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Tire Inflation System Having a Rotary Coupling

Thu, 23 Feb 2017 08:00:00 EST

A tire inflation system having a rotary coupling. The rotary coupling may have a mounting member and a rotating member. The rotating member may be rotatably coupled to the mounting member and may have a rotating member passage that may fluidly connect a first conduit to a second conduit that may be fluidly connected to the tire.



TIRE COMPRISING A STRIP OF DAMPING FOAM

Thu, 23 Feb 2017 08:00:00 EST

Tyre comprising an inner liner facing an internal cavity of the tyre, an adhesive layer positioned on the inner liner and a strip of noise-damping foam attached to the inner liner by the adhesive layer, characterized in that the adhesive layer is based on a silanized polyether.



TIRE COMPRISING A HIGH CONTRAST MATRIX SYMBOL ON THE SIDEWALL THEREOF

Thu, 23 Feb 2017 08:00:00 EST

A tire made of rubbery material comprising a sidewall (3). The sidewall (3) comprises at least one coded matrix symbol (4), the coded matrix symbol (4) comprising dark parts and light parts, the dark parts being made up of a texture formed as an integral part of the sidewall (3) and contrasting against the rest of the tire (1). The texture is an organized arrangement of a plurality of elements (401, 402, 403, 404, 405, 411, 414).



PNEUMATIC TIRE

Thu, 23 Feb 2017 08:00:00 EST

Wear resistance is improved. To that end, a pneumatic tire of the disclosure herein includes, on a tread surface 1, a sipe 4 extending in a direction intersecting a tire circumferential direction. A sipe width of the sipe becomes maximum at a predetermined depth direction position P1 at predetermined extending direction position P2 of the sipe, and gradually increases at the predetermined depth direction position P1 from both ends in the sipe extending direction to the predetermined extending direction position P2, and also gradually increases at the predetermined extending direction position P2 from both ends in the sipe depth direction to the predetermined depth direction position P1.



PNEUMATIC TIRE

Thu, 23 Feb 2017 08:00:00 EST

The pneumatic tire of this disclosure comprises on a tread surface a widthwise outermost land portion partitioned by an outermost circumferential main groove and a tread edge, wherein: the widthwise outermost land portion has a plurality of side sipes extending to a tread widthwise outer side in a manner spaced from each other in the tread circumferential direction; the widthwise outermost land portion has an inner circumferential sipe and an outer circumferential sipe, the inner circumferential sipe extending in the tread circumferential direction, the outer circumferential sipe being positioned on a tread widthwise side outer than the inner circumferential sipe and extending in the tread circumferential direction; and, when h1 is a groove depth of the outermost circumferential main groove, h2 is a sipe depth of the inner circumferential sipe, and h3 is a sipe depth of the outer circumferential sipe, h1, h2 and h3 satisfy: h1>h3>h2.



TIRE

Thu, 23 Feb 2017 08:00:00 EST

A tire comprises a tread portion provided with a first crown main groove continuous in the tire circumferential direction, a second crown main groove continuous in the tire circumferential direction, and a center land zone defined therebetween. The center land zone is provided with first center lug grooves extending from the first crown main groove and terminating within the center land zone. Between the adjacent first center lug grooves, a first corner portion, which is formed between a ground contacting surface of the center land zone and a groove wall of the inboard first crown main groove, is provided with a first part and a second part which are arranged in the tire circumferential direction, wherein the first portion is chamfered, and the second part is not chamfered or less chamfered than the first part.



TIRE

Thu, 23 Feb 2017 08:00:00 EST

A tire in which a reinforcement layer and a tread section are laminated in this order from the inside toward the outside in a radial direction of the tire. The tread section includes an inner base layer, an outer base layer, and a cap layer that are laminated in this order from the inside toward the outside in the radial direction of the tire. The cap layer is made of a material of which a modulus of elasticity and a loss tangent are lower than those of a material of the outer base layer. The inner base layer is made of a material of which a modulus of elasticity is lower than that of a material of the cap layer.



MULTI-COMPOSITE PLANAR REINFORCEMENT

Thu, 23 Feb 2017 08:00:00 EST

A flat or planar reinforcer shaped as a multicomposite strip (R1), which is defined by three main perpendicular directions: an axial direction (X), a transverse direction (Y), and a radial direction (Z), has a width LR in the Y direction of between 2 and 100 mm, and has a thickness ER in the Z direction of between 0.1 and 5 mm. A ratio LR/ER is greater than 3. The multicomposite strip includes a plurality of monofilaments made of a composite material. The monofilaments are oriented along the X direction and include filaments of a mineral material embedded in a thermoset resin having a glass transition temperature Tg1 that is greater than 70° C. The monofilaments are coated in a layer of thermoplastic material. The reinforcer may be used to reinforce a tire and a multilayer laminate, which may be used to reinforce a tire.



VALVE FOR AIR CHAMBERS

Thu, 16 Feb 2017 08:00:00 EST

A valve for air chambers includes a fixed body and a mobile selector body, wherein the mobile selector body is disposed coaxially in the fixed body. The mobile selector body is configured to slide with respect to the fixed body. The mobile selector body has a first position of use, associated during use to at least a first outlet, and a second position of use, associated during use to at least a second outlet.



AIR MAINTENANCE PUMPING ASSEMBLY AND TIRE

Thu, 16 Feb 2017 08:00:00 EST

A tire assembly includes: a tire having a pneumatic cavity; first and second sidewalls extending respectively from first and second tire bead regions to a tire tread region, the first sidewall having at least one bending region operatively bending when circumferentially adjacent a rolling tire footprint; a sidewall groove defined by groove sidewalls positioned within the bending region of the first tire sidewall, the groove deforming segment by segment between a non-deformed state and a deformed, constricted state in response to the bending of the first sidewall bending region circumferentially adjacent the rolling tire footprint; an air passageway resiliently deforming segment by segment between an expanded condition and an at least partially collapsed condition in response to respective segment by segment deformation of the sidewall groove when circumferentially adjacent the rolling tire footprint; and an assembly mounted to the first sidewall the tire, the assembly including a pressure regulator with an elongate cylindrical housing and a rectangular mounting plate, the mounting plate having an inlet port and two outlet ports for controlling air flow from outside of the tire to and from the pneumatic cavity.



PNEUMATIC TIRE WITH POST CURE SEALANT LAYER

Thu, 16 Feb 2017 08:00:00 EST

The present invention is directed to a pneumatic tire comprising a radially outer circumferential rubber tread disposed on a supporting carcass, an inner liner rubber layer radially inwardly disposed on the supporting carcass, and a sealant layer adhered to and disposed inwardly of the rubber inner liner layer as a radially inner surface of the tire, wherein the sealant layer comprises 100 parts by weight of elastomer comprising 5 to 10 parts by weight, per 100 parts by weight of elastomer (phr) of butyl rubber, 10 to 25 phr of bromobutyl rubber, and 65 to 85 phr of polybutene: and from 0.05 to 2 phr of a polymeric amine.



PNEUMATIC TIRE

Thu, 16 Feb 2017 08:00:00 EST

A tire 2 of the present invention includes a pair of fillers 20 turned up around beads 10. Each filler 20 has multiple cords made of steel and aligned with each other. In the tire 2, an outer surface of a chafer 8 has a bottom surface 26 that contacts with a seat surface of a rim 30. When a reference line M represents a straight line that contacts with the bottom surface 26 in a cross-section obtained by cutting the tire at the plane perpendicular to the circumferential direction, the bottom surface 26 has a depression 66 that is shaped so as to project radially outward of the reference line M. A ratio (D/L) of a maximum depth D of the depression 66 to a width L of the depression 66 is greater than or equal to 0.007 and not greater than 0.060.



PNEUMATIC TIRE

Thu, 16 Feb 2017 08:00:00 EST

A pneumatic tire includes on a tread surface at least two circumferential main grooves extending in a tread circumferential direction, and a rib-like land portion partitioned by the two circumferential main grooves extending in the tread circumferential direction, wherein: the rib-like land portion has one or more circumferential sipes extending in the tread circumferential direction; and the rib-like land portion has one or more one-end opening lateral grooves and one or more first one-end opening sipes, the one-end opening lateral grooves extending from one of the two circumferential main grooves in a tread widthwise direction until a position connecting to the circumferential sipes, and ending within the rib-like land portion; the first one-end opening sipes extending from the other of the two circumferential main grooves in a tread widthwise direction, and ending within the rib-like land portion without connecting to the circumferential sipes.



Tire Comprising Reduced Rubber Mixture Thicknesses and Sheathed Casing Framework Reinforcement Elements

Thu, 16 Feb 2017 08:00:00 EST

A tire having a radial carcass reinforcement having at least one layer of metal reinforcing elements. The tire includes a crown reinforcement, itself radially capped by a tread. The tread is connected to two beads by two sidewalls. The reinforcing elements of at least one layer of the carcass reinforcement have at least one filamentary element and at least one sheath covering the at least one filamentary element. The at least one sheath includes at least one layer of a thermoplastic polymer composition. The thickness of rubber compound between the internal surface of the tire cavity and the point of a metal reinforcing element of the carcass reinforcement that is closest to the internal surface of the cavity is less than or equal to 3.8 mm.



PNEUMATIC TIRE

Thu, 16 Feb 2017 08:00:00 EST

A pneumatic tire includes a carcass, a tread portion and a belt having a first inclined belt ply, circumferential direction belt ply, second inclined belt ply, and third inclined belt ply. With respect to a tire circumferential direction, an angle of cords of the first inclined belt ply is from 45° to 60°, an angle of a cord of the circumferential direction belt ply is 5° or less, an angle of cords of the second inclined belt ply is from 30° to 60°, and an angle of cords of the third inclined belt ply exceeds 5° and is 30° or less. The width of the third inclined belt ply is 80% or more of a ground contact width, and the cords of the second inclined belt ply and the cords of the third inclined belt ply are inclined in opposite directions with respect to the tire circumferential direction.



Tire Including A Casing Layer That Includes Sheathed Casing Reinforcement Elements

Thu, 16 Feb 2017 08:00:00 EST

The tire (10) comprises a crown (12) surmounted by a tread (22), two sidewalls (24), two beads (26), each sidewall (24) connecting each bead (26) to the crown (12), a carcass reinforcement (34) anchored in each of the beads (26) and extending in the sidewalls (24) as far as the crown (12). The carcass reinforcement (34) comprises one carcass ply (44) comprising carcass reinforcing elements (46) having a mean laying pitch (P) strictly greater than 1.5 mm. The carcass ply (44) comprises an elastomer matrix (54) in which the carcass reinforcing elements (46) are embedded, each carcass reinforcing element (46) comprising: one filamentary element (56), and one sheath (58) coating the filamentary element (56) and comprising at least one layer (60) of a thermoplastic polymer composition.



FLUID RESERVOIR WITHIN A TIRE

Thu, 16 Feb 2017 08:00:00 EST

A wheel assembly has a rim with an outer radial surface. A tire coupled to the rim defines a first interior region between the outer radial surface and the tire. A bladder coupled to the rim defines a second interior region between the outer radial surface and the bladder. A third interior region is defined between the bladder and the tire. The wheel assembly includes a valve fluidly coupled to the second interior region and the third interior region. The valve is movable between a first position and a second position. The second interior region and the third interior region are fluidly isolated from one another when the valve is in the first position. The second interior region and the third interior region may be fluidly coupled to one another when the valve is in the second position.



OUTLET SCREW ASSEMBLY FOR AN AIR MAINTENANCE TIRE

Thu, 09 Feb 2017 08:00:00 EST

An air maintenance tire assembly includes an air pumping passageway located within a tire sidewall to generate compressed air. An outlet screw assembly includes an elongate screw body residing within a profiled sidewall bore. The screw body extends through an axial span of the first sidewall to the tire cavity to conduct air from the sidewall air passageway to the tire cavity. The screw body has enlarged sectional end components to deter radial dislodging of the screw body from the sidewall bore during operation.



INLET AIR PASSAGE SCREW ASSEMBLY FOR AN AIR MAINTENANCE TIRE

Thu, 09 Feb 2017 08:00:00 EST

An air maintenance tire assembly having an elongate air pumping sidewall air passageway includes an inlet air passage screw assembly inserted through a tire sidewall profiled bore to conduct air from outside the tire into a regulator positioned within a tire cavity. The screw assembly includes a screw body having at an outer end a large-diameter filter housing, a smaller-diameter midsection shank portion, and an inner large-diameter valve housing connecting to the regulator within the tire cavity. A valve mechanism seats within the valve housing and moves between an open position conducting air from the screw body into the regulator assembly and a closed position preventing a backflow of air from the regulator assembly.



SIDE-REINFORCED RUN-FLAT RADIAL TIRE

Thu, 09 Feb 2017 08:00:00 EST

A run-flat radial tire has a tire section height SH equal to or greater than 115 mm and is equipped with a side-reinforcing rubber layer extending along an inner surface of a carcass from one tire side portion to another tire side portion wherein a tire equatorial plane CL is sandwiched in between the one tire side portion and the another tire side portion, wherein a thickness GE of the side-reinforcing rubber layer at the position of the tire equatorial plane and a thickness GA of the side-reinforcing rubber layer at positions where the carcass reaches its maximum width satisfy the relational expression GE≦0.6×GA.



SIDE-REINFORCEMENT-TYPE RUN-FLAT RADIAL TIRE

Thu, 09 Feb 2017 08:00:00 EST

A run-flat radial tire is provided with a side reinforcement rubber layer that extends in the tire radial direction along an inner face of a carcass and an angled belt layer that is provided at the tire radial direction outer side of the carcass. An overlap length L between a maximum width angled belt layer and the side reinforcement rubber layer satisfies the relationship L>0.14× SH with a tire section height SH. A thickness GD of the side reinforcement rubber layer at a position that is 14% of the tire section height to the tire axial direction inner side from a tire axial direction end portion of the maximum width angled belt layer and a thickness GA of the side reinforcement rubber layer at a maximum width position of the carcass satisfy the relationship GD/GA≧0.3.



RUN-FLAT TIRE

Thu, 09 Feb 2017 08:00:00 EST

A run-flat tire has a carcass that spans a region between a pair of bead portions, a side reinforcement layer that is provided at a tire side portion that connects the bead portions and a tread portion, an inclined belt layer that is provided at an outer side of the carcass in a tire radial direction so as to span a tire equatorial plane CL, and that is formed by cords that are inclined relative to the tire circumferential direction, and a reinforcement cord layer that is provided at an outer side of the inclined belt layer in the tire radial direction, and only on a half portion of the tire that is located on an inner side in a tire fitting direction of the tire equatorial plane CL, and that is formed by cords that are inclined relative to the tire circumferential direction.



Side-Reinforced Run-Flat Tire

Thu, 09 Feb 2017 08:00:00 EST

Provided is a side-reinforced run-flat tire including a tread portion, a pair of sidewall portions extending on both sides of the tread portion, and reinforcing rubber provided in the sidewall portions, the side-reinforced run-flat tire further including: short fibers bonded, via an adhesive layer, to at least a portion of a region of a tire inner surface that is located in each of side portions, wherein the adhesive layer has a heatproof temperature of from 50 to 100° C.



PNEUMATIC TIRE

Thu, 09 Feb 2017 08:00:00 EST

A pneumatic tire comprises a carcass formed of a carcass ply extending between a pair of bead portions in a toroidal shape, and a bead core disposed in a respective one of the bead portions, the bead core comprising an axially inner core and an axially outer core respectively disposed on an axially inner side and the axially outer side of the carcass ply. The bead portion comprises an inner bead apex rubber extending radially outward from the inner core, and an outer bead apex rubber extending radially outward from the outer core. An outer apex height Ho from a bead base line to a outer end of the outer bead apex rubber is in a range of from 120% to 150% of an inner apex height Hi from the bead base line to the outer end of the inner bead apex rubber.



PNEUMATIC TIRE

Thu, 09 Feb 2017 08:00:00 EST

In a tire 2, a contour of an outer surface of the second apex 38 includes: a circular arc C2 that extends inward from an outer end, in the radial direction, of the contour and is convex outward in the axial direction; and a circular arc C3 that is located inward of the circular arc C2 in the radial direction, is in contact with the circular arc C2, and is convex inward in the axial direction. A difference (Ht−Hw/2) between a height Ht from a bead base line to a contact point between the circular arc C2 and the circular arc C3 and a height that is half of a height Hw from the bead base line to a maximum width position is equal to or greater than −10 mm and equal to or less than 10 mm.



PNEUMATIC TIRE

Thu, 09 Feb 2017 08:00:00 EST

A pneumatic tire includes: a zigzag circumferential direction groove that is formed in a tread portion by alternating and continuously formed first inclined portions and second inclined portions, the first inclined portions being inclined with respect to a tire circumferential direction and the second inclined portions being inclined in the opposite direction to the first inclined portions with respect to the tire circumferential direction; first lug grooves that are inclined in the same direction as the first inclined portions with respect to the tire circumferential direction and that merge with the first inclined portions; and second lug grooves that are inclined in the opposite direction to the first inclined portions with respect to the tire circumferential direction and that intersect the first inclined portions.



Pneumatic Tire

Thu, 09 Feb 2017 08:00:00 EST

A pneumatic tire has a tread pattern which includes a center land portion between a first outer circumferential groove disposed outward of a tire center line in a tire width direction and a first inner circumferential groove disposed inward of the tire center line in the tire width direction, an outer land portion between the first outer circumferential groove and a second outer circumferential groove disposed outward of the first outer circumferential groove in the tire width direction, and an outer shoulder land portion disposed outward of the second outer circumferential groove in the tire width direction, the center land portion. The outer land portion, and the outer shoulder land portion are continuous land portions which are continuous in an annular manner in a tire circumferential direction.



PNEUMATIC TIRE

Thu, 09 Feb 2017 08:00:00 EST

A pneumatic tire include a tread portion with a designated installing direction to a vehicle to define an outboard tread edge and an inboard tread edge, the tread portion including an inboard portion defined between the inboard tread edge and a tire equator and an outboard portion defined between the outboard tread edge and the tire equator. The inboard portion is provided with a circumferentially and continuously extending first main groove and a circumferentially and continuously extending second main groove arranged between the first main groove and the inboard tread edge. An axial distance from the tire equator to a centerline of the second main groove is in a range of from 0.35 to 0.75 times of a width of the inboard portion. No circumferentially and continuously extending main grooves are provided with the outboard portion.



Crown Reinforcement For An Airplane Tire

Thu, 09 Feb 2017 08:00:00 EST

Airplane tire comprises working reinforcement (2) radially inside of tread (3) and radially outside of carcass reinforcement (4). working reinforcement (2) comprises working biply (21). The radially innermost working biply (21) has the greatest axial width (LT) and comprises two axial ends (E). Carcass reinforcement (4) comprises carcass layer (41). Distance (D) between axial end (E) of the radially innermost working biply (21) and its orthogonal projection (I) onto the radially outermost carcass layer (41) is at least equal to 8 mm. Distance (D′) between point (F) of radially innermost working biply (21), axially inside of axial end (E) at a distance (L) equal to 25 mm, and its orthogonal projection (J) onto the radially outermost carcass layer (41) is at most equal to the distance (D) and is such that angle (A) equal to atan[(D−D′)/L] is at least equal to 12°.



PNEUMATIC TIRE

Thu, 09 Feb 2017 08:00:00 EST

A pneumatic tire includes a carcass, a tread portion and a belt layer having a first inclined belt ply, circumferential direction belt ply, and second inclined belt ply. Ground contact edge side belt plies extend from tire width direction end portions of the second inclined belt ply toward tire width direction outsides, at a tire radial direction outside of the carcass. With respect to a tire circumferential direction, an angle of cords of the first inclined belt ply is from 45° to 60°, an angle of a cord of the circumferential direction belt ply is 5° or less, an angle of cords of the second inclined belt ply is from 30° to 60°, and an angle of cords of the ground contact edge side belt plies exceeds 5° and is 30° or less. A distance dimension of the ground contact edge side belt plies is 80% or more of a ground contact width.



BIAS TIRE AND METHOD FOR MANUFACTURING SAME

Thu, 09 Feb 2017 08:00:00 EST

Provided is a bias tire includes a carcass extending between a pair of bead portions, a pair of sidewall portions, a tread, and a reinforcement layer (5), formed by cords (5Cb), disposed so as to cover at least a portion of a tire circumferential edge (BEi) on the inner side, in the tire radial direction, of the innermost ply (2Bi) of the carcass in a tire half portion (HFa) on a side where, as a cord (Cb) of a tire circumferential end on the inner side, in the tire radial direction, of the innermost ply (2Bi) approaches the tire circumferential edge on the inner side, in the tire radial direction, of the innermost ply (2Bi) along the tire circumferential direction, the cord (Cb) is inclined so as to separate from the tire equator (CL).



REGENERATION OF AN AIR DRYER ON A VEHICLE

Thu, 09 Feb 2017 08:00:00 EST

An air supply system on a vehicle for inflating and deflating a tire. The system includes a compressor connected to a drier having drying material to extract water from the air and a deflation line connectable between the tire and the dryer. The air dryer is operable in a first mode in which air passing through the dryer in a first direction is dried by the dryer and a second regeneration mode in which air passes through the dryer in a direction opposite to the first to remove water collected by the dryer, characterized in that the air used for the regeneration is air deflated from the tire.



RUBBER COMPOSITION FOR TIRE AND PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A rubber composition for a tire comprises a diene rubber, a petroleum-derived wax and a fatty acid metal salt, wherein the difference (Δ=Cmw−Cmf) obtained by subtracting the carbon number (Cmf) of a constituent fatty acid contained the most in the fatty acid metal salt from the carbon number (Cmw) of a hydrocarbon contained the most in the petroleum-derived wax is −10 or more and 8 or less. The rubber composition can suppress whitening of a rubber surface while maintaining ozone resistance. A pneumatic tire has a rubber part comprising the rubber composition, wherein the rubber part is at least one selected from the group consisting of a tread rubber, a side wall rubber, and a rim strip.



PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

Provided is a pneumatic tire in which the performance is to be improved while suppressing an increase in the thickness by using a reinforcing material applicable to such an insert member or the like by which a target reinforcing performance can be attained while suppressing an increase in the thickness. Provided is a pneumatic tire including: a pair of bead portions 11; a pair of side wall portions 12; and a tread portion 13, and including a carcass layer 2 composed of at least one carcass ply extending toroidally between bead cores 1 embedded in the pair of bead portions respectively as a skeleton. A reinforcing layer 4 using a reinforcing material composed of a core/sheath-type composite fiber (C) in which a core portion is made of a high melting point polyolefin-based resin (A) having a melting point of 150° C. or higher and a sheath portion is made of a low melting point polyolefin-based resin (B) having a melting point of 80° C. or higher and lower than 150° C. is provided on at least the outside of the bead core in the tire radial direction.



TIRE

Thu, 02 Feb 2017 08:00:00 EST

This tire is provided with reinforcing cord layers that reinforce a bead part. The reinforcing cord layers are such that at the bead part at the inner side of vehicle mounting, the number of layers of the reinforcing cord layers with respect to a bead filler is greater at the inner side in the direction of tire width compared to the outer side in the direction of tire width with respect to the bead filler, and at the bead part at the outer side of vehicle mounting, the number of layers of the reinforcing cord layers with respect to the bead filler is greater at the outer side in the direction of tire width compared to the inner side in the direction of tire width with respect to the bead filler.



HEAVY DUTY PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A heavy duty pneumatic tire includes a tread portion provided with a zigzag central main groove having zigzag pitches of from 40 to 50. The central main groove includes a bottom and a pair of groove walls. Each groove wall includes a bottom side steep sloped portion and a top side gentle sloped portion. The steep sloped portion includes a height of from 10% to 35% of a depth of the central main groove and an angle of from 0 to 10 degrees with respect to a tire normal line of a tread ground-contact surface. The gentle sloped portion extends radially outwardly from the steep sloped portion. Each groove wall includes an internal corner protruding and an external corner, and the angle of the gentle sloped portion decreases in a range of from 15 to 25 degrees from the internal corner toward the external corner.



RADIAL STONE EJECTORS

Thu, 02 Feb 2017 08:00:00 EST

A pneumatic tire is disclosed having a tread portion including a tread groove having a groove bottom and groove sidewalls. The tread groove has a groove width defmed as a shortest distance between the groove sidewalls. The groove has a groove length extending generally parallel to the groove sidewalls. A sequence of circumferentially spaced stone ejector ribs span between the opposed groove sidewalls.



TIRE

Thu, 02 Feb 2017 08:00:00 EST

Provided is a tire such that both tire weight reduction and high durability can be achieved by establishing a technology capable of ensuring the sufficient effect of preventing diameter growth even when the amount of steel used in a belt layer is decreased. The tire includes: two or more crossing belt layers 4 including rubberized layers of steel cords tilting and extending at an angle of 10° to 30° with respect to a tire equatorial plane, the rubberized layers being arranged such that the directions of the cords intersect each other; and a high-angle bell layer 3 including a rubberized layer of steel cords tilting and extending at an angle which is 5° or more greater than the angle of the crossing belt layers. The mass of the steel cords per unit area included in the high-angle belt layer is 85% or less of the mass of the steel cords per unit area included in the crossing belt layers, and compressive rigidity per unit area in a cross section orthogonal to the longitudinal direction of the steel cords of the high-angle belt layer is greater than compressive rigidity per unit area in a cross section orthogonal to the longitudinal direction of the steel cords of the crossing belt layers.



PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

To reduce noise while suppressing increase in rolling resistance, without affecting the formation of a carcass line, provided is a pneumatic tire (10) including: a carcass (13); an inclined belt (14), and an inner liner (17). The inclined belt (14) is disposed on the tire radial outer side of the crown portion of the carcass (13). The inclined belt (14) includes at least one inclined belt layer (16). The inclined belt layer (16) has cords extending as being inclined at 35″ or more with respect to the tire circumferential direction. The inner liner (17) has a thickness of 1.5 mm or more at least in part of a side portion (19).



PNEUMATIC TIRE AND METHOD FOR MANUFACTURING THEREOF

Thu, 02 Feb 2017 08:00:00 EST

A belt layer of a pneumatic tire includes a first main working belt, a second main working belt arranged at an outer side of the first main working belt in a tire-radial direction, the second main working belt having a cord angle which differs from a cord angle of the first main working belt in a direction with respect to a tire-circumferential direction, and a reinforcement belt. A cord angle of the reinforcement belt is not smaller than 6 degrees and not larger than 9 degrees. a width of the reinforcement belt is equal to or wider than 50% of a tire-section width and not wider than a width of a narrower one of the first and second main working belts, and is equal to or wider than 30% of a periphery length of the carcass and not wider than 50% thereof.



PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A belt layer of a pneumatic tire includes a first main working belt, a second main working belt arranged at an outer side of the first main working belt in a tire-radial direction, and a reinforcement belt. A cord angle of the second main working belt differs from that of the first main working belt in a direction with respect to a tire-circumferential direction. A cord angle of the reinforcement belt is not smaller than 6 degrees and not larger than 9 degrees. A width of the reinforcement belt is equal to or wider than 50% of a tire-section width and not wider than either narrower one of the first and second main working belts. A width of a shoulder land portion is between 10% and 15% of a tread width which is a distance from a center of the tread portion to one end of the tread portion.



METHOD OF MANUFACTURING PNEUMATIC TIRE AND PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A method of manufacturing a pneumatic tire comprising a belt which is wound with a belt-under diameter D outside a carcass ply in a tire-radial direction, includes preparing a strip-like rubber-coated cord member where a plurality of belt cords which are arranged approximately parallel are coated with rubber and a width of the cord member in a lateral direction is πD sin θ. The cord member is cut at the cord angle θ with respect to a longitudinal direction to cut out a belt forming member having a parallelogram which includes circumferential direction sides extending in a tire circumferential direction in a wound state and formed as cut portions and inclined sides extending parallel to the belt cord and defined as both side portions of the cord member. The belt forming member is wound into a circular cylindrical shape and joined the inclined sides which face each other to each other.



PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A belt layer includes first and second main working belts and a reinforcement belt. A cord angle of the reinforcement belt is 6 to 9 degrees. A width of the reinforcement belt is equal to or wider than 50% of a tire-section width and not wider than a width of a narrower one of the first and second main working belts. When an intersection of the perpendicular line extending from a groove bottom center of a shoulder main groove to the reinforcement belt and an upper surface of the reinforcement belt is set as an origin, a ratio of a dimension from the origin to an end portion of the reinforcement belt to a half width of the reinforcement belt is not smaller than −0.07 and not larger than 0.11.



METHOD OF MANUFACTURING PNEUMATIC TIRE AND PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A method of manufacturing a pneumatic tire includes preparing a belt forming member formed of belt cords arranged parallel and covered with rubber. In a development state, the belt forming member is formed into a parallelogram, so that in a state wound with the belt cords extending in a direction inclined at a cord angle θ, the belt forming member is formed into a circular cylindrical configuration where a belt-under diameter D is not smaller than 940 mm and not larger than 960 mm and a belt width W is not smaller than 270 mm and not larger than 310 mm, and the cord angle θ, the belt-under diameter D and the belt width W satisfy a relationship of 0.577 πD≦W/tanθ



PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A pneumatic tire has a belt layer between a carcass and a tread portion. The belt layer has first and second main working belts, and a reinforcement belt. A cord angle of the reinforcement belt is not smaller than 6 degrees and not larger than 9 degrees and width thereof is equal to or wider than 50% of a tire-section width and not wider than either narrower one of the first and second main working belts. In a state where the pneumatic tire is mounted on a predetermined rim and filled with a minute internal pressure with no load applied, an arc passing points on both maximum width positions and a point on a tire equatorial plane of the reinforcement belt, in meridian section, has a radius of curvature of not smaller than 2500 mm. A total thickness TCE and TSH satisfy a relationship of 1.05TSH≦TCE≦1.35TSH.



PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A belt layer of a pneumatic tire includes a first main working belt, a second main wording belt having a cord angle different from a cord angle of the first main working belt in a direction with respect to a tire-circumferential direction, reinforcement belt. A cord angle of the reinforcement belt and a representative main groove angle have different directions with respect to the tire-circumferential direction, the representative main groove angle being defined as an angle formed by an element of the main groove with the longest length in the tire-circumferential direction and the tire-circumferential direction.



PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A belt layer of a pneumatic tire includes a first main working belt, a second main working belt arranged at an outer side of the first main working belt in a tire-radial direction having a cord angle θp2 different from a cord angle Γp1 of the first main working belt in a direction with respect to a tire-circumferential direction, and a reinforcement belt. An absolute value of a cord angle θr of the reinforcement belt is not smaller than 6 degrees and not larger than 9 degrees. The cord angles θp1, θp2, and θr satisfy “−8≦θp1+θp2+θr≦8”.



PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A belt layer of a pneumatic tire includes a first main working belt, a second main working belt arranged at an outer side of the first main working belt in a tire-radial direction, the second main working belt having a cord angle different from a cord angle of the first main working belt in a direction with respect to a tire-circumferential direction, and a reinforcement belt. A cord angle of the reinforcement belt is not smaller than 6 degrees and not larger than 9 degrees. A width of the reinforcement belt is equal to or wider than 50% of a tire-section width and not wider than a width of a narrower one of the first and second main working belts. A first inclination angle is 20±5 degrees.



PNEUMATIC TIRE

Thu, 02 Feb 2017 08:00:00 EST

A pneumatic tire has a belt layer arranged between a carcass and a tread portion. The belt layer has a first main working belt, a second main working belt arranged at an outer side of the first main working belt in a tire-radial direction, and a reinforcement belt. A cord angle of the second main working belt differs from a cord angle of the first main working belt in a direction with respect to a tire-circumferential direction. A cord angle of the reinforcement belt is not smaller than 6 degrees and not larger than 9 degrees. A width of the reinforcement belt is equal to or wider than 50% of a tire-section width and not wider than either narrower one of the first and second main working belts.



Pneumatic Tire

Thu, 26 Jan 2017 08:00:00 EST

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.