Provided are: an elastomer-metal cord composite which can improve various performance of a tire, such as steering stability, corrosion propagation resistance, and belt layer separation resistance; and a tire including the same. In an elastomer-metal cord composite (10), a metal cord (2) composed of a bundle of plural metal filaments (1) that are arranged in a single row without being twisted together is coated with an elastomer (3). A gap is provided between adjacent metal filaments, and when the diameter of the metal filaments is defined as D (mm), a gap amount, which is a distance between the surfaces of the adjacent metal filaments that is measured in a direction orthogonal to an extending direction of the metal cord, is defined as G (mm), and the number of metal filaments constituting the metal cord is defined as N (filaments), the elastomer-metal cord composite (10) satisfies a relationship expressed by the following Formula (1): 0.45≤[(D/2).sup.2×π×N]/{D×[D×N+G×(N−1)]}≤0.77 (1) wherein, D and G>0, and N is an integer.

The pneumatic tire includes a carcass layer, a belt layer disposed on an outer side of the carcass layer in a radial direction, and a tread rubber disposed on an outer side of the belt layer in the radial direction. Additionally, the carcass layer has a cord angle of 80° or more and 100° or less. Additionally, the belt layer is formed by layering a first reinforcing belt, a second reinforcing belt that is narrower than the first reinforcing belt, and an auxiliary belt that is spaced apart from a tire equatorial plane and disposed between the carcass layer and the first reinforcing belt. Additionally, the first reinforcing belt and the second reinforcing belt have cord angles of 11° or more and 30° or less, and the auxiliary belt has a cord angle of 55° or more and 70° or less.

A pneumatic tire for use on trucks, the tire comprising: a tread which includes a belt reinforcement structure, the belt structure including a pair of working belts, wherein the angle of the working belts range from about 10 degrees to about 50 degrees, and wherein the first working belt has an angle of the reinforcements different that the angle of the belt reinforcements of the second working belt. The belt package further includes a low angle belt that is preferably positioned between of the working belts, wherein the angle of the low angle belt is less than 5 degrees. The working belts and the low angle belt are extensible, and preferably made of high elongation wire. The pneumatic tire further includes a wherein the tread is formed of a treadcap compound having a tensile at break greater than 18 MPa, and an elongation at break greater than 450%.

A dynamic wireless power transfer system includes a power transmission coil, a power transmission circuit, a power reception coil, a power reception circuit, and a relay circuit. The power transmission coil is provided in a road. The power transmission circuit supplies electric power to the power transmission coil. The power reception coil is provided in a vehicle. The power reception circuit is connected to the power reception coil. The relay circuit transfers electric power between the power transmission coil and the power reception coil in a contactless manner.

A tire (1) for an agricultural vehicle, having a crown reinforcement (3), with at least two crown layers (31, 32), each having metal reinforcers which are coated in an elastomer material. Any metal reinforcer of a crown layer (31, 32) has a law, known as a bi-modulus law, governing its elastic behaviour under tension, comprising a first portion having a first extension modulus MG1 at most equal to 30 GPa, and a second portion having a second extension modulus MG2 at least equal to 2 times the first extension modulus MG1, and any metal reinforcer of a crown layer (31, 32) has a law governing its behaviour under compression that is characterized by a critical buckling strain EU at least equal to 3%.

A tire includes an electronic device, such as an RFID chip, within the body of the tire. For particular embodiments, an RFID chip is disposed within a tire belt. The RFID chip may be disposed on an inner or outer belt. A method of joining the RFID chip to a tire cord is also provided.

A pneumatic tire comprises a carcass layer, a belt layer disposed on an outer side of the carcass layer in a tire radial direction, and a tread rubber disposed on the outer side of the belt layer in the tire radial direction. The belt layer formed by laminating an angle belt having a belt angle ≥45° and ≤70° in absolute values, a pair of cross belts, having belt angles of ≥10° and ≤45° in absolute values and having belt angles of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to a tire circumferential direction. A tread width TW and a cross-sectional width Wca of the carcass layer have a relationship such that 0.82≤TW/Wca≤0.92. A width Ws of the circumferential reinforcing layer and a cross-sectional width Wca of the carcass layer such that 0.60≤Ws/Wca≤0.70.

Crown of a tire for a heavy vehicle that is desensitized to attacks. The tire (1) comprises tread (2) having a median degree of surface siping TL.sub.C, expressed in m/m.sup.2, equal to the ratio between the cumulative length L.sub.DC of the cuts (21), present in a median portion of tread of axial width W.sub.C, and the median area A.sub.C of the radially outer surface (23) of the tread (2), and protective reinforcement (4) comprising at least two protective layers (41, 42) that are formed of elastic metallic reinforcers and have a maximum breaking strength R.sub.max, expressed in daN/m, such that the median degree of surface siping TL.sub.C of tread (2) is at least equal to 5 m/m.sup.2 and a coupling ratio C.sub.C, equal to the ratio between the maximum breaking strength R.sub.max and the median degree of surface siping TL.sub.C, is at least equal to 18 000 daN.

The present invention provides a tire that uses an elastomer-metal cord composite, which composite is obtained by coating metal cords with an elastomer, each metal cord being composed of a bundle of metal filaments arranged without being twisted, and which composite is capable of highly improving the performance of the tire. The above described tire is one including a belt (105) which includes at least two belt layers (105a) and (105b). In this tire, the belt layers (105a) and (105b) are each obtained by coating metal cords (2) with an elastomer (3), each metal cord (2) being composed of a bundle of a plurality of metal filaments (1) arranged in a row without being twisted; at least one pair of adjacent metal filaments in the metal cord (2) differ in at least one of the amount of shaping and shaping pitch; each of the belt layers (105a) and (105b) has a thickness t1 of more than 0.30 mm and less than 1.00 mm; and the distance g in the tire radial direction between the metal cords (2) in the two adjacent belt layers (105a) and (105b) is 0.10 mm or more and 1.20 mm or less at the center of the tire.

Reinforcers of crown layers (211, 212) of a civil engineering vehicle are made of metal and wound, in the form of a strip (5) of width W, along a circumferential zigzag trajectory following a periodic curve (7), extending over a number N of periods P distributed over a number T of circumferences 2ΠR and satisfying the two relations N*(W/sin A)=2ΠR*t, where 0.6⇐t⇐1, and N*P=2ΠR*T, so as to form a bilayer (21). Additionally, for at least 40% of the strip crossovers (53) axially positioned, relative to the circumferential direction (XX′), at an axial distance L1 equal to not more than 0.25 times the amplitude L of the periodic curve (7), the circular bilayer portion (213), centred on the strip crossover (53) and having a radius R1 equal to twice the width W of a strip (5), comprises Ne outer strip crossovers and Ni inner strip crossovers, such that |Ne-Ni|/(Ne+Ni)⇐0.3.