Abstract: The invention relates to a tire with radial carcass reinforcement, intended for equipping a heavy vehicle such as a transport vehicle or construction machinery. It refers in particular to a tire having an axial width greater than 37 inches. The tire according to the invention has a working crown reinforcement, composed of at least two continuous working plies and completed on each side of the circumferential center plane by at least two half-plies whereof the metal reinforcing elements form angles greater than the smallest of the angles of the reinforcing elements of the continuous plies with the circumferential direction, with that half-ply extending axially furthest outwards being in contact with the axially widest continuous working crown ply, and the two half-plies radially covering the axially outer end of the said axially widest working ply.

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: A high-transverse-curvature tire (1), in particular to be mounted on the front wheel of a motor-vehicle, which includes a belt structure (6) including, in a radially external layer (9a), a plurality of circumferential coils (7a), axially arranged side by side, of a cord (7) wound at a substantially zero angle with respect to the equatorial plane (X—X) of the tire. An area occupied by rubber blocks (10) formed in a portion of the tread band (8), having a length equal to the pitch (p) of the tread pattern and a width equal to the axial development of the tread band (8), is between 70% and 90% of the total area of the portion.

Abstract: Tire for heavy off-the-road vehicles comprising a radial carcass reinforcement (1) anchored in each bead to an annular bead reinforcement element (2), and radially above it a crown reinforcement (3) consisting of at least two working crown plies (320, 321) of inextensible metallic cables crossed from one ply (320) to the next (321), the said plies having widths at least equal to 50% of the width L of the tread (4) and, radially above these, two protection crown plies (330, 331) of so-termed elastic metallic cables crossed from one ply (330) to the next (331), the tread (4) comprising in its ungrooved portion of thickness D at least one armature (34) of reinforcement elements, wherein the said armature (34) is composed of at least two layers (340, 341) of textile monofilaments parallel to one another in each layer, the axial widths of the said two layers (340, 341) being at least equal to the width of the narrower working ply (321).

Abstract: Reinforcement ply N for a tire, formed of reinforcement elements embedded in coating products, characterized in that it comprises a first C1 and a second C2 layer of metallic elements E1, E2 parallel to one another, embedded in a coating product or coating products M1, M2 and, between the said two layers C1 and C2, a third layer C3 of elements E3 made from a textile material and embedded in a coating product M3, the said textile elements E3 being orientated relative to the elements E1 and E2 at an angle between 70° and 110°.

Abstract: Inside a tread portion and outside a belt layer along the radius direction thereof is formed a belt layer comprising a band ply formed by winding spirally a tape- and belt-form ply wherein one ore plural band cords are stretched and arranged to be embedded in a topping rubber. In this band ply, the elongation resistance value K (unit: N° cord number/cm) specified by the following equation is set within the range of 99 to 700 when the sectional area of the band cord or each of the band cords is represented by S (unit: mm2), the modulus thereof when the elongation thereof is 2% is represented by M (unit: N/mm2), the band cord arrangement density per cm of the band ply is represented by D (unit: cord number/cm).

Abstract: In a pneumatic radial tire comprising a belt of at least two belt layers, in which the belt comprises a maximum-width belt layer containing many cords slantly arranged with respect to an equatorial plane of the tire and a narrow-width belt layer arranged at the outside of the maximum-width belt layer in the radial direction and containing many cords arranged in an oppositely inclined direction to the cords of the maximum-width belt layer, the belt end separation is controlled by arranging a reinforcing layer containing many cords arranged in an oppositely inclined direction to the cords of the maximum-width belt layer so as to overlap with an outer end portion of the maximum-width belt layer located outward from an outer end. of the narrow-width belt layer in the widthwise direction thereof.

Abstract: A pneumatic radial tire comprises a radial carcass, a cross belt comprised of at least two belt layers, a belt reinforcing member arranged adjacent to the belt and comprised of at least one belt reinforcing layer containing a reinforcing element embedded therein and extending in a circumferential direction while bending in form of wave or zigzag, and a tread rubber, in which the widthwise outer end of the belt reinforcing member is located outward from the widthwise outer end of the widest-width belt layer, or a belt protection member is disposed in the neighborhood of the belt so that the widthwise outer end of the belt protection member is located outward from the widthwise outer end of the belt reinforcing member in a widthwise direction of the tire.

Abstract: Load Range C or D radial light truck tires have plies reinforced with metallic cords. At least one of the plies has an inch strength of at least 11,500 N/mm2 per in. and is reinforced with 0.32 mm-0.40 mm filament diameter ultra tensile steel cords at 17-24 ends per inch. The ply may be located in any of the tire components such as the belt, carcass, chipper, or chafer.

Abstract: A pneumatic tire (10) incorporates a plurality of parallel-aligned, tread-stiffening support members (23) typically disposed laterally between the tread (12) and the ply structure (16). The support members (23) inhibit lateral and circumferential tread lift during runflat operation. Support members (23) can each be a monolithic rib (22) made of a fiber reinforced plastic material. An alternative layered rib (24) has two outer layers (40, 44) of a fiber reinforced plastic material while the central layer (42) is an elastomer.

Abstract: A method for manufacturing a reinforcing structure for tyres of vehicles includes the steps of preparing a plurality of strip segments having substantially parallel, longitudinal filiform elements at least partially coated by at least one layer of elastomeric material, and applying the plurality of strip segments along a circumference of a toroidal support, to form at least one continuous reinforcing layer about a geometric axis of rotation of the toroidal support. During the applying step, a relative angular rotation, between at least one of the plurality of strip segments and the toroidal support, occurs about an axis of correction substantially radial to the geometric axis of rotation. A related apparatus for manufacturing a reinforcing structure for tyres of vehicles is also disclosed.

Abstract: The present invention provides a rubber-based product usable as a tire cover which is composed of a buffer zone and a zone sensitive to oxidation (sensitive zone), the buffer zone being capable of trapping oxygen external to the product so as to protect from oxidation at least one sensitive zone of the product. The buffer zone contains a basic composition composed of at least one elastomer containing at least one salt of iron (III) provided to activate oxidation in the composition. Preferably, the salt is an iron (III) salt of a carboxylic acid having the general formula CnH2nO2 in which n is from 2 to 5. This product is produced by mechanically incorporating the iron (III) salt into the elastomer or elastomers contained in the composition for the buffer zone. The invention is advantageously applied in a tire cover, and imparts improved rolling resistance.

Abstract: A pneumatic tire comprises a tread reinforcing belt made of metallic cords, each of the metallic cords is made up of six to twelve metallic filaments whose diameter is not less than 0.15 mm but less than 0.25 mm, the six to twelve metallic filaments are grouped into a plurality of bunches each including two to four filaments, the filaments of each bunch are twisted together at a first twisting pitch, the bunches are twisted together into the cord at a final twist pitch Pc of from 10 to 40 mm, the first twisting pitch is more than the final twist pitch, and the bunches each include at least one waved filament which is two-dimensionally waved at wave pitches Pw in a range of from 5 to 30 times the diameter (d) of the filament and a wave height (h) in a range of from 0.2 to 3.0 times the diameter (d).

Abstract: In a pneumatic tire comprising a carcass, a belt arranged at the outside of the carcass in a radial direction and comprised of at least two belt layers, at least one belt reinforcing layer arranged so as to overlap with the belt and extend over a widthwise outer end thereof, and a tread rubber arranged at the outside of the belt in the radial direction, a pair of split auxiliary belt layers are arranged so as to overlap at least with both widthwise outer end portions of a widest-width belt reinforcing layer and reinforcing elements having an inclination angle different from that of reinforcing elements in the belt reinforcing layer are embedded in the split auxiliary belt layer for decreasing the wearing rate at the tread end portion of the tire to effectively control irregular wear.

Abstract: A pneumatic tire comprises a tread portion provided with shoulder blocks in a row along each tread edge, the shoulder blocks in a row divided by a circumferential groove and first shoulder grooves and second shoulder grooves, the first and second shoulder grooves alternating in the tire circumferential direction and each extending from the circumferential groove to the tread edge, wherein a circumferential width (WLo) of the first shoulder groove at the tread edge is larger than a circumferential width (WSo) of the second shoulder groove at the tread edge, and the ratio (WLo/WSo) of the circumferential width (WLo) to the circumferential width (WSo) is larger than a ratio (WLi/WSi) of a circumferential width (WLi) of the first shoulder groove to a circumferential width (WSi) of the second shoulder groove, each measured at the circumferential groove.

Abstract: A pneumatic tire for heavy duty use applications, having at least one sidewall of formed an increased thickness, for providing better tire sidewall wear and increased re-use of the tire's internal carcass, the tire's enhanced thickness sidewall having a relief area formed by at least one radius relief portion adjacent that sidewall's bead to prevent the associated rim flange edge from cutting into the enhanced thickened sidewall, and a sharp angled return sidewall portion adjacent the portion tread sidewall. The increased thickened sidewall, ranging between approximately 2.0 and 3.5 inches, provides maximum thickness in the area of maximum sidewall flexing during use.

Abstract: A method for designing tires for reduced cavity noise is directed to tires of the type having architectural elements comprising at least one carcass structure anchored in each side of the tire in a bead, each bead having a base which is intended to be mounted on the tire's design mounting rim, a side wall portion extending radially upward from each bead, a reinforced summit comprising reinforcement cords disposed at a given angle, and the side wall portions joining the summit. The method includes the step of arranging the architectural elements to provide a flexibility level of at least a portion of the summit to allow said portion to vibrate at a frequency substantially corresponding to the cavity mode.

Abstract: A vehicle tire is described having at least one carcass ply extending between bead regions, a tread region (1) and a belt arrangement (3) disposed between the carcass and the tread as well as a tread profile provided in the tread region having at least one overwide circumferential groove (2) disposed in particular away from the middle and on the inner side of the tire, with the tire region disposed beneath the overwide circumferential groove, which has in particular a width of more than 30 mm, being formed with additional localised reinforcement in the axial direction.

Abstract: In a pneumatic radial tire comprising a belt of at least two belt layers, in which the belt comprises a maximum-width belt layer containing many cords slantly arranged with respect to an equatorial plane of the tire and a narrow-width belt layer arranged at the outside of the maximum-width belt layer in the radial direction and containing many cords arranged in an oppositely inclined direction to the cords of the maximum-width belt layer, the belt end separation is controlled by arranging a reinforcing layer containing many cords arranged in an oppositely inclined direction to the cords of the maximum-width belt layer so as to overlap with an outer end portion of the maximum-width belt layer located outward from an outer end of the narrow-width belt layer in the widthwise direction thereof.

Abstract: A hybrid steel cord and method of making such cord which includes, in contact with one or more carbon steel wire(s), at least one stainless steel wire whose microstructure contains less than 20% of martensite (% by volume). Articles made of plastic and/or rubber, in particular tire envelopes or the carcass reinforcement plies of such envelopes embodying such cords.

Abstract: A tire with radial carcass reinforcement, having a crown reinforcement which includes at least two working crown plies made of inextensible cables, crossed from one ply to the other, and an additional ply, axially continuous and formed of undulating metallic elements orientated essentially parallel to the circumferential direction and positioned between the working plies.

Abstract: A tire having a crown, two sidewalls and two tire beads, a carcass reinforcement anchored in the two tire beads and a belt reinforcement, said belt reinforcement including at least two superposed reinforcement plies formed with cords parallel in each ply and criss-crossed from one ply to the other forming with the circumferential direction angles (&agr;, &bgr;) ranging between 10° and 55° and characterized in that the cords of at least one of the two reinforcing plies are successively in contact, on the same side of said ply, moving from the tire equatorial plane towards one of the reinforcing ply lateral ends with a rubber bonding layer having a first modulus of elasticity and then a rubber bonding layer of a second modulus of elasticity lower than the first.

Abstract: A medium truck tire (10) and more specifically a super single truck tire (10) includes belt plies (24, 25) reinforced with steel cords which make an angle comprised between 0° and 5° with respect to the equatorial plane. At least one belt ply (24, 25) is helically wound on the carcass ply (16). The steel of the reinforcing cords comprises high elongation steel. Radially outside to the at least one helically wound belt ply (24, 25), there are several spliced belt plies (22, 23), making angles comprised between 45° and 75° with respect to the equatorial plane.

Abstract: A pneumatic tire comprises the following belt (A) or belt (B). The belt (A) comprises a ply made of waved monofilament steel cords and a ply made of multi-filament steel cords, wherein the waved monofilament steel cord is (1) spirally waved so that the wave pitches PA are in a range of from 14 to 50 mm and the amplitude HA of each wave is in a range of from 0.002 to 0.02 times the pitch PA of the wave, or (2) two-dimensionally waved so that the wave pitches PB are in a range of from 5 to 50 mm, and the amplitude HB of each wave is in a range of from 0.002 to 0.05 times the pitch PB of the wave. The belt (B) comprises two plies made of waved monofilament steel cords, wherein the waved monofilament steel cord is waved so that the wave pitches P are in a range of from 0.008 to 0.08 times the circumference of the tire and the wave height of each wave is in a range of from 0.002 to 0.025 times the pitch P of the wave.

Abstract: A chip resistant pneumatic tire (10) is provided. The tire has an original reinforced rubber sheet (22, 22b) embedded in or under its tread (18) and/or sidewall (20 ), and is used in off the road applications such as mining. Low sulfur rubber (17) is used to coat the organic reinforcement (11), and its shown that such rubber (17) is more compatible with rubber used to form the tread (18) or sidewall (20), which together with the organic reinforcement (11), helps prevent chipping and chunking in the tread (18) and sidewall (20). The illustrated organic filaments of cords (11) have a round cross section and are at least 2000 denier (2200 dTex) and have a tenacity of at least 3.5 g/denier (31 cN/Tex), an initial modulus of at least 20 g/denier (177 cN/Tex), an elongation at break of at least 10%, and a shrinkage of at most 10%.

Abstract: A radial ply tire (10) has a floating reinforcement ply on the inside shoulder/sidewall region of the tire. The reinforcement ply comprises ply rubber having a gauge sufficient to delocalize flexing in the tire shoulder/sidewall region, and in one embodiment may be reinforced with 0.50 to 6.0 phr fibers. Depending on the type of tire in which the reinforcement ply is used, the reinforcement has a total gauge of 0.005 inch to 0.175 inch (0.127 to 4.445 mm). When fiber is used in the illustrated embodiment, the fiber is oriented circumferentially in the tire.

Abstract: A radial motorcycle tire comprises a tread portion with a pair of tread edges, a pair of sidewall portions, a pair of bead portions each with a bead core therein, and a band disposed in the tread portion and composed of windings of at least one cord wound at an angle of not more than 5 degrees with respect to the tire equator. The tread portion is provided radially inside the band with at least two layers of cords comprising a radially outermost first layer and a radially inner second layer next to the first layer, wherein with respect to the tire equator, the cords of the first layer are inclined to a direction at an angle of from 65 to 90 degrees, and the cords of the second layer are inclined to the same direction as the first layer at an angle of from 65 to 90 degrees.

Abstract: A tire having a crown which includes a ply of circumferentially oriented, helically wound reinforcing threads. This ply is arranged such that in sensitive zones, for example, beneath the grooves of the tread pattern, the laying pitch of the circumferential reinforcing threads is greatly increased. This substantially reduces the risks of damage to the circumferential reinforcing threads in these zones.

Abstract: In a heavy duty radial tire, a reinforcement belt 8 outward in a radial direction of the tire and a high-strength belt 13 inward in the radial direction are arranged between a radial carcass 2 and a tread rubber 4, and an intersect angle between cord 6a of an innermost wide-width slant cord layer 6 in the reinforcement belt 8 and cord 12a of an outermost narrow-width slant cord layer 12 in the high-strength belt 13 is not less than 10° at an acute angle side, and narrow-width slant cord layers 11, 12 of the high-strength belt 13 in the tire mounted onto a rim and inflated under a maximum air pressure have a width corresponding to 20˜60% of a ground contact width of the tread rubber 4, and inclination angles of cords 11a, 12a with respect to an equatorial plane 5 of the tire are not more than 15°, and a rubber gauge t1 of a first rubber layer 14 between cord 6a of an innermost wide-width slant cord layer 6 and cord 12a of an outermost narrow-width slant cord layer 12 is 0.9˜3.

Abstract: A tire having a crown reinforcement formed of at least two working crown plies (32, 34) having axial widths L32, L34 greater than the width L33 of an additional reinforcement (33) of inextensible, substantially radial reinforcement elements, which reinforcement is arranged radially between said plies (32, 34) and is axially composed of three parts, a central part (33′) in the form of a ply formed of inextensible, substantially radial reinforcement elements and two lateral parts in the form of strips (33″), each formed of circumferential reinforcement elements, the modulus of elasticity upon traction per unit of width of a lateral strip being at most equal to the modulus of elasticity upon traction, measured under the same conditions, of the most extensible working ply.

Abstract: A motorcycle tire including a highly convex tread joined by two sidewalls of low height to two beads, each bead being reinforced by an inextensible annular element around which is anchored a carcass reinforcement formed of textile reinforcement elements forming with the circumferential direction an angle of between 70° and 90°, the carcass reinforcement being radially surmounted by a crown reinforcement formed of at least one ply of circumferential reinforcement elements, located radially between the carcass reinforcement and the radially outermost ply of the crown reinforcement, and of two plies of elements of textile material, which are crossed from one ply to the next and forming with the circumferential direction angles of between 65° and 85°.

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 radial medium radial truck (RMT) tire has belt or breaker plies which are reinforced by organic reinforcement cords or filaments. In the preferred embodiment, organic multifilaments are used in the top belt or breaker plies which have the following characteristics: at least a gauge of 420×2 dTex to about 3300×3 dTex, a tenacity of about 35 cN/Tex to about 200 cN/Tex, an initial modulus of at least 30 g/denier (250 cN/Tex) and a shrinkage of about 0.1-10 %. When an organic polymer reinforcement is used in the top belt or breaker in the belt package of a tire, scrapping of tires during a retreading operation because of corrosion is greatly reduced. In addition, acceptance for retreadability is increased because of reduced top belt or breaker damage, allowing for easier preparation for the retreading. Moreover, the invention relates to an improved construction to reduce defects known as blows.

Abstract: The present invention is a crown-stiffening underlay structure comprised of a flat strip of elastomeric material reinforced with essentially inextensible cords. The cord-reinforced flat strip is wrapped helically around the green tire carcass prior to blowup into the characteristic toroidal shape of a tire carcass. In one embodiment, the underlay structure is disposed between breakers and the radial ply structure. In another embodiment, the underlay is disposed between the radial ply structure and the innerliner. In another embodiment, the afore described underlay structure has an additional and structurally contiguous beam made of elastomeric material.

Abstract: An aircraft tire, having a radial carcass reinforcement surmounted radially to the outside by a crown reinforcement and a tread, said crown reinforcement including: a) at least one ply of reinforcement elements of high modulus oriented circumferentially, b) two plies having ends free of reinforcement elements of high modulus, which are parallel to each other within each ply and are crossed from one ply to the next, forming with the circumferential direction an angle &agr;, of between 5° and 35°, and c) radially to the outside, an assembly of at least two layers of textile elements of low modulus which are oriented relative to the circumferential direction at an angle &bgr;, of between 0° and 35°, said two layers being obtained by winding in a zigzag a strip, formed of at least one coated cable, and the assembly of the layers having an axial width greater than the width of the tread, whereas the widths of the textile plies of high modulus are less than said width of the tread.

Abstract: A tire for heavy equipment, having at least one radial carcass reinforcement surmounted radially to the outside by a crown reinforcement formed of at least three so-called working plies formed of inextensible metal cables, crossed from one ply to the next, forming angles of between 15° and 35° with the circumferential direction. At least one half-ply, formed of inextensible metal cables and of width L′, on either side of the equatorial plane XX′, is arranged between the edges of at least two radially adjacent working plies, the cables of said half-ply forming with the circumferential direction an angle, which is firstly greater in absolute value than 25°, and secondly is greater in absolute value than the largest angle formed by the elements of the two working plies by an amount between 5° and 15°.

Abstract: A laminate contains a composite, comprising a high melting point thermoplastic such as polyphenylene or epoxy and high modulus fibers such as carbon or graphite, which is encapsulated with a resin. A primer adheres the encapsulated composite to a rubber material such as a tire tread. Alternatively, an undertread layer adheres the tire tread to the primed encapsulated composite. The laminate can be used as a run flat belt in a tire.

Abstract: A tire having a preferential fitting direction to a passenger car, the tire having a carcass reinforcement that extends from one tire bead to the other and, radially outside, a crown reinforcement of width Ls, formed by at least two crown plies, and in addition a meridian reinforcing ply arranged radially between the carcass reinforcement and the crown reinforcement, the meridian reinforcing ply having a width Lr between 15% and 45% Ls of the crown reinforcement, one edge of the reinforcing ply being located a distance D1 from the equatorial plane of the tire between 35% and 50% of Ls, while the other edge is located between the first edge and the equatorial plane of the tire. A method of mounting a group of four such tires on a vehicle.

Abstract: A tire includes a radial carcass reinforcement surmounted by a crown reinforcement formed of at least one working reinforcement having two plies of inextensible metallic reinforcement elements, parallel to each other within each ply and crossed from one ply to the next and forming with the circumferential direction angles &agr;1 and &agr;2 between 10° and 45,° and at least one protective ply. The axial widths L1 and L2 of the working plies and the axial width L3 of the at least one protective ply are such that L3<L2<L1. On either side of the equatorial plane XX′ of the tire is at least one additional ply of inextensible metallic reinforcement elements located in the plane of the protective ply and oriented in the same direction as the elements of the least wide working ply, which forms with the circumferential direction an angle &agr;4 greater in absolute value than the angle &agr;2 of the elements of the radially outer working ply by at least 5°.

Abstract: In a high-transverse-curvature tire (1), in particular to be mounted on the front wheel of a motor-vehicle, comprising a belt structure (6) including, in a radially external layer (9a), a plurality of circumferential coils (7a), axially arranged side by side, of a cord (7) wound at a substantially zero angle with respect to the equatorial plane (X-X) of the tire, the area occupied by rubber blocks (10) formed in a portion of the tread band (8) having a length equal to the pitch (p) of the tread pattern and a width equal to the axial development of the tread band (8), is between 70% and 90% of the total area of said portion. Such a tire (1) advantageously couples a substantial reduction in the shimmy effect with a good wet grip and a reduction in both the braking distance and aquaplaning phenomena on wet road.

Abstract: A pneunatic radial ply tire (500, 600, 900, 1000, 1100, 1200, 1300, 1400) having a tread (538, 638, 938, 1038, 1138, 1238, 1338, 1438), a carcass structure (560, 660, 960, 1060, 1160, 1260, 1360, 1460) and a belt structure (546, 646, 946, 1046, 1146, 1246, 1346, 1446) has an electrically conductive and electrically continuous single-turn hoop (510, 610, 910, 1010, 1110, 1410) disposed about the circumference of the tire. The hoop might be provided as a coupling element in a transponder and interrogator system and in some designs as a structural element of the tire.

Abstract: A pneumatic radial tire, wherein five main grooves extending in the circumferential direction of a tire are provided on a tread to divide into and form land portions of six rows, each land portion is divided into block rows constituted by a plurality of blocks by means of a plurality of subgrooves extending in the direction of width of the tire, and an area ratio of the blocks is set at a relationship of 1:0.9 to 1.1:1.8 to 2.2 from the block row of the shoulder side to the block row of the center side, in a region between ends of a belt layer having a maximum width embedded in said tread.

Abstract: A pneumatic radial tire comprises a radial carcass of at least one rubberized cord ply, a belt comprised of three rubberized cord layers, an innermost cord layer and a middle cord layer among these cord layers being a cross cord layer that cords of the layers are crossed with each other with respect to an equatorial plane of the tire, and one or more circumferential grooves provided in at least each side region of the tread portion, wherein the cords of each of the innermost cord layer and the middle cord layer have an inclination angle of 10-25° with respect to an equatorial plane of the tire, and cords of an outermost cord layer have an inclination angle of 45-115° with respect to the equatorial plane and the outermost cord layer has a width extending toward an end of the tread portion over an outermost groove edge of an outermost circumferential groove in a widthwise direction of the tread portion.

Abstract: A pneumatic tire comprises a carcass comprised of one or more carcass plies and a belt disposed on an outer periphery side of a crown portion of the carcass and comprised of one or more belt layers, wherein each of at least one carcass ply and at least one belt layer is constituted with organic fiber cords having a modulus of elasticity within a specified range.

Abstract: The invention relates to a bracing ply comprising reinforcing elements, which are made of steel cords, for a vehicle pneumatic tire, in particular, for a pneumatic tire used on transporters or light trucks and reinforced pneumatic tires. Said bracing ply is provided with two steel cord plies (bracing plies) which are stacked in a radial direction, whereby the radially inner steel cord ply is wider in the axial direction of the tire than the radially outer steel cord ply. In addition, the individual steel cords of a ply run diagonally with a slope ranging from 18° to 25° with regard to the zenithal plane of the tire. The radially inner and the radially outer steel cord plies have opposed slopes, are comprised of individual filaments with a filament diameter of 0.32 mm, and are provided with a U+T structure (untwisted+twisted), whereby the radial distance between steel cord plies is smaller in the zenithal plane of the tire than in the shoulder areas.

Abstract: A two-piece tire assembly has a removable tread belt 12 for installing about the circumference of a tire carcass 14. The tread belt has a pair of lateral ends each axially extending beyond the inflated unloaded carcass 14 at the circumferential surface by a distance of at least 4% of the width as measured at the tread belt 12 and carcass 14 interface. The carcass 14 has an abrasion resistant rubber layer 82 at the tread belt interface. The tread belt 12 also has the abrasion resistance tread compound 82 at the carcass 14 interface.

Abstract: A pneumatic radial ply tire (50) having a tread (52), a carcass (60) with two sidewalls (77, 78), two or more radial plies (70, 72), two annular beads (36a′, 36b′), a belt structure (56) located radially between the tread and the radial ply structure (58), one or more circumferentially deployed high-modulus incompressible belt reinforcements (66) and/or two or more circumferentially deployed high-modulus tensile-stress-bearing fabric reinforcements (59). Belt reinforcement(s) (66) and/or fabric reinforcement(s) (59) work to increase the lateral and circumferential rigidity of the tread (52) and underlying structures of the carcass (60). The lateral and circumferential stiffening of the tread (52) enhances high-speed runflat handling and contributes to improved runflat operational life.

Abstract: A pneumatic tire with a folded belt structure comprises a cut belt and an overlay encompassed by folded over edges of the folded belt. Low aspect ratio tires for high performance automobiles having this structure can be made using a variety of materials.

Abstract: A tire whose crown has a ply of bimodulus reinforcements circumferentially oriented and spiral-wound, the ply being so arranged that, in the new tire, its reinforcements have a high-temperature contraction potential identical to that of the adhesive yarn before it is introduction in the tire. The tire has an appreciably diminished running noise.

Abstract: As the present invention there is disclosed a pneumatic radial tire comprising a carcass having a smaller tensile rigidity than that of conventional pneumatic radial tires by application of a steel cord having a smaller Young's modulus to the carcass or by application of a smaller amount of a high strength steel cord formed with carcass filaments having a greater tensile strength to the carcass while maintaining the necessary strength of the carcass. In accordance with the present invention, extension of the carcass increases and extension of a belt in the circumferential direction of the tire is suppressed when the tire is inflated by an inner pressure. As a result, compression stress working on the carcass when a vehicle turns decreases and buckling deformation of the steel cord can be prevented. Accordingly, durability is improved.