Abstract: A tire includes at least one reinforcing structure of the carcass type anchored on each side in a bead. Each bead is extended radially outwards by a sidewall. The reinforcing structure extends circumferentially from the bead towards the sidewall and is arranged in such a way that, in the substantially median portions of the sidewall, the threads of the reinforcing structure having different axial positions so as to form a succession of substantially regular corrugations along the circumferential path, thus forming a corrugated circumferential thread profile.

Abstract: A tire carcass to be used with any type of tire is shown herein. A tire carcass includes a first ply portion, a second ply portion, each ply portion having an inner sidewall ply, an outer sidewall ply, a first end, a second end, and a bead core, a bridge portion, wherein the first ends of the ply portions are separated by the bridge portion, and at least two bridge plies, wherein the bridge plies span the bridge portion, wherein each of the bridge plies have a first end and a second end.

Abstract: An improved tire cord fabric is provided that has a main portion and a tabby. The tire cord fabric is comprised of warp cords oriented in the longitudinal direction and weft yarns oriented in the lateral direction. The warp cords are used in reinforcing pneumatic tires. In the tabby, the weft yarns have an increased count per inch versus the count per inch of the weft yarns in the main portion of the fabric. The weft yarns in the tabby are preshrunk prior to weaving of the tire cord fabric.

Abstract: A pneumatic tire for use on aircraft has a tread, a crown reinforcement, and a radial carcass reinforcement having at least one axially inner ply of textile cords wound around a pair of bead cores, at least one axially inner ply being wound around the bead core in each bead from inside to the outside forming outside turn-ups and at least one axially outer ply of textile cords extending from bead to bead along the turn-ups of the at least one axially inner ply. The at least one axially inner ply or at least one axially outer ply has merged cords having a percent elongation at break of 12% to less than 20% and a break strength greater than 1050 N with a linear density of greater than 9,000 dtex. Merged cord reinforcement is preferably used in the ply layers or strips of the crown reinforcement as well.

Abstract: A pneumatic tire comprises a tread-reinforcing band made of at least one spirally wound cord, wherein 2 the band cord consists of materially identical high-strength high-modulus organic filaments, and the band cord is formed by first twisting each of filament bunches, subjecting the first twisted bunches to a dip-and-stretch treatment, and then twisting the treated bunches together, whereby the load-elongation curve of the band cord comprises a low-modulus zone and a high-modulus zone whose boundary point is in an elongation range of from 1 to 7%, and the ratio EH/EL of a nominal elastic modulus EH of the high-modulus zone and a nominal elastic modulus EL of the low-modulus zone is in a range of from 2.0 to 10.0. Therefore, high-modulus aramid cords, PEN cords and the like can be used to reduce the tire weight.

Abstract: A carcass reinforcement for a tire which is intended to bear heavy loads, comprising a composite fabric which comprises a rubber composition of reduced hysteresis and metal cables reinforcing the composition. The elastomeric matrix thereof comprises natural rubber or a synthetic polyisoprene in a majority proportion, and a reinforcing filler comprising a carbon black which meets all of the following conditions: (i) 45?CTAB specific surface area in m2/g (in accordance with Standard ASTM D3765-80)?70, (ii) 45?BET specific surface area in m2/g (in accordance with Standard ASTM D4820-93)?70, (iii) 45?iodine adsorption index IA in mg/g (in accordance with Standard ASTM D1510-81)?70, (iv) ratio (BET surface area/index IA)?1.07, (v) 115?DBP structure value in ml/100 g (in accordance with Standard ASTM D2414-93)?170, (vi) 85 nm?Stokes diameter dst in nm?145, where dst is the diameter of aggregates corresponding to the maximum frequency of the Stokes diameters in a distribution of aggregates, and (vii) D50/dst?0.

Abstract: The invention relates to a tire for heavy vehicle of the agricultural or construction type, comprising a carcass reinforcement radially surmounted by a crown reinforcement, itself topped radially by a tread, said tread being joined to two beads by means of two sidewalls. According to the invention, the tire is such that the form ratio H/S is less than 0.75 and the ratio of the width of the tread A to the height of deflection B of the crown is greater than 17.

Abstract: The present invention relates to a metal cable usable for reinforcing a carcass reinforcement for a tire, such as a heavy-vehicle tire, to a composite fabric usable as a ply for such a carcass reinforcement, to a carcass reinforcement comprising this fabric and to a tire incorporating this carcass reinforcement. A metal cable according to the invention comprises a textile wrap, and is such that said wrap is formed of an aromatic thermotropic polyester or polyester amide. A composite fabric according to the invention is such that it comprises a rubber composition which is reinforced by said cables. A tire according to the invention has its carcass reinforcement comprising said composite fabric.

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

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

Abstract: A strip of tire ply stock is reinforced with steel cords wherein the steel cords are constructed of high strength wire filament having at least a tensile strength of ?2000×D+4400 MPa where D is the filament diameter in mm. Tires are constructed with the ply stock in the belt and/or carcass.

Abstract: A pneumatic tire comprises a cord-reinforced layer such as carcass, belt, bead reinforcing layer which is made of metallic cords, each metallic cord is made up of six to twelve metallic filaments whose diameter is in a range of from 0.15 to 0.45 mm, the metallic filaments include waved filaments and unwaved filaments, each waved filament is two-dimensionally waved at a wave pitch and wave height before twisted, the wave pitch is in a range of from 5.0 to 35.0 times the diameter of the filament, and the wave height is in a range of from 0.2 to 4.0 times the diameter of the filament, and the metallic filaments are twisted together into the cord at a twist pitch of from 10 to 40 mm so that the two-dimensionally waved filaments are each subjected to a certain rotation around its axial.

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

Abstract: A rubber-coated fabric 10 for a tire, obtained by rubber-coating a rattan blind woven stuff 14 in which wefts 11 and warps 12 made of tire cords 13 are woven into a rattan blind form. The wefts 11 have a break elongation of 4 to 30% and a break strength of 3 to 15 N.

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

Abstract: A pneumatic tire includes a body having a plurality of main body cords. The tire includes an upper section above the maximum section width and a lower section below the maximum section width. The modulus of the body cords is configured to be larger in the lower section than in the upper section. This modulus ratio decreases the rolling resistance of the tire. The increased modulus in the lower section is achieved by providing intermediate body cords disposed between the main body cords. In another embodiment, the increased modulus is achieved by changing the material and/or size of the cords in the lower section.

Abstract: A pneumatic tire, comprising a carcass having a carcass ply_(6a) with a folded part (6b) folded up around a bead core (5) from the axial inside to the axial outside of the tire continuously fitted to a ply body part (6a) installed across the bead cores (5) and (5), wherein the intermediate elongation (Es) of a carcass cord in the ply body part (6a) at the maximum width position (M) is smaller than the intermediate elongation (Eb) thereof at the height position (B) of the bead core at the radial outermost end of the tire.

Abstract: A method for making a metallic cord made up of one or more metallic wires comprises: making at least two layers of at least two metallic elements including copper and zinc on the surface of a base wire; heating the layers to cause the metallic elements thermodiffusion to transform into a primary alloy layer; making a layer of copper on the primary alloy layer; drawing the wire provided with the primary alloy layer and outer copper layer into a metallic wire through dies so that the outer copper layer is diminished during passing through the dies, and a secondary alloy layer is formed as a result of transformation of the primary alloy layer and the outer copper layer which is caused by frictional heat during passing through the dies.

Abstract: There is provided a pneumatic tire having an aspect ratio of not less than 60 and considerably improving run flat durability as compared with the conventional type of the run flat tire, wherein at least one cushion rubber layer having a loss tangent lower than a loss tangent (tan ?) of a coating rubber for cords of a carcass ply is arranged between an end portion of a belt and a reinforcing rubber layer in a shoulder region and between mutually adjacent tire constitutional members. And also, when the carcass is comprised of plural plies, at least one ply is separated off in a zone beneath the belt, whereby the ride comfort against vibrations can be more improved.

Abstract: A strip of tire ply stock is reinforced with steel cords wherein the steel cords are constructed of high strength wire filament having at least a tensile strength of ?2000×D+4400 MPa where D is the filament diameter in mm. Tires are constructed with the ply stock in the belt and/or carcass.

Abstract: A multi-layer cable having an unsaturated outer layer, usable as a reinforcing element for a tire carcass reinforcement, comprising a core of diameter d0 surrounded by an intermediate layer (C1) of four or five wires (M=4 or 5) of diameter d1 wound together in a helix at a pitch p1, this layer C1 itself being surrounded by an outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2, N being less by 1 to 3 than the maximum number Nmax of wires which can be wound in one layer about the layer C1, this cable having the following characteristics (d0, d1, d2, p1 and p2 in mm): 0.08<d0<0.28;??(i) 0.15<d1<0.28;??(ii) 0.12<d2<0.25;??(iii) for M=4: 0.40 <(d0/d1)<0.80;??(iv) for M=5: 0.70<(d0/d1)<1.10; 4.8?(d0+d1)<p1<p2<5.6?(d0+2d1+d2);??(v) the wires of layers C1 and C2 are wound in the same direction of twist.

Abstract: A pneumatic radial tire wherein both end portions of at least one layer of a carcass layer are turned up around right and left bead cores from the inside to the outside of the tire, and at least two layers of belt layers formed by arranging reinforcing cords in such a fashion that their inclining directions with respect to a tire circumferential direction cross one another in mutually opposite directions between the layers are disposed on the outer circumferential side of the carcass layer of a tread portion. A carcass strength coefficient K defined by the formula (1) in the specification is 0.15 to 0.35 N/mm·kPa at portions on the tread portion center side of positions P which are away by 10% of a belt width of a belt layer having the second greatest width from both edges thereof towards its inside, and is 0.5 N/mm·kPa at portions from the positions P to the bead portions.

Abstract: A metallic cord is composed of metallic filaments gathered together, the metallic filaments include at least one patterned filament which is, before gathered together, two-dimensionally waved so as to have a wave form defined by plural kinds of cycles different from each other in respect of the wave length and/or wave height. A pneumatic tire includes the metallic cords as its carcass cords.

Abstract: A pneumatic radial tire comprises a innerliner, a carcass, a belt, one or more cap layers and a tread, in which the belt is comprised of at least two belt layers each containing rubberized metal or organic fiber monofilament cords, and a rubber gauge between the monofilament cords located in the adjacent belt layers is made 1.5-5 times of a diameter of the monofilament cord.

Abstract: A bias tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions each with a bead core therein, a carcass extending between the bead portions and comprising two cross plies of cords, and a tread rubber disposed radially outside a crown portion of the carcass to define a tread face, wherein the loss tangent of the tread rubber is in a range of 0.40 to 0.60 under a temperature of 50 deg.C., the distance between the tread rubber and the adjacent cords of the radially outermost carcass ply is at most 1.0 mm, and the two cross plies include at least one ply of PEN cords made of polyethylene 2,6 naphthalate fibers twisted together.

Abstract: A composite cord is provided which is simple in manufacture, highly productive, less costly, and improved in rubber penetration. The composite cord has a 1×n construction (n is an integer from 3 to 12) with 2 to 11 metallic filaments and 1 to 5 polymer fibers having a melting point of 50 to 200 degrees twisted together. The pneumatic tire employing this composite cord for its reinforcing element is restricted in rust formation and improved in strength retention.

Abstract: A multi-layer cable having an unsaturated outer layer, comprising a core (C0) of diameter d0 surrounded by an intermediate layer (C1) of six or seven wires (M=6 or 7) of diameter d1 wound together in a helix at a pitch p1, surrounded by an outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2, N being less by 1 to 3 than the maximum number Nmax of wires which can be wound in one layer about the layer C1, this cable has the following characteristics (d0, d1, d2, p1 and p2 in mm): (i) 0.14<d0<0.28; (ii) 0.12<d1<0.25; (iii) 0.12<d2<0.25; (iv) for M=6: 1.10<(d0/d1)<1.40; for M=7: 1.40<(d0/d1)<1.70; (v) 5&pgr;(d0+d1)<p1<p2<5&pgr;(d0+2d1+d2); (vi) the wires of layers C1 and C2 are wound in the same twist direction.

Abstract: A multi-layer cable having an unsaturated outer layer, usable as a reinforcing element for a tire carcass reinforcement, comprising a core of diameter d0 surrounded by an intermediate layer (C1) of four or five wires (M=4 or 5) of diameter d1 wound together in a helix at a pitch p1, this layer C1 itself being surrounded by an outer layer (C2) of N wires of diameter d2 wound together in a helix at a pitch p2, N being less by 1 to 3 than the maximum number Nmax of wires which can be wound in one layer about the layer C1, this cable having the following characteristics (d0, d1, d2, p1 and p2 in mm):

Abstract: The invention improves rubber permeability while making a cord diameter compact. A metal cord is constituted by a layered structure having a core comprising totally 6 to 12 filaments sectioned into 1 to 4 filament bundles, and a sheath comprising 8 to 15 filaments arranged around the core. Each of the filament bundles includes a waved filament modeled in a two-dimensional wave shape and a non-waved filament, in a state before being bundled. The core makes the wave of the waved filament three-dimensional within the core by applying torsion to each of the filament bundles.

Abstract: Tire for vehicle wheels, comprising metallic reinforcing cords made of a single strand of elementary filaments preformed by sinusoidal waving and wound together. Said metallic cords show a value of the integral of the breaking stress not lower than 5000 J/m3.

Abstract: A pneumatic tire comprises a cord-reinforced layer such as carcass, belt, bead reinforcing layer which is made of metallic cords, each metallic cord is made up of six to twelve metallic filaments whose diameter is in a range of from 0.15 to 0.45 mm, the metallic filaments include waved filaments and unwaved filaments, each waved filament is two-dimensionally waved at a wave pitch and wave height before twisted, the wave pitch is in a range of from 5.0 to 35.0 times the diameter of the filament, and the wave height is in a range of from 0.2 to 4.0 times the diameter of the filament, and the metallic filaments are twisted together into the cord at a twist pitch of from 10 to 40 mm so that the two-dimensionally waved filaments are each subjected to a certain rotation around its axial.

Abstract: Disclosed is a radial tire for an automobile, in which lyocell having a dry/wet tenacity ratio S1/S2 of 1.2 to 1.6, a tensile strength at high temperature/a tensile strength at room temperature ratio S3/S4 of more than 0.8, and a shrinkage E of less than 0.01 is applied to a carcass part, thereby a resistance to fatigue and dimensional stability in running of a tire are improved.

Abstract: The tire (70) of the invention incorporates a carcass ply cord material (93) with variable modulus of elasticity to provide an active sidewall structure (82a, 82b). The variable modulus cord material is incorporated in the axially outwardmost ply (90) of a carcass (80) having two plies (88, 90) separated by elastomeric inserts (89a, 89b) in the sidewalls (82a, 82b). The outer ply cord material (93) provides an increased modulus of elasticity with an increase in elongation. The inner ply cords (91) have a modulus that substantially exceeds that of the outer ply cords (93) under normal loads in the inflated mode. Thus, the inner ply (88) dominates the structural response of the sidewalls (82a, 82b) at normal loads in the inflated mode. Under severe sidewall deflection, such as when the tire is uninflated, the outer ply cord (93) is elongated, increasing its modulus of elasticity and thus, shifting the load from the axially inwardmost ply (88) to the axially outwardmost ply (90).

Abstract: A strip of tire ply stock is reinforced with steel cords wherein the steel cords are constructed of high strength wire filament having at least a tensile strength of −2000×D+4400 MPa where D is the filament diameter in mm. Tires are constructed with the ply stock in the belt and/or carcass.

Abstract: A pneumatic tire comprises a carcass comprised of at least one carcass ply containing a steel cord(s) arranged at a cord angle of 70-90° with respect to an equatorial plane of the tire and toroidally extending between a pair of bead cores and turned up around the bead core inward or outward in a radial direction to form a turnup portion, wherein a wrap part wrapping on a peripheral face of the bead core therealong is formed in the turnup portion of the carcass ply.

Abstract: A strip of tire ply stock is reinforced with steel cords wherein the steel cords are constructed of high strength wire filament having at least a tensile strength of −2000×D+4400 MPa where D is the filament diameter in mm. Tires are constructed with the ply stock in the belt and/or carcass.

Abstract: A pneumatic tire for passenger cars has a tread and left and right beads, the beads each having a bead core embedded therein with a bead filler disposed on the outer circumferential side of the bead core, at least one carcass ply being arranged to extend between the beads, the carcass ply having reinforcing cords which extend in a width direction of the tire and are aligned at a predetermined interval along a circumferential direction of the tire, and two belt plies being disposed on the outer circumferential side of the carcass ply in the tread. An average of residual strain of the reinforcing cords of an innermost carcass ply is set to −10% to 5% in each side region located between an outer circumferential end of the bead filler and an end of an overlapping portion of the two belt plies.

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: High modulus reinforcement is used to make a radial ply pneumatic tire having only one carcass ply, i.e. a monoply tire. Poly-ethylene naphthalate (PEN) reinforcement is prepared in a manner that provides sufficient strength whereby the monoply tire can be made having reduced weight (as compared to a two ply tire) while having comparable durability, some improved handling, reduced rolling resistance, and improved flatspotting properties.

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 pneumatic radial ply passenger tire (10) having a tread (12), a casing with two sidewalls (20), two radial plies (38, 40) extending from and wrapped about two annular beads (26) and a belt reinforcement structure (36) located radially between the tread and the plies. Inner ply (38) is reinforced with essentially inextensible metal cords and is designed to carry a compressive load during runflat operation. Outer ply (40) is reinforced with organic-fiber cords designed to withstand tensile stresses during runflat operation. A circumferentially deployed insert (42) is disposed between the inner and outer radial plies (38, 40) in each sidewall (20) adjacent to the shoulder of the tread. The metal cords (41) of inner ply (38) have compressive-load-hearing capacity which reduces the mass of the insert material (42). The metal cords (41) also have thermal conductivity properties that dissipate heat buildup from both ply (38) and insert (42).

Abstract: There is provided a pneumatic tire having an aspect ratio of not less than 60 and considerably improving run flat durability as compared with the conventional type of the run flat tire, wherein at least one cushion rubber layer having a loss tangent lower than a loss tangent (tan &dgr;) of a coating rubber for cords of a carcass ply is arranged between an end portion of a belt and a reinforcing rubber layer in a shoulder region and between mutually adjacent tire constitutional members. And also, when the carcass is comprised of plural plies, at least one ply is separated off in a zone beneath the belt, whereby the ride comfort against vibrations can be more improved.

Abstract: The present invention is directed to a hybrid cabled cord comprising: at least two yarns having different properties and an unbalanced configuration wherein the hybrid cabled cord has improved tensile strength retention. In a preferred embodiment one of the two yarns comprises polyethylene terephthalate and the second of at least two yarns comprises polyethylene naphthalate and the coring level is between about 3% to about 15%. The present invention is also directed to a process for making a hybrid cabled cord comprising the steps of supplying at least two yarns having different properties to a direct cabler, and cabling the at least two yarns using the direct cabler to achieve a hybrid cabled cord having a coring level which is not zero. The present hybrid cabled cord may be used in tire cord for rubber reinforcement in passenger car tires, van tires, light truck tires, or motorcycle tires.

Abstract: A pneumatic tire comprises a carcass comprised of at least one carcass ply containing a steel cord(s) arranged at a cord angle of 70-90° with respect to an equatorial plane of the tire and toroidally extending between a pair of bead cores and turned up around the bead core inward or outward in a radial direction to form a turnup portion, wherein a wrap part wrapping on a peripheral face of the bead core therealong is formed in the turnup portion of the carcass ply.

Abstract: The present invention relates to a pneumatic tire for a bicycle, especially a mountain bike, the tire having on each respective left and right side a bead each comprising a bead core. A carcass, preferably a diagonal carcass, which has at least one ply of cords, is wound about each bead core. The tire of the present invention also comprises sidewalls extending radially from the axial edges of its tread which each have a textile sheet structure for wear protection on the outer sides of the carcasses.

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: A bias tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions each with a bead core therein, a carcass extending between the bead portions and comprising two cross plies of cords, and a tread rubber disposed radially outside a crown portion of the carcass to define a tread face, wherein the loss tangent of the tread rubber is in a range of 0.40 to 0.60 under a temperature of 50 deg.C., the distance between the tread rubber and the adjacent cords of the radially outermost carcass ply is at most 1.0 mm, and the two cross plies include at least one ply of PEN cords made of polyethylene 2,6 naphthalate fibers twisted together.

Abstract: A pneumatic vehicle tire of radial construction, especially for automobiles, is provided. The tire has a profiled tread strip, a belt structure of at least two belt plies, bead regions having bead cores, and a carcass having load-carrying members of steel cord. In the tire the carcass forms a C-ply construction and contains steel cords of three or five steel filaments, which all have the same diameter of 0.12 to 0.1 5mm.

Abstract: An as-spun monofilament of thermotropic aromatic polyester(amide), which satisfies the following conditions: D≧40; Te>45; &Dgr;L≧0, D being its diameter (in &mgr;m), Te its tenacity (in cN/tex) and &Dgr;L its variation in length (in %) after 2 minutes at 235±5° C. at an initial tension of 0.2 cN/tex. A spinning process for obtaining such a monofilament, including, upon emergence from the spinneret, of structuring the flow of the polymer by stretching in a layer of gaseous fluid for a predetermined time which is a function of the diameter D, before thermally quenching the flow of polymer thus structured in a liquid, so as to solidify it.

Abstract: A pneumatic tire includes a body having a plurality of main body cords. The tire includes an upper section above the maximum section width and a lower section below the maximum section width. The modulus of the body cords is configured to be larger in the lower section than in the upper section. This modulus ratio decreases the rolling resistance of the tire. The increased modulus in the lower section is achieved by providing intermediate body cords disposed between the main body cords. In another embodiment, the increased modulus is achieved by changing the material and/or size of the cords in the lower section.