Abstract: A pneumatic radial ply tire 100 for use on aircraft has a radial reinforced carcass 20 having at least one axially inner ply 2A, 2B, 2C and 2D of textile cords 21 wound around a pair of bead cores 33. The improved bead structure 30 has a flipper 50 having an axially inner leg LI and axially outer leg LE. The ends LI, LE of the flippers 50 are above the bead core height Bh and below the apex A of an elastomeric strip 40 satisfying the relation Bh<LE<0.7D and Bh<LI<0.7D. Additionally, the tire carcass 20 has at least one axially outer ply 2E, 2F of textile cords 21 extending from bead 30 to bead 30 along the turn-ups 20A, 20B, 20C and 20D of the axially inner plies 2A, 2B, 2C and 2D. The plies 21 are closely spaced along the natural ply path.

Abstract: A pneumatic tire which comprises a tread portion, a pair of bead portions adapted to a wheel rim, a pair of sidewall portions therebetween, at least one of the sidewall portions provided with an axially protruding rim protector, the rim protector extending continuously in the tire circumferential direction so as to form an annular axially outer surface extending continuously in the tire circumferential direction and a radially inner surface extending radially inwardly from said annular axially outer surface towards the adjacent bead portion, wherein the radially inner surface is provided along the tire circumferential direction with at least one recess having a depth of from 0.5 to 7.0 mm.

Abstract: A pneumatic tire having an aspect ratio of not less than 60 comprises a radial carcass of one or more plies, a belt, a bead filler rubber and a rubber reinforcing layer of substantially a crescent shape in section extending from a position near to a bead core to a position near to a tread end along an inner surface of an innermost carcass ply, wherein at least one rubber protection sheet being relatively soft is disposed between the bead filler rubber and the carcass ply surrounding it and/or between the rubber reinforcing layer and the carcass ply nearest thereto.

Abstract: The invention relates to a novel tire having beads of a specified structure. In particular, the tire, when viewed in meridian section, has a radial carcass reinforcement and a bead of specified structure. The bead features a reinforcement ring that is able to move axially. The tire also features structures that are responsive to axial movement of the reinforcement ring, which modify clamping of the bead on its rim causing the clamping to increase with increasing tension of the carcass reinforcement.

Abstract: A tire wherein the reinforcing cords of the carcass, in the part situated between the anchoring zone of the carcass and the sidewall, are in contact with at least one layer of cushion compound having a high modulus of elasticity on the axially outer side and a low modulus of elasticity on the axially inner side and in the sidewall.

Abstract: A tire, designed to carry heavy loads, having a radial carcass reinforcement formed of at least one ply of inelastic reinforcing elements and anchored in each bead to a bead wire so as to form a turn-up whose end is a radial distance HRNC away from the base of the bead, each bead being reinforced by at least two additional reinforcement armatures, at least one first armature being formed of radial reinforcement elements and at least one second armature being formed of elements that make with the circumferential direction an angle &agr; such that 0°≦&agr;≦45°, the first reinforcement armature being formed of radial elements and being wrapped around the bead wire outside the carcass reinforcement while the second armature is not wrapped around the said bead wire.

Abstract: A pneumatic tire comprises a carcass made from at least one cord array comprised of many arch portions of a cord extending between a pair of bead portions in a meridional direction and arranged over a full circumference of the tire at an equal interval P in a circumferential direction of the tire and many circumferential portions of the cord alternately arranged in the bead portions, each connecting ends of adjacent arch portions to each other in the bead portion and extending substantially in the circumferential direction. In this case, the cord array is arranged at n layers (n is an integer of 2 or more) while offsetting these layers by a distance L obtained by dividing the interval P by n in the circumferential direction. Further, the bead wire reinforcing layer is arranged outward from the overlap region of the circumferential portions in the radial direction so as to sandwich the cord array from both sides thereof.

Abstract: A tire comprising a crown, two sidewalls and two beads, a carcass reinforcement anchored in each of the beads and a crown reinforcement. The carcass reinforcement comprises at least two circumferential alignments of first reinforcing threads of high elasticity modulus, each circumferential alignment of the first reinforcing threads being, within each bead, bordered axially inwardly and axially outwardly by second reinforcing threads, oriented substantially circumferentially, of a modulus greater than or equal to that of the first reinforcing threads. The first reinforcing threads and second reinforcing threads are separated by a layer of mix of very high elasticity modulus.

Abstract: A tire comprising a crown, two sidewalls and two beads, a carcass reinforcement anchored in each of the beads and a crown reinforcement. The carcass reinforcement comprises at least two circumferential alignments of first reinforcing threads of high elasticity modulus, each circumferential alignment of first reinforcing threads being, within each bead, bordered axially inwardly and axially outwardly by second reinforcing threads oriented substantially circumferentially of a modulus greater than or equal to that of the first reinforcing threads. The first reinforcing threads and the second reinforcing threads are separated by a layer of mix of very high elasticity modulus. The outer surface of each bead comprises a seat, a frustoconical wall of substantially radial orientation radially inwardly adjacent to a wall section in the shape of an arc of a circle EF of center C which center C is arranged axially outwardly relative to the bead.

Abstract: A tire comprising a crown, two sidewalls and two beads, a carcass reinforcement anchored in each of the beads and a crown reinforcement. The carcass reinforcement comprises at least two circumferential alignments of first reinforcing threads of high elasticity modulus, each circumferential alignment of the first reinforcing threads being, within each bead, bordered axially by second reinforcing threads oriented substantially circumferentially. The first reinforcing threads and the second reinforcing threads are separated by a layer of mix of very high elasticity modulus. The second reinforcements are arranged in a spiral and formed of monofilaments or unit threads of steel.

Abstract: A tyre for a vehicle wheel includes a carcass structure, a belt structure, a tread band, and at least one pair of sidewalls. The carcass structure includes at least one circumferential centering ridge jutting out from a crown portion of the carcass structure. Each bead of the tyre includes a rest surface defining, in a direction away from an equatorial plane of the tyre, a profile converging toward the rotation axis of the tyre. A rim for a tyre includes a base body and two seats. Each seat defines an abutment surface facing radially away from a rotation axis of the rim and includes a frustoconical configuration converging away from a median diametrical plane of the rim. The base body further includes at least two opposite radial shoulders disposed to abut against the at least one centering ridge. A vehicle wheel, including the tyre and the rim, is also disclosed.

Abstract: A pneumatic tire comprising a rubber member containing a short fiber (A′) formed by the fibrillation of a short fiber (A) whose cross section takes a sea-island structure essentially composed of at least two polymers.

Abstract: A wheel assembly includes a tire, having each bead seat angle in the range of 10 degree to 12 degree with respect to the axis of rotation, preferably 11 degree, and an aspect ratio of less than 60%, and a wheel rim, having a circumfurential well and a bead support surface angle also in the range of 10 degree to 12 degree, each bead support surface terminating in an upstanding flange overlapping a radially inner portion of the tire to support the sidewall of the tire. The flanges may be part circular in cross section defining a segment of approximately 135 degree, the radius of curvature being greater than 0.5 inches and preferably 0.75 inches.

Abstract: A tire with at least one component of a rubber composition which contains oriented exfoliated platelets derived from an intercalated clay. Such tire component may be, for example, a rubber/cord laminate and, optionally, a sidewall insert and, optionally, an apex.

Abstract: A pneumatic tire has such a bead portion structure that at least two bead wire structural bodies, each being obtained by spirally winding a bead wire(s) so as to continuously extend in a circumferential direction, are disposed in a bead portion so as to sandwich a carcass ply or enclose with the carcass ply, in which an outer end of at least one of the bead wire structural bodies in a radial direction is located on a position corresponding to a rim line or outward therefrom.

Abstract: A tire having at least one bead seat inclined towards the outside and a radial carcass reinforcement (1) wound within said bead around a bead wire (2) from the heel to the toe of the bead B to form an upturn (10), the edge of which, viewed in meridian section, is located on the radially outer face (31) of a profiled element (3) of rubber mix. The profiled element is located axially and externally adjacent to the bead wire (2), and has, viewed in meridian section, the shape of a drop of water with an apex A located beneath the section of the bead wire (2), and a Shore A hardness greater than the Shore A hardness(es) of the rubber mixes (6, 7) located axially and radially above the bead wire/profiled element assembly. The carcass reinforcement upturn (10) is extended by a reinforcement armature (11) which surrounds the profiled element (3).

Abstract: A tire for mounting on a rim, the flanges of which have rounded rim hooks, has at least two beads and a carcass reinforcement formed of at least one ply of reinforcement elements. Each bead is devoid of a bead wire. The carcass reinforcement has in each bead a meridian profile which is curved axially and radially from the outside to the inside to form an axially inner edge located at an angle open axially and radially towards the inside. The carcass reinforcement is reinforced in each bead at least radially to the outside and axially to the inside, firstly by at least one first continuous additional layer, formed of inextensible circumferential reinforcement elements and secondly by at least one second continuous additional layer, formed of inextensible, radial reinforcement elements the two additional layers having meridian profiles substantially parallel to the meridian profile of the carcass reinforcement in the bead.

Abstract: A method of assembling a tire carcass comprising applying a cord reinforced rubber ply to a toroidal-shaped former such that the edges of the ply are located on radially inner portions of the former, placing a circular bead component adjacent to each edge and stitching each ply edge to its said circular bead component to secure the ply edge in the region of the tire bead.

Abstract: A pneumatic tire comprising a rubber member containing a short fiber (A′) formed by the fibrillation of a short fiber (A) whose cross section takes a sea-island structure essentially composed of at least two polymers.

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 a body cord insert wrapped around the bead core and bead filler. The ends of the body cord insert are disposed against each other so that the entire bead filler is surrounded. The body cord insert extends substantially over the entire lower section of the tire.

Abstract: A tire for heavy loads, having an inextensible radial carcass ply anchored to a bead wire to form an upturn, the end of which is located at a radial distance from the base of the bead. Each bead is reinforced by at least two additional reinforcement armatures, one armature formed of radial inextensible metallic reinforcement elements and a second armature formed of metallic elements forming an angle with the circumferential direction, the first armature being formed of at least one ply wound around the anchoring bead wire on the inside of the carcass reinforcement to form two strands, such that the axially inner strand, between the radially lower end of its radially upper edge parallel to the meridian profile of the carcass reinforcement and its point of tangency with the anchoring bead wire, follows a rectilinear trace referred to as “shortest-path”.

Abstract: A tire having at least a first bead, the seat of which has a generatrix whose axially inner end lies on a circle of diameter greater than the diameter of the circle on which the axially outer end is located, and a radial carcass reinforcement winding within each bead around at least one heel reinforcement element, passing from the inside to the outside to form an upturn, the meridian profile of the carcass reinforcement, when the tire is mounted on its operating rim and inflated to the recommended pressure, having a constant direction of curvature in the first bead and a sidewall extending it radially, and having a tangent TT′ to the point of tangency T of the carcass reinforcement profile with the annular element of the first bead which forms with the axis of rotation an angle &phgr; which is open towards the outside and is greater than 45°, wherein, viewed in meridian section, at least the sidewall extending the first bead comprises a reinforcing profiled element having, viewed in section, substan

Abstract: A tire has a radial carcass reinforcement having a bead, the seat of which is inclined towards the outside, the bead heel axially to the inside and reinforced by at least one reinforcement element, the bead toe axially to the outside and having a profiled element of rubber mix in the form of a wedge defined by two sides, the mix having a Shore A hardness greater than the Shore A hardness of the rubber mixes radially above, wherein the reinforcement winds around the annular element to form an upturn, the end of which is located axially to the outside of a straight line P2 perpendicular to the axis of rotation and passing through the center of gravity of the meridian section of the element, and axially to the inside and radially to the outside of the straight line P1 supporting the radially outer side of the profiled element.

Abstract: A tire with radial carcass reinforcement having beads with a heel portion on an axially inner side and a toe portion on an axially outer side includes two carcass reinforcement plies for tension in higher sidewall tires. The bead includes at least one bead wire coated with a rubber mix, a wedge formed of a rubber mix disposed axially outward of the at least one bead wire, and at least one rubber filler located axially and radially outward of the bead wire and wedge. The wedge is defined by two sides extending at an acute angle axially from an apex A located beneath the section of the at least one bead wire, the rubber mix forming the wedge having a Shore A hardness of at least 65 and greater than the Shore A hardness of the at least one rubber filler.

Abstract: In a pneumatic tire, a cord spacing between an axially outer cord layer and an axially inner cord layer such as: a turnup portion and a main portion of a carcass ply; or a bead reinforcing cord layer and a carcass ply turnup portion, is increased from the radially inside to the outside of the tire to improve the durability of the bead portion.

Abstract: A tire having a radial carcass reinforcement of low H/S ratio, at least one bead provided with an axially outer protuberance, the maximum axial width of which is greater than the space taken up by the rim, characterized in that the protuberance is provided with incisions of a width other than zero, of a depth of at most 5 mm and arranged circumferentially parallel to each other.

Abstract: A tire P, which is intended to be mounted on a rim, the seats of which form an angle with the axis of rotation of between 0° and 6°, and comprises a radial carcass reinforcement (1) anchored within each bead B to a bead wire (2) so forming an upturn (10), said bead wire (2) being radially surmounted, axially between the main portion of the reinforcement (1) and its upturn (10), by at least one rubber mix profile (3) substantially triangular in form and of an elevated Shore A hardness, wherein the meridian profile of the axially outer surface of each bead B, exhibiting an abrupt discontinuity of curvature, is combined with the presence above the bead wire of a rubber mix profile (3) of elevated hardness, said profile (3) being axially in contact over its entire height with the upturn (10) of the carcass reinforcement (1) and separated from the main portion of said reinforcement (1) by a low hardness rubber mix profile (4), while a third profile (5), axially to the outside of the upturn (10), consists o

Abstract: A tire having a radial carcass reinforcement, anchored in each bead to an anchoring bead wire to form an upturn, characterized in that a profiled member of vulcanized rubber mix is arranged axially to the outside of the upturn of the carcass reinforcement, the secant modulus of elasticity in tension of which, measured for a relative elongation of 10%, is very much greater than the moduli of the other mixes forming the bead, the main part of the carcass reinforcement having a substantially rectilinear meridian profile between its point of tangency to the anchoring bead wire and a point A located at a radial distance HA from the base D of the beads of between 35% and 65% of the radial distance HE between the points of maximum axial width of the carcass reinforcement and said base D.

Abstract: A pneumatic tire comprises: a carcass ply extending between bead portions and including a topping rubber layer, the topping rubber layer facing the inside of the tire and made of a butyl rubber compound containing at least 10 parts by weight of butyl rubber or butyl rubber derivative; and a belt disposed radially outside the carcass in the tread portion, the belt comprising at least one ply of monofilament cords laid at an angle of from 10 to 40 degrees with respect to the circumferential direction of the tire, and each of the monofilament cord consisting of a single filament. The belt further comprises one ply of multifilament cords or one ply of monofilament cords. The height of a bead apex, which is disposed between a carcass ply turnup portion and main portion in each bead portion, can be reduced into a range of from 10 to 20 mm, and in this case, the carcass ply turnup portion is extended radially outwardly beyond the radially outer end of the bead apex so as to adjoin the carcass ply main portion.

Abstract: A pneumatic tire comprises at least one carcass ply of steel cords, in which a wrap part wound on a bead core along its outer peripheral face is disposed in a turnup portion of the carcass ply and at least one wire chafer wound around the bead core from a main body portion of the carcass ply toward the turnup portion thereof in a widthwise direction is embedded in the bead portion or the main body portion of the carcass ply is adequately regulated so as to enhance lateral stiffness of the bead portion.

Abstract: A tire to be mounted on a rim of axial width L, with flanges with rounded rim hooks, having a tread joined to two beads (3) by two sidewalls (2) and at least one carcass reinforcement (1) formed of at least one ply of reinforcement elements, characterized in that each bead (3) is without a bead wire, the carcass reinforcement (1) having in each bead (3) a meridian profile which is curved axially and radially from the outside to the inside to form an axially inner edge located in an angle a open axially and radially towards the inside, one of the edges of which is parallel to the axis of rotation, the carcass reinforcement (1) being reinforced in each bead (3) at least radially to the outside and axially to the inside by at least one first continuous additional layer (6), of meridian profile substantially parallel to the meridian profile of the carcass reinforcement (1) in the bead (3) and including at least one first section composed of at least one ply (61, 62, 63) of inextensible reinforcement elements form

Abstract: A tire having at least one bead seat inclined towards the outside and a radial carcass reinforcement (1) wound within said bead around a bead wire (2) from the heel to the toe of the bead B to form an upturn (10), the edge of which, viewed in meridian section, is located on the radially outer face (31) of a profiled element (3) of rubber mix. The profiled element is located axially and externally adjacent to the bead wire (2), and has, viewed in meridian section, the shape of a drop of water with an apex A located beneath the section of the bead wire (2), and a Shore A hardness greater than the Shore A hardness(es) of the rubber mixes (6, 7) located axially and radially above the bead wire/profiled element assembly. The carcass reinforcement upturn (10) is extended by a reinforcement armature (11) which surrounds the profiled element (3).

Abstract: A pneumatic tire is disclosed, which comprises: (1) a reinforcing rubber layer made of short fiber reinforced rubber, alternatively (2) a reinforcing rubber layer having hardness set in a range of 90° to 99° of JIS-A hardness, which is arranged in an area of a bead section from a bead toe section along a tire inner wall surface, and wherein a chafer composed a non-metallic fiber cord having a high strength and a high elastic modulus is provided to cover an outer side of the reinforcing rubber layer from the tire inner wall surface to the bead toe area.

Abstract: The pneumatic tire has a single carcass ply reinforced with parallel metallic cords, each cord composed of at least one filament having a tensile strength of at least (−2000×D+4400 MPa)×95%, where D is the filament diameter in millimeters. The turnup portion of the single carcass ply 12 in the bead portion of a pneumatic tire is interposed between the bead core 11 and a toe guard 18, and the radially outer edge of each turnup portion being in contact with the main portion of the carcass ply and extending to an end point 0.5 to 4.0 inches (12.7 to 101.6 mm) radially outward of the bead core as measured along the main portion of the carcass ply of the tire. A toe guard 18 associated with each bead core 11 has a first and second end and each end is disposed directly adjacent to the carcass ply. The first end 18a of the toe guard is located on the axially inner side of the main portion of the carcass ply at a location about 0.4 to 3.

Abstract: The invention relates to pneumatic tires for a motor vehicle comprising a multi-layer carcass. Said multi-layer carcass extends between two bead rings, a set of bracing plies provided between the layers of the carcass and a tire tread, and rubber reinforcement layers arranged in the side wall areas which support the tire when it is deflated. The invention is characterized in that a first rubber reinforcement layer is arranged radially within a first carcass layer and a second rubber reinforcement layer is arranged between the first carcass layer and a second carcass layer. The two rubber reinforcement layers extend from the bead filler area to a position under the edge area of the bracing plies. The two rubber layers vary in thickness across the height of the side walls.

Abstract: In a standard state of a tire, a contour of the tire side surface has a triangular portion projecting outside from a norm arc, which is a arc passing through a maximum width point P1 of a tire and tangentially contacting with the flange, and a portion recessing from the norm arc. The height (h1) of a maximum projecting point of the triangular projecting portion from a bead base line is 0.85˜1.15 times of the height (h0) of the end of a carcass folded portion. The height (h2) of a maximum recessing point of the recessing portion is smaller than the height (h1), and is 0.30˜0.90 times of the height (h0). A maximum boss distance (q1) from the norm arc and the maximum recess distance (q2) from the norm arc are respectively 0.001˜0.040 times of the tire cross section width (W).

Abstract: A pneumatic tire has a bead core consisting of a single core and plural sheath layers formed by helically winding plural sheath wires around the core, in which an end count of sheath wires in an outermost sheath layer is made smaller than an end count at a close-packed state or each sheath wire constituting a second sheath layer from an outermost side is covered with a coating rubber prior to the winding.

Abstract: A tire having two beads and a radial carcass reinforcement, each bead having no anchoring bead wire and being reinforced by an armature including at least two plies turned up over themselves to form four reinforcement layers axially close to one another, the two axially innermost layers being composed of elements parallel to one another from one layer to the next, and the two layers axially at the center being composed of elements crossed from one layer to the next, and the reinforcement layers have their radially outer edges positioned within the bead at different heights such that any annular strip of the reinforcement armature of the bead, having at least two layers of reinforcement elements and located between two parallels to the rotation axis of the tire, is formed of at least two layers of reinforcement elements crossed from one layer to the next.

Abstract: A pneumatic tire of the present invention, which has a bead core buried in a bead portion, in which a ratio dw/D of an inner diameter dw of the bead core to a heel diameter D of a rim, which is specified in a public standard, and a ratio dt/D of a heel diameter dt of the bead portion to the heel diameter D of the rim satisfy the following inequalities: 1.009<dw/D<1.022 0.980<dt/D<0.

Abstract: A pneumatic tire comprises a carcass ply extending between bead portions and turned up around a bead core in each bead portion from the inside to the outside of the tire to form a pair of turned up portions and a main portion therebetween, and a bead reinforcing layer made of steel cords and disposed axially outside the turned up portion in each bead portion, wherein each of the steel cords is made of steel filaments gathered together to have a shape index in a range of from 0.35 to 0.70, the shape index is the total of squared filament diameter of all the steel filaments which total is divided by the product of L1 and L2, wherein, in a cross section at a right angle to the longitudinal direction of the cord, L1 is the dimension of largest measure which occurs in one direction, and L2 is the dimension measured perpendicularly to this direction.

Abstract: A tire (20) comprises a bead core (22) of ferromagnetic material, for example steel wire, around which one or more windings (30a, 30b, . . . , 30n) of conducting wire are wound to form the secondary of an electricity generator of the induction type. The assembly of windings and bead core (22), together with the circuits using the electricity thus generated, is produced as a single unit to be incorporated, together with the bead filler (26), in a bead (28) of the tire, and of one or more magnets fixed with respect to the hub of the wheel or integral with the chassis of a vehicle comprising a wheel (18) fitted with the tire (20), which induce current in the windings. If the magnets are electromagnets (32) supplied with alternating current, the electricity generator operates both when the wheel (18) is rotating and when the wheel is stationary.

Abstract: Formation of a carcass ply takes place by laying down onto a toroidal support (11), a first and a second series of strip-like sections (13, 14) cut to size from a continuous strip-like element (2a) and each comprising longitudinal thread-like elements (15) incorporated into a layer of elastomer material (18). The sections (13) of the first series are sequentially disposed at some circumferential distance from each other, to form side portions (19) to the end flaps (19a) of which primary portions (4a) of respective bead-reinforcing structures (4) are applied. The sections (14) of the second series are each interposed in the space defined between two sections of the first series (13), with the respective end flaps (20a) overlapping the primary portions (4a) of the annular structures (4). Additional portions (24) of the annular structures are applied to the end flaps (20a) of the sections (14) belonging to the second series.

Abstract: The tire of the invention has an optimized path of the outermost carcass designed to maximize the extent of tensile stress in the sidewall and bead portions of the tire. The invention further provides separate reinforcement structures in the bead portion for anchoring the carcass or carcasses in the bead and for retaining the bead on the mounting rim during deflated operation, and said anchoring reinforcement also facilitates the maintenance of the desirable carcass profile.

Abstract: A tire with a form ratio H/S between 0.3 and 0.8 has a carcass reinforcement (1) which is covered radially by a quasi-cylindrical crown reinforcement (3) and which is tangential at T to a holding circle C. The common tangent at T to the circle C and to the meridian profile of the carcass (1) makes an angle &agr; of between +20° and −80° with respect to a line parallel to the rotation axis and passing through the tangency point T. In its portion located between the tangency point T and the point E of greatest axial width, the carcass reinforcement (1) is provided with a reinforcement armature (6) of circumferentially non-extensible elements. Viewed in meridian cross-section and when the tire is fitted and inflated to the recommended pressure, the carcass (1) has a meridian profile consisting of four circular arcs configured to improve the endurance of the tire while improving its rolling resistance.

Abstract: A pneumatic tire comprises at least one carcass ply of steel cords, in which a wrap part wound on a bead core along its outer peripheral face is disposed in a turnup portion of the carcass ply and at least one wire chafer wound around the bead core from a main body portion of the carcass ply toward the turnup portion thereof in a widthwise direction is embedded in the bead portion or the main body portion of the carcass ply is adequately regulated so as to enhance lateral stiffness of the bead portion.

Abstract: A pneumatic tire with an increased load carrying capacity (extended load index) but compatible with conventional, commercially available wheel rims, has a modified carcass ply line. The pneumatic tire (746) has a tread area (712) and a carcass structure (728) including two bead areas (750a,750b), at least one cord-reinforced elastomeric ply (730) extending through sidewalls (726a,726) between the bead areas (750a,750b) and the tread area (712), and a belt structure (718) between the tread area (712) and the carcass structure (728). The tire (746) has bead areas (750a,750b) containing a triangular shaped beads so that the ply line (PL′″) that causes the bead areas to better secure the tire to the rim during high stress conditions.

Abstract: A tire for heavy loads and having beads intended to be mounted on flat rim seats or rim seats which are inclined at 5°, including at least one radial carcass ply formed of inextensible reinforcement elements and anchored in each bead to a bead wire to form an upturn, the end of which is located at a radial distance HRNC from the base of the bead. Each bead is reinforced by at least two additional reinforcement armatures, at least one first armature formed of at least one ply of radial textile reinforcement elements which is located axially to the outside of a second armature formed of at least one ply of inextensible elements forming an angle &agr; with the circumferential direction such that 0°≦&agr;≦45°.

Abstract: A tire for a vehicle wheel, comprising two sidewalls, a crown zone provided on its radially outer portion with a circumferential tread, and a bead arranged in the radially inner portion of each of the sidewalls. Each bead comprises a seat and an outer flange which are intended to come into contact with the rim, the seat having a generatrix, the axially inner end of which lies on a circle of diameter greater than the diameter of the circle on which the axially outer end is located. A carcass-type reinforcement structure extends substantially radially from each of the beads, along the sidewalls, towards the crown zone. Each bead includes a zone for anchoring the carcass-type reinforcement structure in the bead, a bearing zone for the bead against a suitable rim seat, and an intermediate zone, which is provided substantially between said anchoring zone and the bearing zone.

Abstract: A heavy-duty tire, wherein each bead portion (2) is defined by a metal bead bundle (3), about which are turned up a body ply (8), a reinforcing strip (9), and an outer cover layer (10). The outer cover layer is defined by an innerliner (11), an abrasion gum strip (12) which is connected to the innerliner (11) by a splice (14) and is located beneath the innerliner (11), and a sidewall (13). Between the reinforcing strip and the outer cover strip (10), there is inserted a damping strip (21) directly contacting the abrasion gum strip (12) and defined by a mix impermeable to air.

Abstract: A pneumatic radial tire comprises a pair of bead portions, a pair of sidewall portions, a tread portion, a radial carcass toroidally extending between a pair of bead cores and comprised of at least one rubberized ply containing organic fiber cords therein, and a belt superimposed about a crown portion of the carcass and comprised of at least two cross belt layers, wherein the organic fiber cord used in the carcass is a double-twisted polyester cord of 1000-10000 dtex having dynamic moduli at tensions of 200 g and 1500 g within specified ranges.