One aspect of the tire of the present invention is a tire including a tread portion (11), a sidewall portion (12), a bead portion (13), a bead core (60) provided in the bead portion (13), and a carcass ply (51) covering at least a portion around the bead core (60), in which the carcass ply (51) includes a sewn portion (80) in which a conductive thread (81, 82) is sewn.

An electric vehicle charging system for use with an electric vehicle having a charging system including two spaced wheels capable of conducting electricity to a rechargeable battery. The vehicle charging system includes a DC power supply, an insulating base, and a plurality of conductive charging pads mounted on the base. A first and a second charging pad are electrically connected to the first and second terminals, respectively. The first and second charging pads are positioned to allow one spaced wheel to electrically communicate with the first pad while a second spaced wheel electrically communicates with the second pad. The first terminal of the power supply is connected to the battery via the first pad and the first wheel and the second terminal is connected to the battery via the second pad and second wheel.

A tire comprises a crown zone comprising a crown reinforcement surmounted radially on the outside by a tread formed from at least one material that is not a conductor of electricity, the crown reinforcement comprising a plurality of layers superposed on one another, each layer of the crown reinforcement comprising two ends in the circumferential direction, these two ends being joined together in an abutment region, the tread comprising a weld region circumferentially offset by an angle of 180 degrees with respect to the region at which the radially outermost layer of the crown reinforcement is superposed. The tire comprises at least one conducting strip positioned between the tread and the crown reinforcement and located circumferentially as to be positioned at equal angular distances between the tread weld region and the region at which the radially outermost reinforcing layer is butted together, these two regions being diametrically opposite.

A tire includes a circumferential tread disposed in a crown region of the tire and an undertread disposed below the circumferential tread. The tire also has a pair of bead regions, including a first bead region and a second bead region, and a body ply extending from the first bead region to the second bead region. The tire further has a pair of sidewalls, including a first sidewall extending between the first bead region and the circumferential tread and a second sidewall extending between the second bead region and the circumferential tread. The tire also has a sidewall antenna adjacent to the first sidewall. The sidewall antenna has a first end contacting the undertread and a second end contacting the body ply.

A pneumatic tire includes a tread portion including main grooves and land portions. In a cross-sectional view of the tire, one of the land portions includes a first edge, a second edge, a ground contact surface extending between the first edge and the second edge and having an arc-shaped profile protruding radially outwardly, and conductive portion made of conductive rubber. The conductive portion extends from a radially inner end to a radially outer end exposed at the ground contact surface with an inclination toward the first edge. The inner end is connected to a tire internal structural member to be electrically connected to a rim when the tire is mounted on the rim. On the ground contact surface, a central position of the outer end is located on a central position of the land portion in a tire axial direction, or on a side of the first edge.

The invention relates to a tire having a rubber tread of a circumferentially zoned tread. The tread zones are comprised of three circumferential load bearing zones, with each zone containing a portion of the running surface of the tread, comprised of an intermedial rubber zone positioned between and extending beneath two stratified lateral tread rubber zones. The tread configuration contains an underlying carbon black-rich base rubber layer. The lateral tread rubber zones are therefore spaced apart from each other with the intermedial tread zone therebetween and also spaced apart from the tread base rubber layer with the intermedial tread zone therebetween. The intermedial and stratified lateral zones are comprised of rubber compositions having differentiated rebound physical properties.

The present invention provides a pneumatic tire that is excellent in electrical conductivity, fuel economy, handling stability and crack growth resistance. The pneumatic tire of the present invention has a specific structure, including: a sidewall portion formed by laminating two or more rubber layers including (1) an outer sidewall layer constituting an outer surface of the tire and (2) a conductive inner sidewall layer connected to a clinch and a breaker and located between a carcass and the outer sidewall layer (1); a tread portion; a bead portion including the clinch; the carcass; the breaker; and an electrically conductive rubber, wherein in the sidewall portion, the thickness ratio of the layer (1) to layer (2), the ratio of the storage modulus E(2) at 70 C. of layer (2) to the storage modulus E(1) at 70 C. of the layer (1), and the volume resistivity of layer (2) fall within specific ranges.

The present invention aims to provide pneumatic tires that can achieve both abrasion resistance and low heat build-up properties. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing: a rubber component including an isoprene-based rubber and a high-cis polybutadiene rubber having a cis content of 90% by mass or more; one or more types of carbon black; and sulfur, at least one of the one or more types of carbon black being produced from a feedstock oil that has a BMCI value of 150 or less and an aliphatic hydrocarbon content of 30% by mass or more, the BMCI value being calculated from the average boiling point T ( C.) and the specific gravity D (60/60 F.) relative to water at 60 F. according to the equation below,

BMCI=48,640/(T+273)+473.7D456.8.

A tire has a cap rubber, a base rubber, and a conductive rubber. The cap rubber which is formed by a nonconductive rubber and constructs a ground surface. The base rubber which is provided in an inner side in a tire radial direction of the cap rubber. The conductive rubber which extends in a thickness direction of the cap rubber, passes an inner portion of the cap rubber and gets to a bottom surface of the base rubber from the ground surface. An interface end which is in contact with the conductive rubber in an interface between the cap rubber and the base rubber comes down to an inner side in a radial direction in comparison with an interface in a periphery of the interface end.

A tire includes a body ply extending from a first bead region to a second bead region and a conductive ply disposed radially above the body ply. The tire further includes a gum strip having a top end in contact with the conductive ply and a bottom end located in the first bead region.