Abstract: A pneumatic radial tire including a carcass layer having cords embedded therein and arranged perpendicular to an equatorial plane of the tire, and a belt layer including at least one belt ply having a large number of cords embedded therein, the cords including one or more filaments. The cords are disposed radially outside of said carcass layer, arranged substantially in parallel to the equatorial plane of the tire and bent in a wavy or zigzag form. At least those of the cords or filaments located at widthwise outermost locations in the parallel belt ply satisfy the following expression:d.times.a/.lambda..sup.2 .ltoreq.0.005and the cords or filaments in the parallel belt ply satisfy the following expression:a/.lambda..ltoreq.0.1wherein d is a filament diameter of the cords or filaments; .lambda. is a wavelength of the form; and a is one half of the amplitude of the form.

Abstract: A radial ply tire with a steel belt, which comprises a carcass ply turned up around bead cores from the axially inside to the outside thereof and a belt comprising two plies of parallel steel cords disposed radially outside the carcass ply in a tread portion of the tire, wherein the amount of steel included in the radially innermost belt ply per an axial unit width and a circumferential unit length there is less than that in the radially outer belt ply disposed on the radially outside of the innermost belt ply.

Abstract: A pneumatic radial tire having a carcass layer of cords disposed substantially at a right angle to the circumferential direction, and four belt layers sandwiched between the carcass layer and a tread. A pair of belt layers composed of a second and a third layer in the direction of from the carcass to the tread of the tire have cord layers crossing one another respectively at an angle of 10.degree. to 30.degree. to the circumferential direction, fatigue resistance of the cords of the second layer being significantly greater than fatigue resistance of the cords of the third layer.

Abstract: A heavy duty high speed radial tire has a belt composed of at least one aromatic polyamide fiber cord ply, the product T.multidot..sqroot.D of the cable twist number T (turns/10 cm) of the belt cord and the square root of the total denier number D (deniers) of the cord is 2.466.times.10.sup.3 to 3.036.times.10.sup.3, and the elongation E (%) at breakage of the belt cord divided by the total denier number D is 7.78.times.10.sup.-4 to 12.22.times.10.sup.-4.

Abstract: An improved belt structure, particularly suited to steel belted radial truck tires for highway use comprises providing at least one corrugated belt in combination with a flat belt and a hard rubber layer sandwiched therebetween. The corrugations comprise radially inward depending, circumferentially extending depressions in at least one belt. The depressions are radially aligned with the grooves in the tire tread, and thereby form arches to transfer stress away from the portion of the tread underlying the grooves to the solid portion of the tread between grooves. The improvement of the invention is believed to reduce or eliminate excessive wear and nipping of tread corner edges adjacent the tread grooves.

Abstract: An improved reinforcing belt is provided for a pneumatic tire. In one embodiment, a composite belt is formed by bonding together a plurality of resin impregnated plies. Each ply is further formed from cords having a high extensional modulus of elasticity and a high tenacity which reinforce a matrix of semi-rigid resin. Preferably, the resin is cured or formed in situ during the curing of the tire in which the plies are placed. In another embodiment, a structural separator having a high resistance to compression is bonded to and between at least two of the plies.

Abstract: A multi-layer circumferentially reinforced radial pneumatic light truck tire having a belt structure of at least two layers of 2.degree.2x.30HT cord for both Load Range C and D.

Abstract: A pneumatic radial tire for automobiles having a belt of steel cords and an organic cord reinforcement structure radially outward of the belt. The tire has improved uniformity and low vibration during high speed running due to the relative circumferential location of the joint in the tread layer, the joint in the full band reinforcement layer and the joint in the edge band which surrounds the belt.

Abstract: A pneumatic tire has an integrated circuit transponder which, upon interrogation by an external RF signal, transmits tire identification and/or other data in digitally-coded form. The transponder has a coil antenna of small enclosed area as compared to the area enclosed by an annular tensile member comprising a bead of the tire. The annular tensile member, during transponder interrogation, acts as the primary winding of a transformer. The coil antenna is loosely coupled to the primary winding and is the secondary winding of the transformer. The coil antenna is substantially planar in shape, and, when positioned between the innerliner of the tire and its carcass ply, the transponder may include a pressure sensor responsive to tire inflation pressure.

Abstract: A radial tire for an aircraft includes a toroidal carcass layer consisting of carcass plies having cords embedded therein intersecting at angles of 70.degree.-90.degree. with respect to an equatorial plane of the tire, a tread rubber arranged radially outwardly of the carcass layers, and a belt layer arranged between the carcass layers and the tread rubber and constructed by laminating circumferential breaker plies and intersecting breaker plies. The circumferential breaker plies have cords embedded therein substantially in parallel with the equatorial plane. The intersecting breaker plies have cords embedded therein intersecting at angles of 10.degree.-70.degree. with respect to the equatorial plane. Both radially outermost and innermost breaker plies of the belt layers are constructed by intersecting breaker plies.

Abstract: In a tire for a levitation-type vehicle for supporting a load which varies depending upon a change in speed of the levitation-type vehicle at landing and during subsequent traveling thereof, a configuration of a crown and rigidity of the crown are set so as to have a ground-contact configuration in which, when a load of the levitation-type vehicle is equal to or less than 45% at its full load, a ratio of a ground-contact length of a pair of shoulders in a circumferential direction of the tire with respect to a ground-contact length, in the circumferential direction of the tire, of a central portion of the crown in the widthwise direction is 0.6.about.1.5. Accordingly, the tire for the levitation-type vehicle has a wide ground-contact area at an initial stage of landing and traveling.

Abstract: A device (1) making it possible to apply at least one thread (2) to a supt (3) and characterized by the following features:it has a front clamp (4) and a rear clamp (5) along a direction of advance (F.sub.1);it has means (6, 7) for opening and closing said clamps (4, 5);it has means (8) permitting the displacement of the rear clamp (5) in the direction of advance (F.sub.1) or in a direction (F.sub.2) opposite to the direction of advance (F.sub.1); andit has means (9) for displacing the thread (2) in transverse directions.a reinforcing ply for a pneumatic tire having reinforcing threads applied on a support in a sinuous pattern having vertices.

Abstract: A radial tire is comprised of a belt, disposed between a carcass and a tread, having metal cord plies including a first belt ply, a second belt ply, a third belt ply and a fourth belt ply which are arranged radially outwardly in that order, wherein the second belt ply has a curvature concentric with the curvature of a radially outer surface of the tread and a width (B2) of at least 93% of the tread width (W), and the third belt ply has a width (B3) smaller than the width (B2) and is provided at both ends with spaced parts 1.5 to 4.5 mm distance apart from the second belt ply, the third belt ply, in a central part having a width (CR) of 60 to 70% of the width (B3) and both end parts each having a width (b) of 5 to 15% of the width, the third belt ply having a curvature concentric with the curvature of the radially outer surface of the tread.

Abstract: Pneumatic tire is provided with a belt layer including a first belt ply of which width is more than 0.9 times and less than 0.95 times the tread width and a second belt ply of which width is more than 0.88 times and less than 0.92 times the tread width, that are arranged in sequence from a carcass side.One of the belt plies is composed of two belt ply parts which are separated by a gap on the tire's equator. The other belt ply is composed of a middle belt ply part and two side-belt ply parts which are separated by a gap at two division points each spaced apart from the equator in the axial direction by a distance of 0.2 to 0.3 times the other belt ply width.Initial elasticity EA of the middle belt ply part is preferably larger than the initial elasticity EB of the other belt ply parts, especially, the ratio EA/EB is more preferably 2.0 or more and 4.0 or less.The gaps are preferably 0.5 mm to 4.0 mm.

Abstract: A heavy duty pneumatic radial tire running on rough road at high speed and having plural belt layers of steel cords comprises at least a pair of auxiliary protective strips superimposed on the belt layer so as to cover both end portions of the belt layer and protrude outward from the end portion, wherein cords of the auxiliary protective strips are inclined at an angle of 25.degree.-25.degree. with respect to the circumferential direction of the tire and are the same direction as in the cord direction of the belt layer supporting the auxiliary protective strips.

Abstract: A radial ply pneumatic tire (1) has carcass plies (16, 17), folded axially around a pair of axially spaced apart bead cores (2). The crown reinforcement (5) has one belt ply (7) folded around at least two unfolded plies (8, 9) and a shoulder reinforcing structure (11) comprising a least three layers reinforced by textile cords, forming with an axial plane intersecting them, angles which are opposed. The layers have substantially the same width. In a preferred embodiment, the lateral extend (G) of the layers under the folded belt ply (7) ranges between B/4 and B/3, wherein B is half the lateral width of the folded ply and the lateral extent (L) into the sidewall, beyond the edge of the folded ply, ranges between G and 2G.

Abstract: An off-the-road heavy duty pneumatic radial tire comprises a carcass of radial structure and a belt superimposed about a crown portion of the carcass, wherein the carcass profile in a radial section at temporary self-posture state of mounting onto a rim has a concave form between two particular contact points with respect to a straight line in parallel to the rotational axis of the tire at both sides of the equator and main belt layers constituting the belt are arranged along the concave carcass profile between the above two contact points.

Abstract: A pneumatic radial tire having at least one steel belt layer disposed at a tread portion, wherein each steel belt layer is constituted by mixing and arranging at random a plurality of steel cords having a 1.times.2 twist structure of an S twist and a plurality of steel cords having a 1.times.2 twist structure of a Z twist, and has a mixing ratio of the steel cords having the 1.times.2 twist structure of the S twist to the steel cords having the 1.times.2 twist structure of the Z twist within a range of 4:6 to 6:4 and a difference in the twist pitch of at least 1.5 mm.

Abstract: An improved tire such as a radial ply tire of the type including a radial carcass body ply or plies, side walls and a tread and further including at least one cordless belt assembly positioned and aligned on the outer or inner circumference of the radial carcass body ply or plies, or positioned on both sides of the radial carcass body ply or plies, including between the radial carcass and the tread, each cordless belt assembly consisting essentially of plural parallel, discontinuous, oriented fibers embedded in an elastomeric material, the fibers being oriented parallel to each other, the tire characterized by the absence of circumferential peripheral cords or other cords for restricting the periphery of the tire carcass against outward expansion, and the absence of corded belts on the shoulder of the radial carcass body ply or plies.

Abstract: A radial-ply pneumatic tire carcass has a reverse curvature, an outwardly concave shape, centered about the tire's equatorial plane. A wedge of elastomeric material is positioned above or below the belt structure of the tire. If positioned above the belt structure, the wedge is used with a carcass cord angle in the range from 65.degree. to 80.degree.. This carcass structure also may be used when the wedge is positioned between the belt structure and carcass. The tire has an aspect ratio less than 75%, but 40% to 65% is preferred. The wedge has a shape on its radially inner side that is similar to a low amplitude cosine function. Particularly when the wedge is above the belt structure (providing both it and the belt structure with a reverse curvature), the belt cord angle is less than a "critical angle" of about 25.degree..

Abstract: Pneumatic tires having an improved steering response have a tread portion which comprises an elastomeric composition containing a long chain hydroxy fatty acid or a derivative thereof, or an inter-condensed or intracondensed form thereof. The hydroxy fatty acid can be a saturated monocarboxylic acid having:(a) 9 to 25 (for example 13 to 17 and especially 15, 16, or 17) carbon atoms as well as the carbon atom of the carboxylic acid group; and(b) 1 to 6 (for example 2, 3 or 4) hydroxy groups.Suitable compounds are di- and tri-hydroxy palmitic and stearic acids. The invention is concerned particularly with the use of shellac as the hydroxy fatty acid compound.

Abstract: A tire assembly for a two-wheeled vehicle includes tires to be equipped on front and rear wheels, respectively. Each of the tires includes a carcass layer of organic fiber cords arranged at angles of substantially 80.degree. for the front wheel tire or 90.degree. for the rear wheel tire, and a belt layer of organic fiber cords arranged at angles of 5.degree. to 35.degree.. The belt layer of each of the tires consists of inner, intermediate and outer layers. With the front wheel tire, a width of the intermediate layer is narrower than that of the inner layer to form a step of substantially 10 mm on one side and a width of the outer layer is narrower than that of the intermediate layer to form a step of substantially 30 mm on one side. On the other hand, with the rear wheel tire, a width of the intermediate layer is wider than that of the inner layer and a width of the outer layer is wider than that of the intermediate layer to form steps of substantially 7 mm successively at one sides of the respective layers.

Abstract: A heavy duty pneumatic radial tire including a pair of bead portions, a carcass consisting of one steel cord layer and extending between the bead portions, and a tread portion arranged radially outward of a crown portion of the carcass. A normal rim on which the tire is mounted has a bead base at an angle of approximately 5.degree. relative to a rotating axis of the tire and engaging the bead portions of the tire. During filling the tire with inner pressure from 7% to 100% of a determined maximum inner pressure of the tire, a ratio A/B of an enlargement amount A of a shoulder in radial and outward directions to an enlargement amount B of the bead portion in axial and outward directions is within 0.35-0.8, preferably 0.4-0.

Abstract: A combination pneumatic tire and integrated circuit transponder for tire identification. The transponder is located within the tire structure and is capable of transmitting an identifying digital signal in response to interrogation by an R/F electric field emanating from outside the tire. The transponder then transmits the identifying signal, which is received, conditioned and demodulated. The tire has a steel-reinforced component, such as an annular tensile member in its bead or a steel-reinforced ply. The transponder has first and second electrodes, the first of which is positioned such that the average spacing of this first electrode's surface from one of the steel-reinforced tire components is substantially less than the average spacing of the second electrode's surface from such component.

Abstract: To provide good handling behavior for a motorcycle, the belt of the rear motorcycle tire has threads extending parallel to the equatorial plane and the slip angles of the tires as a function of the camber (slip angle .delta. as a function of camber angle .gamma.) are such that the difference: front slip angle .delta.2 minus rear slip angle .delta.1 as a function of camber angle .gamma. is an invariably increasing function of .gamma..

Abstract: A radial ply tire including a tread reinforcing breaker package comprising at least one ply of tire breaker fabric characterized in that the cords in both edge regions of the single radially outermost ply of the breaker package are inclined to the circumferential centerline of the breaker package at opposite acute angles so that the cords in said edge regions are in relative "V" shaped formation and the tire is marked by a directional marker pointing in the opposite direction of the "V" formation so that the tire may be fitted to a vehicle with the marker in the direction of rotation for a non-driven wheel and in the opposite direction for a driven wheel so that the greatest torque forces are applied to the breaker ply in the direction of the "V" formation.The outermost ply may be side by side strips or cord laid in a "V" formation.

Abstract: A radial tire wherein part or the whole of the blocks present on the tread area have an angle .theta. of the direction in which the maximum shear rigidity is attained relative to the circumferential direction of the tire in the range of 40.degree..ltoreq..theta..ltoreq.75.degree., the direction in which the maximum shear rigidity of said block is attained and the direction of the cords of the outermost belt layer are opposite to each other with respect to the circumferential direction of the tire, the ratio of the maximum shear rigidity of said block to the minimum shear rigidity of said block is in the range from 1.4 to 1.8, and the total area of the block is 65% or more based on the total area of all the blocks.

Abstract: A radial carcass, belted tire (10) comprises an overlay ply (18) which provides the tire with high speed endurance without adversely affecting the uniformity of the tire. The overlay ply (18) comprises textile reinforcing elements consisting of successively aligned cord sections (21) arranged in parallel rows. Each cord section has a length which is comprised between 1/4 and 1/2 of the corresponding circumferential development of the tire. The cord sections (21) in each row have substantially equal length and are separated by interruptions (22) of a width such that the total width of the interruptions per circumferentially extending row of cords is less than 4% of the corresponding circumferential development of the tire.

Abstract: A tire breaker belt comprises a core ply preferably comprising rubberized cords extending longitudinally of the belt. One or more encasing plies are wrapped around the core ply. The cords of the encasing ply or plies extend at an acute angle to the length of the belt.The belt may be formed directly as an annulus or in a long length which is cut to a shorter length and subsequently wrapped around a carcass.

Abstract: A heavy-load radial tire, comprising three or four belt layers of steel cords laminated at a slight angle with respect to the tire circumference direction in the central part of the outside of a carcass. An intermediate belt layer adjacent to the outermost belt layer has a cord strength which is at least 1.2 times greater than that of an inscribed belt layer which is inscribed in said intermediate belt layer. The end number of the intermediate belt is reduced so that the belt strength of the intermediate belt layer is substantially equal to that of the inscribed belt layer.

Abstract: A cord inclination angle of the outermost belt layer of a tire on the right side with respect to a tire running direction is arranged in such a manner as to be inclined leftwardly downward in the tire running direction while the cord inclination angle of the outermost belt layer of the left tire is arranged in such a manner as to be inclined rightwardly downward in the tire running direction. In addition, projecting bent portions of lug grooves on a tread pattern of a tire grounding surface are disposed outside from the center of a tread exploded width in the tire running direction.

Abstract: A radial tire for a passenger car characterized in that an upper filler is disposed on a bead filler positioned on a bead wire buried in each bead portion of the tire, and a single steel reinforcing layer is interposed between the upper filler and the bead filler so that it extends from outside the upper filler to the inside of the bead filler and its height H from a bead heel does not exceed 50% of a sectional height T of the tire.

Abstract: A tire which is formed by tying a knitted fabric spacer onto the tire mold core, spot welding the belt or other reinforcement to this spacer and then forming the tire body of a castable and/or sprayable elastomer.

Abstract: A heavy duty pneumatic radial tire for use in airplanes and the like is disclosed, which comprises a toroidal radial carcass, a belt superimposed about a crown region of the carcass and composed of at least three cord layers, and a bead portion reinforcement consisting of a stiffener composed of a hard rubber stock and a soft rubber stock, a main chafer made from aromatic polyamide fiber cords, and an auxiliary chafer of at least two cord layers covering the outside of said main chafer and at least one cord layer arranged along the inside of the turnup portion as an inner cord layer, and having such a triangular truss structure that cords of at least two cord layers are arranged at inclination angles of 65.degree..about.90.degree. and 35.degree..about.55.degree. with respect to the meridional plane of the tire, respectively, and cords of the remaining cord layer are arranged at an inclination angle of -50.degree..about.70.degree. with respect to the meridional plane.

Abstract: A pneumatic radial tire comprising a belt portion disposed between the tread portion and the carcass portion wherein the belt portion is constituted by at least a pair of first belts, a second belt and a third belt which are arranged from radially inward to outward, the first, second and third belts having a first series, second series and third series of parallel cords embedded therein, respectively. The first belts being laterally spaced apart a predetermined lateral space symmetrically with respect to the mid-circumferential centerline and the cords thereof are disposed at an angle of between 40 to 60 degrees with respect to the mid-circumferential centerline. The spaced-apart first belts have opposite lateral ends which are located within less than 5 percent of a belt width of the third belt from the corresponding opposite lateral ends of the third belt, respectively.

Abstract: In an open-sided bicycle tire having a plurality of carcass plies enclosing a pair of beads, and extending over the sidewalls and tread of the tire, at least one ply of a breaker is disposed between the plies of the carcass lying immediately under the tread.

Abstract: A pneumatic tire (10), designed for use on a military vehicle, comprises a single carcass ply (13) of aramid cords, a pair of steel cord belt plies (14, 15), and a ground-engaging tread portion (20). The ground-engaging tread portion is characterized by a plurality of series of independent traction elements (21), each series of traction elements extending from a lateral edge (22, 23) of the tread towards another lateral edge (22, 23) of the tread along a curved path. The traction elements in each series are separated from the next adjacent traction elements of that same series by straight grooves (24), the width of the straight grooves being less than the width of the curved grooves (25) separating circumferentially adjacent series of traction elements.

Abstract: Radial tires for motorcycles comprising a tread portion, side wall portions, bead portions, a carcass, a breaker, and optionally a reinforcing cord layer arranged outside the carcass and extending from one bead portion to the other bead portion and bead apexes made of a hard rubber, said tread portion having a plurality of longitudinal grooves in the circumferential direction at an angle of at least 5.degree. with respect to the cords of the most outer ply of the breaker. The motorcycle radial tires of the invention have an improved transverse stiffness at the side wall portions and moreover do not cause cracks at the bottom of the grooves in the tread portion.

Abstract: A reinforcement ply intended for use in a tire is characterized by the fact that the reinforcement ply is formed, at least in part, of a fabric having the following properties:(a) the fabric comprises a three-dimensional body and reinforcement threads arranged in the body and held by the body;(b) practically all the voids in the fabric are capable of being impregnated with at least one material which forms part of the structure of the tire.The invention also relates to these plies which are impregnated with at least one material which forms part of the structure of the tires. The invention further relates to tires having at least one reinforcement ply, as well as to the methods for obtaining such tires.

Abstract: A pneumatic vehicle tire having a carcass and belt made of shot-in cord fabric. In order to achieve a uniform thread density of the warp threads over the width of the layers required for forming the cord fabric, the present invention provides woof threads of finite length. The ends of these threads are guided back into the fabric by an extent which is sufficient to hold them in the fabric structure.

Abstract: In a pneumatic tire of the type which consists of a pair of right and left beads, a pair of right and left side walls continuing the beads, respectively, and a tread interposed between the side walls, and in which a carcass cord layer is spread between the beads, and at least two layers consisting of a belt reinforcing layer whose reinforcing cords have a cord angle of from 15.degree. to 30.degree. with respect to the circumferential direction of the tire and a belt reinforcing layer whose reinforcing cords have a cord angle of from 150.degree. to 165.degree.

Abstract: A reinforcement ply intended for use in a tire is characterized by the fact that the reinforcement ply is formed, at least in part, of a fabric having the following properties:(a) the fabric comprises a three-dimensional body and reinforcement threads arranged in the body and held by the body;(b) practically all the voids in the fabric are capable of being impregnated with at least one material which forms part of the structure of the tire.The invention also relates to these plies which are impregnated with at least one material which forms part of the structure of the tires. The invention further relates to tires having at least one reinforcement ply, as well as to the methods for obtaining such tires.

Abstract: A vulcanized molded tire, comprising a carcass of one or more plies of rubberized cord fabric, sidewalls, a tread band with shoulders at the joining points between said sidewalls and tread, and a breaker comprising a binding structure on each lateral portion inserted between the carcass and the tread band. The carcass plies have a profile in the cross-section comprising in each shoulder a curvilinear tract with the concavity faced towards the outside of the tire, disposed in underlying position with respect to the edges of said breaker and in correspondence with said binding structures.

Abstract: Reinforcing elements comprise a plurality of elongated metallic members, with substantially rectangular cross sections, having parallel longitudinal axes and at least one of the wide sides of each being contiguous with a wide side of another of said elongated metallic members. A single wrap member is helically disposed around the elongated metallic members such that each turn of the wrap filament member is spaced apart from the next adjacent turns of the wrap member. Elastomeric articles reinforced with these reinforcing elements are also disclosed.

Abstract: A pneumatic radial tire for passenger cars having a low rolling resistance and an excellent wet skid resistance is disclosed. The radial tire comprises a carcass of a radial construction toroidally extending between a pair of bead cores with the ends turned thereover, a tread portion arranged outside a crown portion of the carcass and having a two laminate structure of tread base rubber and tread cap rubber, and a reinforcing belt layer embedded in the tread base rubber and superimposed about the crown portion of the carcass. The tread base rubber and tread cap rubber have resiliences of not less than 65% and not more than 60%, respectively. The tread portion has a sectional ratio of a sectional area of the tread cap rubber occupied in the equatorial section of tire to a total sectional area of the tread portion of not less than 50% and a negative ratio of not more than 45%. The belt layer has a flatness of not more than 15%.