Abstract: The present invention relates to a textile cord comprising at least two yarns, each yarn comprising multiple filaments, wherein each filament comprises polyethylene furanoate reinforced by carbon nano material and/or boron nitride nano material. These textile cords are particularly useful as tire reinforcements. Moreover, the present invention is directed to a polymeric composition comprising (1) polyethylene-2,5-furan dicarboxylate and (2) a carbon nano material or a boron nitride nano material. This polymeric composition can optionally be further comprised of one or more additional polyesters, such as polyethylene terephthalate or polyethylene naphthalate. This invention is further directed to a rubber component comprising said cords coated with rubber and to tires and other rubber products comprising such cords.

Abstract: A heavy truck tire is provided that includes a tread and a casing. The casing has a bead with a bead core having padding gum and a rod with a perimeter. A contention armature surrounds the bead core and has an overlap, a majority of which is located outward in the radial direction from the rod. The padding gum is arranged in relation to the rod such that an outer area, inner area, and an axially outer area of the padding gum have areas that are greater than or equal to 20% of the area of the perimeter of the rod. An axially inner area of the padding gum is greater than or equal to 10% of the area of the perimeter of the rod.

Abstract: A pneumatic tire includes a pair of bead portions that are arranged at intervals wider than a regular rim width in a non-rim-assembled state. The bead portion includes a rim protector, a bead base, a bead heel, and a bead back surface. In the non-rim-assembled state, the bead back surface is formed with a recess that is recessed inward in the tire width direction. The bead back surface has a second curved portion constituting a deepest portion of the recess and a third curved portion extending inward in the tire width direction from the rim protector. When a height of the deepest portion is H2, a height H8 of a virtual intersection of a curve obtained by extending the second curved portion and a curve obtained by extending the third curved portion is larger than 1.5 times H10 and smaller than 3.0 times H10.

Abstract: A pneumatic tire has a turned-up carcass ply and a non-turnup carcass ply. The turned-up carcass ply is turned up around bead cores in respective bead portions from the inside to outside of the tire so as to form a pair of turned up portions extending radially outwardly on the axially outsides of the respective bead cores, and a main portion extending between the turned up portions. The non-turnup carcass ply extends between the bead portions and terminates to have edges positioned on the axially outsides of the respective turned up portions. The bead portions are each provided on its outer surface with vent lines protruding therefrom and extending continuously in the tire circumferential direction. The vent lines include a radially outer vent line formed radially outside the edges of the non-turnup carcass ply, and a radially inner vent line formed radially inside the edges of the non-turnup carcass ply.

Abstract: A pneumatic tire includes a pair of bead cores; a pair of bead fillers; a carcass ply; a side wall rubber; a chafer layer that is rolled up on an outer surface of the carcass ply; and a pair of support rubbers that is located between the side wall rubber and the carcass ply and arranged such that a rolled-up end of the chafer layer is sandwiched from both sides in a tire width direction. The pair of support rubbers includes a tape rubber located inside in the tire width direction and a rear pad rubber located outside in the tire width direction. A modulus value of the tape rubber is higher than a modulus value of the side wall rubber. A modulus value of the rear pad rubber is higher than the modulus value of the tape rubber.

Abstract: A pneumatic tire includes a bead portions and a bead core at the bead portions, the tire being mounted to a 15°-tapered specified rim. The bead portions include a portion inward in a radial direction of an extension line of an inner circumferential surface of the bead core, the extension line extending in the lateral direction, that is positioned outward in the tire lateral direction of an imaginary line passing through a first intersection point between the extension line and a tire inner surface and extends inward in the tire radial direction from the extension line at an angle perpendicular to the extension line. An angle ? formed by the imaginary line and a line segment passing through a second intersection point between a bead base and the tire inner surface and the first intersection point between the extension line and the tire inner surface is from 0° to 25°.

Abstract: The pneumatic tire comprises a pair of bead cores, a pair of bead fillers disposed outward of the pair of bead cores in a tire radial direction, a carcass layer disposed folded around the bead cores and the bead fillers, and a steel chafer including an arranged plurality of steel cords, the steel chafer being disposed between the carcass layer and a rim engaging surface. A height Hs of an outer end portion of the steel chafer located outward of the bead fillers in a tire width direction and a rim flange height Hf have the relationship: 0.5?Hs/Hf?1.0, where the height is measured from a measuring position of a rim diameter.

Abstract: A heavy-duty pneumatic tire includes a carcass ply including a main portion extending between bead cores and a pair of turn-up portions, a first reinforcing layer of a steel cord disposed in each bead portion in a U-shaped manner, and a second reinforcing layer of an organic fiber cord disposed in each bead portion and at least a part of the second reinforcing layer extending in a radial direction of the tire at an axially outward location of the first reinforcing layer. The second reinforcing layer includes an axially inner second ply and an outer second ply. The outer second ply has an inner end positioned below the bead core. The inner second ply has an inner end located axially inward of the inner end of the outer second ply, and has a substantially same length as the outer second ply in a tire cross-section.

Abstract: A tire includes a bead portion with a bead core having a main bead filler and an auxiliary bead filler, and a carcass ply wrapped around a portion of the main bead filler. An end of the carcass ply is located axially outside the main bead filler and radially below an apex of the main bead filler. The auxiliary bead filler is located axially outside the carcass ply end, with an apex of the auxiliary bead filler being located above an apex of the main bead filler.

Abstract: Disclosed is a tubeless tire having a reinforced bead portion capable of reducing the stress applied to a portion contacting a rim flange and to an edge of a carcass. The tubeless tire includes a carcass turned up around a bead core, a bead filler filled in a space above the bead core surrounded by the carcass, a steel chafer disposed to contact an outer surface of the carcass, and a first reinforcing rubber layer provided between the bead core and the carcass in order to prevent a turnup portion of the carcass from being pulled downwards, the first reinforcing rubber layer being located around a portion of the bead core that is oriented toward a rim flange. The bead portion is improved in durability under a high-pneumatic-pressure condition by reducing the stress applied to interfaces of the edge of the carcass, the steel chafer and the nylon chafer.

Abstract: A method for manufacturing a motorcycle tire includes forming a cylindrical raw tire body including a carcass body including a carcass ply and bead cores on the carcass ply, and forming a cylindrical belt ply wound in a cylindrical shape. The forming of the belt ply includes filling the tire body to expand to first expanded phase, winding a sheet-type belt ply by extending the sheet-type belt ply on bell rings to form the cylindrical belt ply with inner surface bonded to the apex of the tire body, filling the tire body to expand the apex of the tire body along with the belt ply to second expanded phase, increasing diameter of an expandable profile deck to expand the apex of the tire body along with the belt ply to third expanded phase, and winding down edges of the belt ply to bond the belt ply to the tire body.

Abstract: Provided is a rubber composition for a tire soft stiffener improved in a crack resistance and a low heat generation, wherein carbon black (A) contained in the rubber shows specific particle size distribution behavior in an aggregate mass distribution curve, and the composition contains at least one compound selected from carbon black coupling agents consisting of bismaleimide (B), alkylidene hydrazide (C), disulfane (D) and carboxylic hydrazide (E), and a heavy-duty tire produced by using the above rubber composition is further provide.

Abstract: The invention relates to improving the endurance of the beads of a radial tire for a heavy vehicle of construction plant type by reducing the cracking that starts at the end of the turn-up and spreads through the polymer coating, edging and filling materials. According to the invention, a transition element, made of a polymer transition material, is at least partially in contact, on its axially outer face, with the polymer edging material and, on its axially inner face, with a polymer filling material, the radially outer and radially inner ends of the transition element are respectively radially on the outside and radially on the inside of the end of the turn-up and the elastic modulus at 10% elongation of the polymer transition material is somewhere between the respective elastic moduluses at 10% elongation of the polymer edging material and of the polymer filling material with which the transition element is in contact.

Abstract: A pneumatic tire has a bead filler, a carcass ply, a side wall rubber and a rim strip rubber. The rim strip rubber has a main portion arranged in an outer side in a tire width direction of the bead filler, and a thin portion arranged between the carcass ply and the side wall rubber. The main portion forms an outer surface of a bead portion. The thin portion extends in the tire diametrical direction at a substantially fixed thickness. An upper end of the thin portion is positioned in an outer side in the tire diametrical direction than an upper end of the bead filler and in an inner side in the tire diametrical direction than a roll-up end of the carcass ply.

Abstract: The characteristic of the present invention is a pneumatic tire comprising a plurality of radial protrusions 60 each extending in a tire radial direction on a tire surface 31 and having a shape protruding from the tire surface outward in a tire width direction, wherein the plurality of radial protrusions 60 are provided radially with a tire rotation axis S as a center, the plurality of radial protrusions 60 each have an outer end portion 62 being an end portion located on an outer side in the tire radial direction, and the outer end portion 62 is provided to the tire surface in a tire maximum width portion (a maximum width portion T) in the tire width direction.

Abstract: The present invention relates to a pneumatic tire having a pair of spaced apart bead components, a connecting carcass between the bead components, a pair of sidewalls overlying the carcass, and a rubber chafer portion adjacent to each of the sidewalls and positioned around at least a portion of each of the bead components and intended for contacting a rigid rim of a wheel, the rubber chafer portion comprising a radially innermost toe guard and a chafer adjacent to a radially outer end of the toe guard; wherein the ratio of a modulus of the toe guard to a modulus of the chafer is in the range of 3 to 10.

Abstract: A pneumatic tire according to the invention includes: a pair of left and right beads 3 each including a bead cores 3a and bead fillers 3b; a carcass ply 5 extended around the bead cores 3a; and an inner liner 4 arranged on an inner peripheral side of the carcass ply 5, and is characterized in that the carcass ply 5 is wound up around the bead cores 3a from the outside in the direction of width of tire to the inside in the direction of width of tire, and a distortion restraining layer 7 configured to restrain distortion of the winding ends 5a of the carcass ply 5 is provided between the bead fillers 3b and the carcass ply 5 so as to overlap with a wind-up ends 5a of the carcass ply 5.

Abstract: Tire including a continuous pressure membrane. The tire includes a carcass, a rubber layer surrounding the carcass, and a belt. The carcass includes at least one continuous pressure membrane defining a generally U-shaped cross section. The pressure membrane includes a crown portion, a first sidewall portion, and a second sidewall portion connected with the first sidewall portion by the crown portion. The belt may be composed of at least one additional continuous pressure membrane adjacent the crown portion.

Abstract: A wind-up side cord of a chafer is arranged in such a manner that an angle of inclination of a first line connecting a first point and a second point with respect to a tire circumferential direction is 20 to 40 degrees, and is formed as a circular arc shape which is convex to an outer side in the tire radial direction, a turn-up side cord of the chafer is arranged in such a manner that an angle of inclination of a second line connecting a third point and a fourth point with respect to the tire circumferential direction is 30 to 50 degrees, and is equal to or less than 5 degrees in a change of the angle of inclination with respect to the tire circumferential direction, and a distance in the tire circumferential direction from a fifth point to the first line is 2 to 12 mm.

Abstract: An assembly including a tire having beads, said bead axially including outside the turn-up a layer of a material defining a bead outer profile, such that the distance A, between the carcass frame and the bead outer profile, is as defined in formula (Z), B being the distance between the end of the turn-up, said bead including first and second profiles between the carcass frame and the turn-up, the first profile extends from the bead wire and is made of a material having an extension secant modulus at a 10% elongation higher than 20 MPa, a second profile arranged in the bead such as to be in contact with a surface of the first profile and the turn-up, made of a material having an extension secant modulus at a 10% elongation of at least 7 MPa and an extension secant modulus at a 100*% extension of at least 4.5 MPa.

Abstract: Provided is a pneumatic radial tire having a rubber chafer arranged on the carcass ply in a contacting area of a bead portion with a rim; a bead filler arranged radially outside on the bead core; and a side rubber extending along an outer surface of the carcass in each a side wall portion. When inflated with a predetermined pneumatic pressure, an outer end of the folded portion of the carcass and an outer end of the bead filler are placed inward from an outer end r of a rim flange of the rim in the radial direction; an outer end of the rubber chafer is placed outward from the outer end r of the rim flange in the radial direction; and a part of a side rubber located outward from the outer end of the rim flange in the radial direction is disposed between the rubber chafer.

Abstract: A pneumatic radial tire has a rubber filler includes a lower filler and an upper filler. The lower filler surrounds a bead core and has a round cross sectional shape. The upper filler has a lower rubber hardness than the lower filler. A chafer is wound up around the bead core outside of a carcass ply and includes a metal cord. A wound-up end of the carcass ply is arranged radially outside of an upper end of the lower filler and a wound-up end of the chafer. A rubber pad has a higher rubber hardness than the upper filler and sandwiches the wound-up end of the carcass ply. The rubber pad extends to radially inside of the upper end of the lower filler and contacts with an inside of a wound-up portion of the carcass ply.

Abstract: A pneumatic tire has a nonconductive tread rubber constructing an outer surface of a tread portion, a nonconductive side wall rubber constructing an outer surface of a side wall portion, and a rim strip rubber constructing an outer surface of a bead portion. The pneumatic tire has a conductive sheet formed by a conductive rubber. The conductive sheet reaches the rim strip rubber from the tread rubber while passing between a carcass and the side wall rubber, and terminates without being exposed to the outer surface of the bead portion. The rim strip rubber is partitioned into a nonconductive rubber portion and a conductive rubber portion, and the conductive rubber portion is connected to the conductive sheet and is exposed to a bead bottom surface.

Abstract: A tire (1) includes: a tread (2); a pair of sidewalls (3) that extends almost inward, in a radial direction, from ends of the tread (2); a pair of beads (4) positioned almost inward of the sidewalls (3) in the radial direction; and a clinch portion (5) that extends from the sidewalls (3) to the beads (4), wherein a concave curved surface (21) extends on an outer surface of the clinch portion (5) in a circumferential direction, and a convex curved surface (22) formed on an outer side end, in the radial direction, of a rim flange (30) is engageable with the concave curved surface (21), a ratio R1/R of a radius of curvature R1 of the concave curved surface (21) to a radius of curvature R of the convex curved surface (22) of the rim flange, satisfies 1.7?R1/R?2.5, and the radius of curvature R1 of the concave curved surface (21) and the radius of curvature R of the convex curved surface (22) are each a radius of curvature of an arc on a cross section as taken along a plane including a center axis of the tire.

Abstract: Tire having a radial carcass reinforcement anchored in each bead by an upturn around a bead wire, reinforced by at least one layer of reinforcing elements turned up around the bead wire, one end of said at least one layer of reinforcing elements being axially on the outside of the carcass reinforcement upturn and radially on the inside of the end of said upturn, the other end turned up around the bead wire being axially on the inside of the carcass reinforcement. The reinforcing elements are non-wrapped metal cords with saturated layers, having, in a permeability test, a flow rate of less than 5 cm3/min and the distance between the end, axially on the outside of the carcass reinforcement upturn, of said at least one layer of reinforcing elements turned up around the bead wire and the end of the carcass reinforcement upturn is less than 5 mm.

Abstract: A pneumatic tire having a pair of bead portions; bead cores each having a polygonal cross section; a radial carcass having respective ends wound around the corresponding bead cores from the inner to outer side; one layer of wire chafer disposed outwardly of the radial carcass relative to the bead core; and a rubber chafer in a contact area between the bead portion and a prescribed rim, wherein, in a cross section of the tire assembled with the prescribed rim, the angle between the bottom side of the bead core and a bead seat of the prescribed rim is in the range of 0±2°, and a portion, on the tire outer surface side, of an outermost layer filament of steel cords constituting the wire chafer extends at an angle in the range of 90±5° relative to the extending direction of ply cords of the radial carcass.

Abstract: Tire (10) for a heavy goods vehicle comprising a radial carcass reinforcement (60) anchored in each of the beads (50) to an anchoring structure (700), comprising a circumferential reinforcement (70), the carcass reinforcement (60) being partially wrapped around the anchoring structure (700), the tire (10) also comprising a coupling reinforcement (150) comprising a first part (151) in contact with the carcass reinforcement (60) and being extended by a second part (152) in contact with the anchoring structure (700) as far as a point (157) radially on the outside of the anchoring structure (700), located axially between the axially innermost point (702) and the axially outermost point (704) of the anchoring structure (700), the tire (10) also comprising a stiffening reinforcement (160) surrounding the coupling reinforcement (150) and running radially on the inside of the anchoring structure (700) and of the coupling reinforcement (150), wherein the axially outside end point (166) of said stiffening reinforcement

Abstract: Provided are a rubber composition for a canvas chafer which, despite being low cost, is excellent in rim chafing resistance, resistance to rim damage, and processability (sheeting processability, rubber flow in the tire, adhesion to adjacent components) and performs well with respect to low heat build-up, and a pneumatic tire including the composition. The invention relates to a rubber composition for a canvas chafer, including: an isoprene-based rubber; a carbon black having an N2SA of 65-200 m2/g; and sulfur, wherein an amount of the isoprene-based rubber is 25-80% by mass and an amount of butadiene rubber is not more than 40% by mass, each based on 100% by mass of a rubber component of the rubber composition, and an amount of the carbon black is 40-80 parts by mass and an amount of the sulfur is 1.0-2.7 parts by mass, each per 100 parts by mass of the rubber component.

Abstract: Tire reinforcement (10) having a bi-material structure of reinforcing elements that consists of at least a plurality of extensible first reinforcing elements (1) and at least a plurality of inextensible second reinforcing elements (2), these first and second reinforcing elements being mutually parallel and distributed alternately in appropriate proportions in order to achieve the desired level of reinforcement, these first and second reinforcing elements lying within the same mean plane, this reinforcement being such that the extensible first reinforcing elements (1) are coupled to the inextensible second reinforcing elements (2) over a coupling length Lc which is shorter than the length L1 of the extensible first reinforcing elements (1) so that, with each of the first and second reinforcing elements having two ends, at least one of the ends of the extensible first reinforcing elements (1) is offset in relation to the two ends of the inextensible second reinforcing elements (2).

Abstract: Disclosed is a bead reinforcing structure for a heavy duty tire having a bead in which a carcass is turned up to surround a bead core. The bead reinforcing structure includes a carcass, and an inside steel chafer having a first predetermined inclination angle and an outside steel chafer having a second predetermined inclination angle. The inside and outside steel chafers are disposed inside and outside the carcass, respectively, thereby reinforcing the bead from the inside and outside of the carcass.

Abstract: The present invention relates to a pneumatic tire having a pair of spaced apart bead components, a connecting carcass between the bead components, a pair of sidewalls overlying the carcass, and a rubber chafer adjacent to each of the sidewalls and positioned around at least a portion of each of the bead components and intended for contacting a rigid rim of a wheel, wherein the chafers comprise 100 parts by weight of elastomer; 20 to 60 phr of a low surface area carbon black having an Iodine absorption value in a range of from about 10 to about 50 as measured by ASTM D1510; 20 to 60 phr of a high surface area carbon black having an Iodine absorption value in a range of from about 100 to about 300 g/kg as measured by ASTM D1510; wherein the sidewalls comprise 100 phr of the same elastomer used in the chafers; 20 to 60 phr of the same low surface area carbon black used in the chafers; 10 to 20 phr of the same high surface area carbon black used in the chafers; wherein the weight ratio of high surface area carbon

Abstract: A tire with a radial carcass reinforcement comprising a crown reinforcement, itself radially capped by a tread strip, the said tread strip being connected to two beads via two sidewalls, the carcass reinforcement being anchored in each of the beads to form an anchorage region. The tire additionally comprises, in part of at least each of the anchorage regions, at least two layers formed by circumferential winding of a complex strip formed of two layers consisting of continuous reinforcing elements passing from one layer to the other, the said reinforcing elements being parallel within a layer and crossed from one layer to the other at angles with respect to the circumferential direction that are identical in terms of absolute value.

Abstract: A pneumatic radial tire has a carcass ply which extends between bead cores arranged in a pair of bead portions. The carcass ply is wound up to an outer side in a tire radial direction around the bead cores. A chafer is arranged in such a manner as to wrap around the carcass ply from an inner side to an outer side in a tire width direction, around the bead core. An inner end of the chafer positioned in the inner side in the tire width direction is arranged in the outer side in the tire radial direction than a winding end of the carcass ply. A reinforcing rubber tapering off toward the outer side in the tire radial direction is provided adjacently to the outer side in the tire radial direction of the inner end of the chafer.

Abstract: A pneumatic radial tire has a pair of opposing bead portions 14, each bead portion 14 has a bead core 23 and a bead apex 24; at least one carcass reinforcing ply 12 having radially oriented steel cords 22, the at least one carcass reinforcing ply 12 has a main portion 18 and two turnups 20, one turnup 20 extending from each end of the main portion 18 and having a terminal end 21, the carcass reinforcing ply main portion 18 extends between the opposing bead cores 23 and turnups 20 are located axially outward of the bead core 23 and a portion of the bead apex 24; and two pairs of steel cord reinforced chippers, one pair adjacent each turnup, each pair having one inner chipper 40 being adjacent and on an axially inner side of the turnup 20 and one outer chipper 30 being adjacent on an axially outer side of the turnup 20, the inner and outer chippers 40, 30 being adjacent the turnup 20 each have a terminal end 41, 31 extending radially outward of the terminal end 21 of the turnup 20.

Abstract: The invention relates to a tire having a component composed of a composite of rubber chafer and outer sidewall layer components comprised of rubber compositions containing the same or different specialized cis 1,4-polybutadiene elastomers.

Abstract: Method of manufacturing a tire comprising a carcass reinforcement extending between beads, this carcass reinforcement being anchored in each bead by being wrapped around each circumferential bead reinforcement to form a turned-back portion, this carcass reinforcement comprising at least one rubber ply which is reinforced with a plurality of metal cords of low or zero permeability, each bead comprising a plurality of rubber-based strips, at least one of these strips, known as the bead rubber strip, radially on the outside of the circumferential bead reinforcement performing a function of filling and mechanical connection between the carcass reinforcement and its turned-back portion, this bead rubber strip comprising a first surface axially towards the inside in contact with the carcass reinforcement and a second surface axially towards the outside, each bead further comprising at least one other strip, known as the filler strip which, radially on the outside of the radially outermost points of the turned-back

Abstract: A pneumatic tire includes a carcass ply extending from one bead structure to another bead structure. Each bead structure includes a plurality of circumferentially wound metal wires defining a cross-sectional profile of a bead. The profile has a radial height to axial width ratio greater than 1.0 and a bead orientation angle between 30 degrees and 60 degrees.

Abstract: This invention relates to a tire having a chafer component, particularly tires expected to be used for heavy duty service in a sense of carrying heavy loads such as for example truck tires.

Abstract: A tire includes a circumferential tread, at least one belt, and a pair of sidewalls, with each sidewall forming an outermost point of a side of the tire. The tire further includes a pair of bead portions and at least one carcass ply extending circumferentially about the tire from one bead portion to the other. The tire also has a chafer having a first portion radially below the bead portion and the carcass ply, and a second portion axially outward from the bead portion and the carcass ply, wherein the sidewall is located radially below the first portion of the chafer and axially outward from the second portion of the chafer. A sidewall gum strip extends radially upward from the second portion of the chafer. The sidewall gum strip is located axially between the carcass ply turn-up end and at least a portion of the chafer.

Abstract: A pneumatic tire has a carcass structure extending through a pair of opposing bead portions and an inner liner located inward of the carcass structure, each bead portion comprising a bead core about which is wrapped the carcass structure and a toeguard. Each bead portion has a bead toe, a bead base, and a bead heel, the bead base extending between the bead toe and the bead heel. The bead heel has a profile corresponding to a sector of an ellipse or approximates a sector of an ellipse by having a dual radius structure. The bead base may have a dual taper configuration. The bead core may be substantially centered in the bead portion, as determined by the material thickness at three locations about the bead core.

Abstract: A wrap-around toeguard 18 for a pneumatic tire 10 has a carcass ply 12 or plies 12, 14 with a locked tie-in construction. Each wrap-around toeguard 18 is a non cord reinforced elastomeric unitary strip wound 360.degree. in a singular annular bead. The wrap-around toeguard cord reinforced unitary strip 18 can be formed of a single elastomeric composition having a shore hardness D of greater than 40. Alternatively the wrap-around toeguard may additionally include an apex portion 29 and a chafer portion 27 along with the toeguard portion 28, each portion 27, 29 being co-extruded or otherwise hot formed and shaped with the toeguard portion 28 to form the unitary strip 18 and can have distinct elastomeric composition relative to the toeguard portion 28.

Abstract: The present invention relates to a pneumatic tire having a pair of spaced apart bead components, a connecting carcass between said bead components, and a rubber chafer positioned around at least a portion of each of said bead components and intended for contacting a rigid rim of a wheel, wherein said chafer comprises an outer skin layer intended for contacting the rigid rim and an inner core layer disposed radially inward of the skin layer.

Abstract: A wind-up side cord of a chafer is arranged in such a manner that an angle of inclination of a first line connecting a first point and a second point with respect to a tire circumferential direction is 20 to 40 degrees, and is formed as a circular arc shape which is convex to an outer side in the tire radial direction, a turn-up side cord of the chafer is arranged in such a manner that an angle of inclination of a second line connecting a third point and a fourth point with respect to the tire circumferential direction is 30 to 50 degrees, and is equal to or less than 5 degrees in a change of the angle of inclination with respect to the tire circumferential direction, and a distance in the tire circumferential direction from a fifth point to the first line is 2 to 12 mm.

Abstract: A pneumatic tire includes: a pair of bead portions 11; bead cores 12 each having a polygonal configuration in cross section; a radial carcass 13 having respective ends thereof wound around the corresponding bead cores from the inner side to the outer side of the tire; one layer of wire chafer 14 disposed on the outer side of the radial carcass 13 with respect to the bead core 12; and a rubber chafer 16 disposed in a contact area between the bead portion 11 and a prescribed rim R, wherein, in a cross section of the tire assembled with the prescribed rim R, the angle formed by the bottom side 12a of the bead core with respect to a bead seat Ra of the prescribed rim R is set in the range of 0±2°, and a portion, on the tire outer surface side, of a spiral filament or an outermost layer filament of steel cords 15 constituting the wire chafer 14 extends at an angle in the range of 90±5° with respect to the extending direction of ply cords constituting the radial carcass 13.

Abstract: A tire includes a rim protector (20) positioned on an outside in an axial direction of a sidewall. The rim protector (20) includes a main portion (34), an outer portion (36) and an inner portion (38). The main portion (34) has a large number of blocks (44). The blocks (44) are arranged in a circumferential direction. The main portion (34) further has a first slit (46), a second slit (48) and a large number of third slits (50). The first slit (46) is extended in the circumferential direction. The second slit (48) is extended in the circumferential direction. Each of the third slits (50) is extended in a radial direction. The third slit (50) reaches the second slit (48) from the first slit (46). Each of the blocks (44) is surrounded by the first slit (46), the second slit (48) and two of the third slits (50).

Abstract: A reinforced rubber article containing a rubber article and a fibrous layer embedded into the rubber article. The fibrous layer contains monoaxially drawn tape elements having at least a first layer, an upper surface and a lower surface. The first layer comprises a blend of polyester and nylon 6. Methods of forming the reinforced rubber article are also disclosed.

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: A pneumatic radial tire has a chipper in place of a traditional apex, the chipper located between a carcass main portion and turnup portion. The chipper layer may be composed of a chopped carbon fiber and aramid composite reinforced elastomeric layer. The tire sidewalls have a radial height SH and a section width SW located within a range of 0.4 to 0.44 of the sidewall radial height SH measured from the bead core. The section width SW may further be located within a range of 0.1? to 0.3? inches from a radially outward end of the chipper layer in a radial direction. The tread may of a dual layer construction, having a radially inward first layer formed of a relatively low rolling resistance compound and a radially outward second layer formed of a compound containing silica.

Abstract: The present invention is directed to a pneumatic tire comprising at least one component selected from the group consisting of apexes, flippers and chippers, the at least one component comprising a rubber composition, the rubber composition comprising a diene based elastomer and from 1 to 30 parts by weight, per 100 parts by weight of elastomer (phr), of a polybenzobisoxazole (PBO) short fiber having a length ranging from 0.5 to 20 mm having a thickness ranging from 10 to 30 microns, and from 1 to 50 phr of an epoxidized polyisoprene having a number-average molecular weight of 5000 to 100000.

Abstract: The present invention is directed to a pneumatic tire comprising at least one component selected from the group consisting of apexes, flippers and chippers, the at least one component comprising a rubber composition, the rubber composition comprising a diene based elastomer and from 1 to 30 parts by weight, per 100 parts by weight of elastomer (phr), of a polybenzobisoxazole (PBO) short fiber having a length ranging from 0.5 to 20 mm having a thickness ranging from 10 to 30 microns, and from 1 to 50 phr of an epoxidized polyisoprene having a number-average molecular weight of 5000 to 100000.