B) on the inner layer side, and two wide belt layers (3B, 4B) on the outer layer side, which are larger in width than the narrow belt layers. The narrow belt layers and the wide belt layers are sequentially arranged on the outer circumferential side of a crown region of a radial carcass (5). The innermost narrow belt layer (1B) has side edges that are convex radially outwards.

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

Abstract: A tire for a motorized two-wheeled vehicle and more particularly a motorcycle. A tire such as this comprises at least one reinforcing structure of the carcass type, formed of reinforcing elements, anchored on each side of the tire into a bead the base of which is intended to be mounted on a rim seat, each bead extending radially outwards in the form of a sidewall, the sidewalls radially towards the outside meeting a tread, and comprising, under the tread, a crown reinforcing structure consisting of at least one layer of reinforcing elements, the said reinforcing elements making an angle of between 10 and 90° with respect to the circumferential direction. The reinforcing elements that make an angle of between 10 and 90° with respect to the circumferential direction are metal cords for which the curve of tensile stress as a function of relative elongation exhibits shallow gradients for small elongations and a substantially constant and steep gradient for greater elongations.

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

Abstract: The invention relates to a tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10° and 45° with the circumferential direction, at least one protective layer being radially to the outside of the working crown layers, said crown reinforcement being topped radially by a tread, said tread being joined to two beads by means of two sidewalls. According to the invention, the tire additionally comprises in each shoulder at least one layer of reinforcement elements which are oriented circumferentially and have an undulation, the axially inner end of said additional layer being radially adjacent and external to the radially outermost working layer and said axially inner end of the additional layer being radially adjacent and internal to at least part of the protective layer.

Abstract: There is provided a pneumatic tire capable of effectively preventing breakdown in the tread side portions by restraining the difference of the amount of radial expansion in the tread central portion and the tread side portions of the belt reinforcing layer.

Abstract: In a pneumatic safety tire comprising reinforcing rubber layers having an approximately crescent sectional shape for supporting a portion of the load which are disposed on the inner circumferential face of the carcass layer at side walls, a fiber cord constituting a belt reinforcing layer has a size of 1,000 to 7,000 dtex as the entire cord, comprises at least 50% by mass of a polyketone fiber and exhibits a maximum stress of thermal contraction of 0.1 to 1.8 cN/dtex. Buckling deformation of the tread portion can be suppressed, and the run flat performance is improved while the ride quality during driving under the normal internal pressure is not adversely affected and changes in the manufacturing process are not required.

Abstract: A compact metal cable having two layers (C1, C2) of construction 1+N, rubberized in situ, usable in particular as a reinforcing element for a tire belt for a heavy industrial vehicle, comprising a core or inner layer (C1) comprising a single core wire of diameter d1, and a saturated outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2 around the layer C1, said layered cable being characterized: in that it has the following characteristics (d1, d2, p2 in mm): 0.15<d1<0.50; 0.15<d2<0.50; 8<p2<25; and in that the core wire is surrounded by a sheath of diene rubber which fills, at least in part, the gaps between the core wire and the cords of the layer C2.

Abstract: Provided is a pneumatic radial tire including a main belt layer and at least one circumferential-direction reinforcement layer, which are provided in the tread portion. The main belt layer includes two belt layers in which steel cords are disposed in a manner that the steel cords of a first one of the two belt layers intersect the steel cords of a second one of the two belt layers. In the circumferential-direction reinforcement layer, steel cords are disposed in a substantial tire circumferential direction. The ratio Wo/Wm of the width Wo of the circumferential-direction reinforcement layer to the maximum width Wm of the main belt layer is 0.5 to 0.9. The ratio Ee/Ec of the reinforcement-cord elastic modulus Ee of the steel cords in the edge portions of the circumferential-direction reinforcement layer to the reinforcement-cord elastic modulus Ec of the steel cords in the center portion of the circumferential-direction reinforcement layer is not less than (0.85-0.5 Wo/Wm) and not more than 0.8.

Abstract: A radial tire for a motorcycle capable of having high road grip performance both when running at a high speed on a dry road surface and when cornering at a high s]peed, together with the high speed durability, especially a radial tire for a motorcycle with a large displacement to be used for road races, capable of maintaining these performances until the end of the races, is provided. The tilting angles of the cords 13a of said cross-belt 13 are set to 60 degrees or more to the circumferential direction, and a belt protecting layer 15 is disposed outside the spiral-belt 14, the belt protecting layer 15 having cords arranged in the direction tilted at 70 degrees or more to the circumferential direction.

Abstract: A pneumatic radial tire has a carcass structure, a belt structure, and a tread. The belt structure has at least two plies of reinforcing cords, the cords in the at least two plies being inclined at angles greater than 5° relative to the tire centerline. The cords in the belt plies are inclined at equal but opposite directions relative to the tire centerline. The belt plies have a stiffness variation in the circumferential and meridional directions of the belt plies wherein the stiffness variation is in the range of 12 to 25% between a radially outermost belt ply and a radially innermost belt ply.

Abstract: Provided is a pneumatic tire improved in a performance against the flat spot with a high-speed durability desirably maintained. The pneumatic tire of the present invention includes: a belt reinforcing layer which is disposed on an outer circumferential side of a belt layer buried in a tread portion, and which is composed of an organic fiber cord wound in a circumferential direction of the tire. At least 60% of the total count of the organic fiber cord composing the belt reinforcing layer is a polytetramethylene adipamide fiber cord. The creep set strain of the polytetramethylene adipamide fiber cord is 2.5% or less. The twist coefficient K of the polytetramethylene adipamide fiber cord satisfies a condition of 600?K?1700, and is represented by the following formula (1): K=T×?{square root over ( )}D ??(1) where T is the twist number (turn/10 cm) of the cord, and D is the total fineness (dtex) of the cord.

Abstract: A tire with a radial carcass reinforcement intended to equip a heavy vehicle such as a transport vehicle or construction machinery, the tire having an axial width grater than 37 inches. The tire includes a working crown reinforcement having at least two continuous plies formed from reinforcement elements crossed from one ply to the next, forming with the circumferential direction angles of between 10° and 35°. The working crown reinforcement is supplemented on each side of the circumferential mid-plane by at least three half-plies whose reinforcement elements form with the circumferential direction angles of between 10° and 40°. The half-ply extending axially the most towards the outside is in contact with at least two other working crown half-plies, and the three half-plies radially overlap the axially external ends of at least two continuous working crown plies.

Abstract: A tire (18) includes a pair of beads (24), a carcass (26), a belt (28), and a band (30). The carcass (26) includes a carcass ply (44) having a carcass cord. The carcass cord is constituted by a rayon fiber or an aramid fiber. The belt 28 includes belt plies (46) and (48) having belt cords. The belt cord is constituted by an aramid fiber. The belt cord has a fineness which is equal to or greater than 1400 dtex and is equal to or smaller than 1600 dtex. The belt cord has a density which is equal to or higher than 20 ends/5 cm and is equal to or lower than 30 ends/5 cm. The band (30) includes a band ply (50) having a band cord. The band cord is wound spirally in a substantially circumferential direction.

Abstract: A pneumatic tire comprises a carcass 1 comprised of one or more carcass plies toroidally extending between a pair of bead portions, a tread rubber 2 arranged at an outer peripheral side of a crown portion of the carcass 1, a belt 5 arranged between the tread rubber 2 and the carcass 1 and comprised of two belt layers 3, 4, cords 10 of which layers being crossed with each other and extending in an inclination angle of 45-80° with respect to a circumferential direction of the tire, and one or more circumferential strengthening layers 6, 7 arranged at an inner peripheral side of the belt 5 and containing wavy or zigzag cords 9 extended substantially in the circumferential direction of the tire, in which a width L of a belt layer 7 located at the inner peripheral side is made larger than a width M of the circumferential strengthening layer and a width N of a belt layer located at the outer peripheral side is made smaller than the width M of the circumferential strengthening layer.

Abstract: A rubber-covered belt ply forms a belt layer. At least a majority of metal wires in the ply exist as metal wire bundles in which a plurality of metal wires of circular cross-sections and substantially equal wire diameters are aligned in parallel without being twisted together, the metal wire bundles being aligned planarly and in parallel with intervals between the metal wire bundles in a transverse direction. At least one layer, which is a cap layer in which organic fibers are covered with rubber and/or a reinforcing layer which is formed of rubber or whose main component is rubber, is disposed between the belt layer and a tread.

Abstract: Providing a pneumatic tire for two-wheeled vehicle which is capable of enhancing the braking performance and the high-speed turning performance, while assuring the ride comfort. The carcass has a semi-radial construction, whereby the necessary and minimum rigidity is ensured with the ride comfort being assured. In the crown part of the semi-radial bias carcass 16, a belt layer 26, which is a crossed belt layer, is provided, and inside of the tread end parts, a radial reinforcement band layer 22 in which a plurality of reinforcement cords 24 extending in the radial direction are arranged is provided.

Abstract: There is provided a pneumatic radial tire for a motorcycle whose turning stability is improved by achieving both grounding performance and lateral rigidity at high level. A mono-spiral belt (MSB) (3) includes steel cords whose tensile break strength is 5.9 Pa or more. A value Tc of a number of driven cords in the MSB (per 25 mm in width) at an equator of the tire and a value Ts at shoulder parts thereof meet requirements of 17?Tc?24 and 0.6?Ts/Tc?0.9. A disposed width BW of the MSB meets a requirement of 0.6?BW/TW?1.0. At least one textile-reinforcing layer having tensile break strength of 5.9 Pa or more is disposed at both ends of the MSB while overlapping with the MSB. An overlap of the MSB with the textile-reinforcing layer is 4 to 10 times of the diameter D of the steel cords in the MSB.

Abstract: A pneumatic tire with a belt ply helically wound on a carcass ply. The crown reinforcing structure of the tire includes a single helically wound belt ply reinforced with high elongation steel cords. A preferred steel cord construction for the reinforcing steel cords is 4×7 (four strands each including seven filaments) with individual 0.26 mm diameter, High Tensile carbon steel filaments.

Abstract: An improved method for determining an initial flat spot magnitude on a tire that has been resting for a period of time on a substantially flat surface uses regression analysis. In accordance with the method, values of a tire flat spot magnitude for a particular type of tire are determined at a number of measurement intervals by a uniformity machine that spins the tire. An equation having at least two exponentially decaying terms is then determined that corresponds to the measured data points. Regression analysis is then used to determine an estimate for an initial flat spot magnitude. The method can be used to evaluate the effectiveness of different tire designs with respect to flat spot recovery rates.

Abstract: The invention relates to a tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of reinforcement elements, which are crossed from one layer to the other, forming with the circumferential direction angles of between 10° and 45°, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls and the crown reinforcement comprising between two working crown plies at least one additional ply of reinforcement elements. According to the invention, the axial ends of the reinforcement element working ply radially closest to the carcass reinforcement are turned up to cover the axial ends of a working crown ply radially external to the additional ply.

Abstract: The object is to provide a radial tire for a construction vehicle having an extended life-time by suppressing occurrence of separation failure at edges of respective belts without lowering cut resistance. A radial tire 10 is provided with a steel belt layer 14 at the tire radial outer side of a steel radial carcass 12. The steel belt layer 14 includes two reinforcement belts 18, two main cross belts 20, and two protective belts 22 in this order. The steel cords of the outermost side protective belt 22U constituting the tire radial outermost side of the protective belts 22 are arranged in a same direction of the steel cords constituting the widest cross belt. The belt width of the outermost side protective belt 22U is wider than the widest main cross belt 20L of the main cross belts 20, and is within a range of 75 to 90% of the tire width.

Abstract: A pneumatic tire having a carcass and a belt reinforcing structure wherein the belt reinforcing structure is a composite belt structure having at least one radially inner spiral layer and at least one zigzag belt reinforcing structure located radially outward of said spiral layer. The zigzag belt width is preferably narrower than the spiral layer.

Abstract: A tire noise reducing system comprises a pneumatic tire with a hollow, a wheel rim on which the tire is mounted so that said hollow forms a closed cavity, and a noise damper disposed in the closed cavity, wherein the noise damper is formed by fixing a strip of a porous material to the tire or wheel rim, the noise damper has a volume in a range of from 0.4 to 20% of the volume of the cavity, the noise damper has a sectional shape substantially constant in the tire circumferential direction, and the pneumatic tire comprises a tread portion provided with tread grooves defining a tread pattern having a sea ratio of 20 to 35%.

Abstract: A pneumatic tire for two-wheeled motor vehicles 1 comprises a belt layer 7 and a tread reinforcing layer 9 outside of a single carcass ply 6A made of organic fiber cords. The belt layer 7 is comprised of a belt ply 7A in which steel cords are spirally wound substantially parallel to a tire circumferential direction. The tread reinforcing layer 9 is comprised of a reinforcing ply 9A in which organic fiber cords are aligned to be substantially parallel to the tire circumferential direction. A width RW of the reinforcing ply 9A in a tire axial direction is not less than 30 mm and not more than 90% of a tread grounding width CW.

Abstract: At least one belt layer in which one or plural rubber-coated belt cords are arranged to be spirally wound almost in parallel with a tire circumferential direction on the outer circumference of a body ply. The belt cord is small in the increase rate of tensile load to stretch rate in the range of a predetermined stretch rate or less, but becomes large in the increase rate of the tensile load in another range exceeding the predetermined stretch rate. Therefore, during a vulcanizing and forming process, the belt cord is expanded together with unvulcanized compounded rubber under a small tensile load, and it does not occur to prevent body ply cords from being expanded, so that a green tire is vulcanized and formed with respective parts thereof being adhered as a result of being expanded to keep a correct shape.

Abstract: The subject matter herein is directed to a polymer-based cap ply reinforcement material that has a shrinkage component, wherein the reinforcement material is treated such that the shrinkage component increases at least about 10% over a reference shrinkage component of a reference polymer-based reinforcement material. The subject matter herein is further directed to a method of producing a product comprising a polymer-based cap ply reinforcement material, wherein the method includes: a) providing a reference polymer-based cap ply reinforcement material having a reference shrinkage component; b) providing a polymer-based cap ply reinforcement material having a shrinkage component; c) treating the polymer-based cap ply reinforcement material such that the shrinkage component increases at least about 10% over the reference shrinkage component of the reference polymer-based cap ply reinforcement material.

Abstract: A tire 2 has a belt 14 and a hard rubber layer 16. The belt 14 has a first ply 26, a second ply 28, a third ply 30 and a fourth ply 32. A width W3 of the third ply 30 is smaller than a width W1 of the first ply 26 and a width W2 of the second ply 28, and 75% of a width of a tread. Each of the plies 26, 28, 30, 32 has a steel cord. The first ply 26 and the second ply 28 construct a cross-ply structure. A cord of the third ply 30 is wound spirally. The third ply 30 has what is referred to as a jointless structure. The hard rubber layer 16 is positioned between the first ply 26 and the second ply 28, and outward of the third ply 30 in an axial direction. A complex elastic modulus of the hard rubber layer 16 is equal to or greater than 30 MPa.

Abstract: It is an object of the present invention to provide a hybrid dip cord consisting of rayon yarn and lyocell yarn to apply to the carcass ply or cap ply (belt reinforced layer) of pneumatic radial tire used in a car and a radial tire using the same. And also, according to the present invent the hybrid dip cord and the radial tire for application to the carcass ply or cap ply (belt reinforced layer) of pneumatic radial tire used in cars are produced by means of the following steps; imparting S direction twist of 20 to 200 TPM yarn number to one rayon yarn to produce a pre-yarn, imparting twist to said one rayon pre-yarn and one non-twisted lyocell respectively to produce a ply twist yarn, and imparting cable twist to two ply of ply twist yarn made from combination of said ply twist yarn or impart cable twist to a ply twist yarn to be produced by regulating low the twist number of one lyocell yarn and the rayon yarn to one lyocell as 20 to 200 TPM when the ply twist processes.

Abstract: A tire comprising a crown extended by two respective sidewalls and two respective beads, a carcass structure anchored in each side of the tire in said beads, said crown comprising at least one reinforcing ply having parallel reinforcements oriented at an angle ? relative to the circumferential direction ranging between 10 and 45 degrees, a first crown reinforcement having cords substantially oriented in the circumferential direction and being high elastic modulus at high stress organic fiber cords, and a second crown reinforcement having cords substantially oriented in the circumferential direction and having a ratio ? of the tensile strength at high strain and high temperature to the tensile strength at low strain and moderate temperatures inferior to 1.5.

Abstract: A pneumatic tire is provided which includes a carcass extending between bead portions, and a belt disposed radially outside the carcass in the tread portion. At least one of the carcass and belt includes a cord ply of a polyethylene-2,6-naphthalate fiber cord. The polyethylene-2,6-naphthalate fiber cord has a total denier number of from 2500 to 3600, a twist number of from 30 to 40 turns/10 cm, an initial stage modulus at 25 deg. C. in a range of from 50 to 65 gf/d, and a variation of the initial stage modulus at between 25 to 70 deg. C. which is not more than 20% in absolute value.

Abstract: Pneumatic tires for service on heavy vehicles having a belt package with widened belts. The tire includes a belt reinforcing structure or belt package having multiple cut belts of which one of the cut belts has a width approximately equal to the tire footprint. Widening two of the cut belts and forming at least one of the widened cut belts from a lighter material serves to improve tire durability in the regions of the tire crown and shoulder without increasing the overall tire weight.

Abstract: A tire includes a radial carcass reinforcement radially surmounted by a crown reinforcement composed of at least two working crown plies formed of metallic reinforcement elements crossed from one ply to the next and forming with the circumferential direction angles of between 10 and 35°. Also provided is at least one additional reinforcement, formed of at least two circumferentially oriented layers of metallic elements of a compacted diameter at most equal to 0.6 mm.

Abstract: Belt bandage for a vehicle pneumatic tire that includes a ply having strength carriers embedded in an unvulcanized rubber mixture. The strength carriers run essentially parallel to one another. Each strength carrier includes a hybrid cord that has a first twisted yarn having a high modulus of elasticity of at least approximately 25000 N/mm2 and a second twisted yarn having a low modulus of elasticity which is no greater than approximately 15000 N/mm2. The first and second twisted yarns are final-twisted together. A cord count E in cords per 5 cm ply widths, a force F1 at 2% elongation of each hybrid cord, and a force F2 at 6% elongation of each hybrid cord satisfies the following relationships: F1×E?approximately 600 N F2×E>approximately 1500 N. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: A tire intended to be fitted on a vehicle bearing a heavy load, such as a lorry, construction vehicle and/or aircraft, which tire comprises a carcass reinforcement radially surmounted by a crown reinforcement and a tread. The crown reinforcement is composed of at least two plies of metallic reinforcement elements, which are parallel to each other within the respective ply and are crossed from one ply to the next, forming angles of between 10 and 35° with the circumferential direction. Disposed in each shoulder is an additional ply of reinforcement elements which are parallel to each other in the ply and are oriented radially. The axially inner edges of the additional shoulder ply are radially adjacent to at least one edge of one of the plies of the crown reinforcement. The axially outer edge of the additional shoulder ply is radially lower than the edge of the ply to which the additional shoulder ply is adjacent.

Abstract: This invention is concerned with a radial tire, particularly a heavy duty radial tire aiming at the improvement of durability, and is characterized by rendering a ratio W2/W1 of width W1 of a belt layer located side a carcass to width W2 of the remaining belt layer in small slant belt layers arranged at a width corresponding to 0.25–0.50 times a tread width in a widthwise direction of the tire, whereby growth and progress of cracks in the vicinity of cord ends of cords used in the belt resulting in separation failure at widthwise ends of the belt are effectively prevented to overcome a weak point in the tread reinforcement of the radial tire.

Abstract: Disclosed is a tire having at least one reinforcing ply in the carcass, belt, or bead region of the tire. The reinforcing ply is comprised of a blended fiber cord. The cords, in combination with a preferred cure temperature adhesive, achieve a high degree of thermal stability allowing for the use of such cords in various reinforcing plies for a pneumatic tire and for preferred use for such cords in areas of the tire subject to high temperatures either in curing or performance.

Abstract: A band (14) of a tire covers a belt (12). The band (14) is formed by a band ply (36). The band ply (36) includes a side portion (38) and a center portion (40). A band cord having a high modulus (Ms) is used for the side portion (38). Typically, a band cord to be a composite of a nylon fiber and an aramid fiber is used for the side portion (38). A band cord having a low modulus (Mc) is used for the center portion (40). Typically, a nylon fiber is used for the band cord of the center portion (40). A ratio (Ms/Mc) is 2.0 to 4.0. A ratio of a width (Ws) of the side portion (38) to a width (Wb) of the band (14) is 5.0% to 20.0%.

Abstract: A pneumatic tire containing a belt disposed radially outside a carcass in a tread portion, the belt including two cross plies of monofilament metallic cords laid at angles of from 15 to 30 degrees with respect to the circumferential direction of the tire, each monofilament cord composed of a waved single filament, the filament having a circular sectional shape having a diameter in the range of from 0.40 to 0.50 mm, or alternatively a non-circular sectional shape having an aspect ratio in the range of from 0.65 to 0.95 and a cross-sectional area in the range of 0.09 to 0.20 sq.mm.

Abstract: A tire, in particular an elastomeric pneumatic tire, reinforced by lengths of a monofilament elongate composite element of long glass fibers impregnated in a thermoset resin having a glass transition temperature Tg greater than 130° C., in which the fibers are all parallel to each other, the elongate composite element having, under a bending stress an elastic deformation in compression of at least 2%, in flexion a breaking stress in compression greater than the breaking stress in extension.

Abstract: A tire comprising a crown, two sidewalls and two beads, a casing reinforcement anchored in each of the beads and a crown reinforcement, the crown reinforcement comprising radially, from the inside outwards, a working block and a protective block having at least one ply of circumferentially oriented parallel reinforcing threads, characterized in that the protective block ply consists of aromatic polyamide reinforcing threads with an initial modulus of less than 1000 cN/tex and a tenacity of greater than 65 cN/tex.

Abstract: A rubberized fabric for a tire belt includes an elastomeric material and at least one reinforcing metal strap in the elastomeric material. The at least one reinforcing metal strap is made of a shape-memory material. The at least one reinforcing metal strap is oriented at about 0° to an equatorial plane of the tire. The at least one reinforcing metal strap has a width of no less than about 1 mm. The at least one reinforcing metal strap has a first thickness of no greater than about 0.1 mm. The at least one reinforcing metal strap may have coils disposed side-by-side and axially displaced from one another.

Abstract: The present invention relates to, and more particularily, to a lyocell dip cord and tire produced by a method comprising the steps of: (A) dissolving 0.01 to 3 wt % of cellulose powder in portions in concentrated liquid N-methylmorpholine N-oxide (NMMO) to prepare cellulose-containing NMMO solution; (B) feeding the NMMO solution and cellulose powder into an extruder having a screw to be subjected to dispersing, mixing, shearing, kneading, melting and measuring ability in the extruder to prepare a swollen and homogenized cellulose solution; (C) spinning the cellulose solution through a spinning nozzle, passing the spinning solution through an air gap to a coagulation bath and coagulating the spinning solution to obtain a multifilament; (D) subject the multifilament to water-wash, drying and oil-treatment, followed by winding; and (E) twisting the wound yarn with a twisting machine to prepare a greige cord, weaving the greige cord and dipping the woven cord in a dipping solution.

Abstract: A multi-layer cable having an unsaturated outer layer, usable as a reinforcing element for a crown reinforcement of a tire, comprising a core of diameter d0 surrounded by an intermediate layer (C1) of six or seven wires (N=6 or 7) of diameter d1 wound together in a helix at a pitch p1, this layer C1 itself being surrounded by an outer layer (C2) of P wires of diameter d2 wound together in a helix at a pitch p2, P being less by 1 to 3 than the maximum number Pmax of wires which can be wound in one layer about the layer C1, this cable having the following characteristics (d0, d1, d2, p1 and p2 in mm): (i) 0.28?d0<0.50; (ii) 0.25?d1<0.40; (iii) 0.25?d2<0.40; (iv) for N=6: l.10<(d0/d1)<1.40; for N=7: 1.40<(d0/d1)<1.70; (v) 5.3?(d0+d1)<p1<p2<4.7?(d0+2d1+d2); and (vi) the wires of layers C1 and C2 are wound in the same direction of twist.