586results about "Tyre beads" patented technology

Provided is a pneumatic radial tire for passenger vehicles in which the cross-sectional width SW of the tire and the outer diameter OD of the tire satisfy a predetermined relationship, and an end of the carcass (an end of a carcass turn-up portion when the carcass has the carcass turn-up portion) in one tire width-direction half that is on the inner side when the tire is mounted on a vehicle is located on the inner side in the tire radial direction than an end of the carcass turn-up portion in the other tire width-direction half that is on the outer side when the tire is mounted on a vehicle.

The utility model relates to the technical field of tire design, and particularly discloses a reinforced tire bead structure of a light truck tire, which is used for solving the problem of poor performance of a tire structure in the prior art. Comprising a lining, a carcass ply is attached to the outer side of the lining, hard bead filler corresponding to a steel wire ring is arranged on the outer side of the carcass ply, soft bead filler extending upwards is arranged on the outer side of the hard bead filler, the bottom of the carcass ply bypasses the steel wire ring and extends upwards to form a wrapping structure, and the outer end of the carcass ply is a carcass ply end point. According to the utility model, the structural form and material distribution of the tire bead part are innovatively designed, so that the durability of the tire bead part is improved; compared with the prior art, by applying the novel seam allowance reinforcing steel wire structure and the special rubber, changing the difference level between the tire body and the seam allowance reinforcing steel wires, isolating the end points of all steel wire components and the like, the deformation resistance of the tire bead position is improved, the damage to the tire bead caused by the stress concentration of the tire body turn-up end points is eliminated, and the overall durability of the tire bead position is improved.

Disclosed are various embodiments for integrating one or more sensing device(s) into a tire during a tire manufacturing process. In one example, the sensor device includes an electronic device (e.g., a sensing and / or energy harvesting device), a communication device, or any combination thereof. The sensing and / or energy harvesting device is positioned between a chafer and a ply of a tire, at an axially outward side of the ply, wherein the chafer is configured to form a seal with a rim flange of a wheel. The communication device is positioned between a liner and the ply at an axially inward side of the ply. In some examples, a connector is connected between the sensing and / or energy harvesting device and the communication device.

A tubeless tire insert comprising: an annular body having shock absorbing characteristics; a positioning system configured to vary a mean inner diameter of the insert, wherein the insert has a mean inner diameter X when the tire is being installed on the rim; and the insert has a mean inner diameter Y when the tire is installed on the rim, where X is greater than Y.

A pneumatic tire comprises: a tread portion; a pair of sidewall portions; a pair of bead portions each with a bead core embedded therein; a toroidal carcass extending between the bead portions; and a sidewall rubber disposed axially outside the carcass in each of the sidewall portions. The bead portion has a bead bottom surface which contacts with a bead seat of a wheel rim when the tire is mounted thereon. The bead bottom surface comprises an axially inner region including a bead toe and an axially outer region including a bead heel. The axially inner region is formed by a canvas chafer. The axially outer region is formed by the sidewall rubber extended radially inwardly from the sidewall portion.

To provide a pneumatic tire which can improve rim fitting properties and also improve operation stability.SOLUTION: A pneumatic tire 1 comprises: a tread 10; a side wall 20; and a bead part 30. The bead part 30 includes: a bead base surface 34 which extends along a first linear line L1 slanted to a tire radial direction outer side toward a tire axial direction outer side at a tire radial direction inner end of the bead part 30 on the external surface when viewed in a tire meridian cross section; a bead back face 35 which extends in the tire radial direction outer side at the tire axial direction outer end of the bead part 30, and extends along a second linear line L2 in which a tire radial direction inner end is along the tire radial direction; and a bead heel surface 36 which extends along a third linear line L3 further slanted to the tire radial direction outer side toward the tire axial direction outer side than the first linear line L1 between the tire axial direction outer end of the bead base surface 34 and the tire radial direction inner end of the bead back face 35.SELECTED DRAWING: Figure 3

A pneumatic tire (10) is disclosed comprising a carcass (22) and a belt structure (40). The belt structure (40) comprises a plurality of belt layers that include at least one spiral belt layer (60) and at least one zigzag belt layer (70). Each of the at least one spiral belt layers (60) has cords arranged at an angle of 5° or less with respect to an equatorial plane of the pneumatic tire (10) and each of the at least one zigzag belt layers (70) has cords arranged at an angle in a range of from of 2° to 40°, alternatively from 5° to 30°, with respect to the equatorial plane of the pneumatic tire (10) and extending in alternation to turnaround points at each lateral edge of the belt structure (40). A first belt layer of the plurality of belt layers located radially outward of the carcass (22) is one of the at least one spiral belt layers (60). The first belt layer has an axial width less than the axially widest belt layer of the plurality of belt layers. The pneumatic tire (10) further comprises a tread (20) comprising two or more main grooves (17a, 19a, 17b, 19b) extending circumferentially continuously around the pneumatic tire (10) and defining a plurality of ribs (25a, 23a, 21, 23b, 25b) that include an axially outermost rib (25a, 25b) on each lateral side of the tread (20). At 10% to 100% of the rated inflation pressure of the pneumatic tire (10) and no load, each of the two axially outermost ribs (25a, 25b) is radially raised in relation to a respective next nearest rib (23a, 23b) located axially inward of the respective axially outermost rib (25a, 25b).

The application discloses a light truck tire with a light-weighted bead structure and relates to the field of all-steel tires. The bead part comprises a tire body, a steel wire ring, lower triangular rubber, upper triangular rubber and wear-resistant rubber. The outer end point of the wear-resistant rubber is higher than the upper end point of the upper triangular rubber. The ratio of the height of the outer end point of the wear-resistant rubber to the height of the tire section is in the range of 0.23-0.53. The ratio of the height of the upper end point of the upper triangular rubber to the height of the tire section is in the range of 0.20-0.50. The outer end point of the wear-resistant rubber is higher than the upper end point of the upper triangular rubber, so that the thickness of the triangular rubber and the height of the triangular rubber are further reduced, the thickness of the bead is reduced, and stress concentration of the end points of the components of the bead part caused by the small difference level is avoided.

The invention relates to a vehicle pneumatic tire comprising a tread, a carcass (2) with a carcass ply (2a) with carcass reinforcement carriers and a coil bandage with a coil bandage reinforcement carrier, wherein each carcass ply (2a) runs between bead areas (4), wherein a bead core (5) is arranged in each bead area (4) and each carcass ply (2a) is folded over the bead cores (5) so that a carcass fold (2f) is formed. According to the invention, it is provided that - in the carcass (2) a carcass reinforcement carrier (2b) made of a metallic material runs, - the bead core (5) has a teardrop-shaped cross-section and no apex is arranged radially above the bead core (5) between the bead core (5) and the carcass layer (2a), - the carcass high-profile cut (2f) runs radially below the sidewall (3), and - the vehicle tire has a load index in the range of 71 to 126.

The invention provides a pneumatic tire and a method for manufacturing the same, wherein the tire thickness of a tire shoulder part can be sufficiently ensured and the durability and the puncture sealing property of the tire can be both realized through the structure of a tire body. In a pneumatic tire in which a carcass layer (4) has a structure in which a bead core (5) of a bead section (3) is wound up from the inside to the outside of the tire, the end (4e) of a wound-up section (4B) of the carcass layer (4) is disposed further toward the inside in the width direction of the tire than the end (7e) of a belt layer (7), and a sealant layer (20) is formed on the inner surface (10) of the tire at a tread section (1). The end portion (20e) of the sealant layer (20) in the tire width direction is located at the shoulder portion and is disposed further toward the outside in the tire width direction than the tip end (4e) of the wound-up portion (4B) of the carcass layer (4).

To provide a pneumatic tire of an outer apex structure, which improves durability performance of a toe of bead.SOLUTION: In a pneumatic tire, a reinforcement rubber layer adjacent to the tire-axial-direction outside of a folded part is arranged on at least one of a pair of toes 4 of bead. The reinforcement rubber layer includes a first rubber layer 11, and a second rubber layer 12 that is arranged on the tire-axial-direction outside of the first rubber layer 11. The loss tangent tanδ1 of the first rubber layer 11 is smaller than the loss tangent tanδ2 of the second rubber layer 12.SELECTED DRAWING: Figure 2

To provide a heavy load tire 2 which can be reduced in weight and can achieve improvement of SFC resistance.SOLUTION: In a meridian cross section of a tire 2, a contour CL of a carcass 12 has: a curved portion 44 expanded outward; and a reverse curved portion 46 which is provided at radial inside of the curved portion 44 and dents inward. The reverse curved portion 46 is connected to the curved portion 44. A boundary between the curved portion 44 and the reverse curved portion 46 is a flexion point PV. A part or whole of the curved portion 44 is expressed by a first arc including the flexion point PV. A part or whole of the reverse curved portion 46 is expressed by a second arc including the flexion point. The first and second arcs come in contact with each other at the flexion point PV. A side surface 48 of the tire 2 has; a recessed portion 50 which hollows inward; an outside portion 52 which is located at radial outside of the recessed portion 50; and an inside portion 54 which is located at radial inside of the recessed portion 50. The recessed portion 50 is located at radial outside of the flexion point PV.SELECTED DRAWING: Figure 5

To provide a pneumatic tire capable of improving riding comfort performance while suppressing deterioration of low rolling performance.SOLUTION: The pneumatic tire 1 includes a cap rubber 2C having a rubber hardness B. In a tire meridian cross section of a normal state, a rim protector 10 having a top part 11 projecting to a tire outer side is formed on an outer surface side 4s of a first bead part side 4A. The rim protector 10 includes an inside circular arc surface 12 of a curvature radius C (mm) extending from a top part 11 to the inside in the tire radial direction and having a 12c central part in the tire outside. When a separation distance in the tire axial direction between the top portion 11 and a tire radial direction line RL defining a rim width of a normal rim R is H, the following formula (1) is satisfied. 12.8 ≤ H * B / C ≤ 93.5 (1) SELECTED DRAWING: Figure 1

A pneumatic tire includes: a tread portion extending in a tire circumferential direction and having an annular shape; a pair of sidewall portions disposed on both sides of the tread portion; and a pair of bead portions disposed on an inner side in a tire radial direction of the sidewall portions. The tire is embedded with a transponder covered with a covering layer. A modulus M50 (0° C.) at 50% deformation at 0° C. of the covering layer is in a range of from 0.5 MPa to 2.0 MPa, and a modulus M50 (−20° C.) at 50% deformation at −20° C. of the covering layer and the modulus M50 (0° C.) at 50% deformation at 0° C. of the covering layer satisfy a relationship 1.0<M50 (−20° C.) / M50 (0° C.)≤2.5.

The invention relates to a vehicle pneumatic tire comprising two sidewalls connected to each other via a tread, and a tire carcass with bead areas arranged in the sidewalls, wherein the first and / or second bead area is additionally connected to a relative inner helix area (6) which anchors the tire carcass (3) by wrapping around a bead core (4) arranged on the corresponding bead area (5) and has a free carcass end (7), wherein the helix area is guided around the associated bead core such that the carcass end (7) terminates radially outside the bead core, and wherein a separate reinforcing element (13) is provided with two reinforcing sections (13a, 13b) folded towards each other at a fold (8), wherein the reinforcing element (13) is arranged either on a side of the tire carcass (3) facing the bead core or facing away from it, and wherein the free ends (15,16) the reinforcement sections (13a, 13b) are arranged radially inside the bead core in a region (9) and the folding is arranged radially outside the bead core.

The invention discloses an all-steel load-bearing radial tire and relates to the technical field of radial tires. The present invention optimizes the design of the tire's outer profile section width SW, lower side plate height LSH, and bead positioning line width TTZ. Under the constraints of given technical parameters, the stress deformation of the tire bead area is small. At the same time, in terms of structural design, the carcass cord end point height HSC, the bead chafer outer end point height HWC.O, the bead chafer inner end point height HWC.I, the hard apex rubber upper end point height HHBF, the bead area integral reinforcement layer arranged between the carcass cord, apex rubber and steel ring, and the bead chafer inner reinforcement layer arranged between the carcass cord and the bead chafer inner end point are optimized, and new requirements are set for the strength of the reinforcement layer and the strength and modulus of the cord covering rubber. In terms of formula materials, the deformation and modulus matching of soft and hard apex rubbers are also deeply explored and verified, so that the stress deformation of the entire bead area is reduced, thereby reducing early cracks at the carcass cord end point, the bead chafer outer / inner end point, the hard apex rubber upper end point, and the widest position of the steel ring, effectively extending the service life of the tire.

The invention discloses a light truck type tire capable of improving durability performance, and relates to the technical field of tires, the light truck type tire specifically comprises a tread, a sidewall and a tire bead, a covering layer, a belted layer, a carcass ply and an airtight layer are sequentially laid on the inner side of the tread, and the layers are sequentially stacked from outside to inside to jointly form a main structure of the tire; a first L-shaped nylon wrapping cloth is arranged in a curved surface transition area of the sidewall and the tread, and a second L-shaped nylon wrapping cloth is arranged in a transition area of the sidewall and the tire bead; a framework material of the belted layer is a steel cord, and the steel cord is of a '1 + 5' structure and comprises a center wire and five outer layer wires evenly arranged on the outer layer of the center wire. The L-shaped nylon wrapping cloth is additionally arranged on the tire sidewall curved surface transition section and the tire bead part, so that the fitting stability of the tire bead and the rim is enhanced, the non-deformability of the tire bead is improved, and the contact surface of the rim and the tire bead is protected.

The invention relates to a pneumatic vehicle tyre having a tread, a carcass (2) and a winding bandage with at least one winding bandage reinforcement, wherein the carcass (2) has a carcass ply (2a) with a carcass reinforcement (2b), and the carcass ply (2a) runs between bead regions via side walls (3). According to the invention, - in the carcass ply (2a), a carcass reinforcement (2b) made of a metallic material (mM) runs at a third angle (α3) which changes between the bead regions (4) in such a way that the carcass reinforcement (2b) runs radially below the tread (6) at a different third angle (α3) than in the bead regions (4) and / or in the region of the side walls (3); - the winding bandage reinforcement (8b) has an elongation at break (D) of between 2% and 6%; and - the pneumatic vehicle tyre (50) has a load index in the range of 71 to 126.

Provided is a tire having improved durability during high-speed travel. A tire having a pair of bead sections each having a bead filler extending from a bead core to the outside in the tire radial direction, and a bead support layer disposed on the outside of the bead filler in the tire rotation axis direction, the bead support layer being composed of a rubber composition (B), the tire having an outer diameter (mm) of Dt and an outer diameter (mm) of Dt, the outer diameter (mm) of Dt being smaller than the outer diameter (mm) of Dt being smaller than the outer diameter (mm) of Dt, and the outer diameter (mm) of Dt being smaller than the outer diameter (mm) of Dt being smaller than the outer diameter (mm) of Dt. When the loss tangent of the rubber composition (B) at 70 DEG C is 70 DEG C tan [delta] (B), Dt and 70 DEG C tan [delta] (B) satisfy the following formulae: (1) 70 DEG C tan [delta] (B) * Dt < = 110.0; (2) Dt < = 600.

A pneumatic tire including: a tire body; and a communication device embedded in the tire body or attached to an inner surface of the tire body. The communication device includes a flat antenna, and the communication device is disposed so that an antenna in-plane direction that is perpendicular to the thickness direction of the flat antenna is along an outer surface of the tire body.

One embodiment relates to a tyre with a bead profile structure, comprising a tread, sidewalls, and beads 10 for improving lateral stiffness, wherein the bead (10) has a range in which the X-coordinate is 8.8-9.7 mm and the Y-coordinate is 19.2-21.7 mm from origin (O), which is a common European Tyre and Rim Technical Organization (ETRTO) rim standard reference point of a bead outermost point (P) that is in contact with a wheel rim.

The invention relates to a pneumatic vehicle tire having two sidewalls (5) terminating in a bead region (8), in which the bead region (8) is formed with a bead core (3), a carcass insert (4) extending around the bead core, and a rubber rim flap (7) forming the outer surface of the bead region (8), the rubber rim band (7) is arranged at least partially between the rim (1) and the bead core (3) in a position for using the vehicle pneumatic tire on the rim (1), the rubber rim band (7) being formed as a single piece from a rubber compound, and the rubber compound being arranged at least partially between the rim (1) and the bead core (3) in a position for using the vehicle pneumatic tire on the rim (1). The rubber compound has a loss factor (tan [delta]) of between 0.02 and 0.2 at 20 DEG C according to DIN 53512 and a Shore hardness in the range of 65 Sh-A to 80 Sh-A measured by means of a durometer at 20 DEG C according to DIN ISO 7619-1. The invention also relates to a wheel having such a pneumatic vehicle tire, and to the use of a rubber rim flap.