A radial tire (10), with the sidewalls thereof (20), and the tread thereof (30) arranged for minimizing the temperature of the tire while guaranteeing its electrical conductivity. The tread (30) comprises two wings (311, 312) and a central portion (32). These components rest on a base layer (33) radially on the inside of the tread (30). The base layer (33) contains a lateral portion (331, 332) partly in contact with a tread wing (311, 312). This structure of the crown of the tire, in contact with the carcass reinforcement makes it possible to constitute a preferential conductive pathway of the electric charges between the rim and the ground when the tire is mounted on its rim and flattened on the ground.

A tire includes a pair of beads and a crown region including a circumferential tread disposed radially above a circumferential belt. The tire further includes a pair sidewalls extending from the pair of beads to the crown region. A body ply wraps around the pair of beads and terminates in a pair of turn up ends in the crown region, below the middle 30% of the circumferential belt. A conductive substance is disposed along a strip of the body ply.

A tire (1) comprises a crown zone (4) comprising a crown reinforcement (41) surmounted radially on the outside by a tread (40) formed from at least one material that is not a conductor of electricity, the crown reinforcement (41) comprising a plurality of layers (411, 412, 423) 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 (40) 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 (413) is superposed. The tire comprises at least one conducting strip (7) of a thickness at most equal to 2 mm and of small width, positioned between the tread and the crown reinforcement. The conducting strip (7) is located circumferentially in such a way 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.

An electrically conductive yarn (200, 300) comprising a first yarn (262, 362) and a second yarn (264, 364), the first yarn (262, 362) comprises or consists out of a plurality of stainless steel fibers, the second yarn (264, 364) comprises organic fibers wherein the first yarn (362) and the second yarn (364) are twisted or cabled together or the second yarn (264) is wrapped around the first yarn (262) such that the first yarn (262) is provided as a core yarn and such that the first yarn (262) provides part of the surface of the electrically conductive yarn (200).

A tire includes at least one annular structure configured to interface with a wheel. The tire also includes a circumferential tread disposed in a crown region of the tire and an intermediate elastomeric layer having a conductive bleeder cord. The conductive bleeder cord extends from the annular structure to at least a middle third of a tread width and includes a metallic component that conducts electric charge and a textile component that permits gas evacuation.

Rolling assembly comprising tire P, rim J, adapter connecting a bead and the rim. The adapter has axially outer (9) and inner (10) ends mounted on rim seat (7) having respective outer (16) and inner (20) reinforcers. Body (11) connects the outer (9) and inner (10) ends forming a single piece, an adapter seat (18) receives a bead and is situated at end (9), an adapter bearing face (21) in a plane perpendicular to the rotation axis, and situated on the axially inner face of outer end (9). Reinforcer (20) of end (9) is axially outside bearing face (21). The body comprises, opposite adapter seat (14), annular seat reinforcer (19) and the adapter comprises conductive strip (22) positioned over all or part of the circumferential perimeter of said adapter and along a complete path extending from adapter seat (14) to rim flange (8).

A pneumatic tire is described as having one or more electrical conductive strips for discharging electrical build up in the tire. The electrical conductive strips provide a static electricity conductive path from the tire rim to a ground-contacting surface. The strips are arranged around the outer surface of the tire from a first bead portion to a second bead portion. The strips can lay over the outer surface of the sidewalls and the tire tread. As positioned over the tire tread, a portion of the electrical conductive strip remains in contact with the ground as the tread wears during use to provide continued dissipation of static electricity away from the tire.

A pneumatic vehicle tyre of radial type of construction, having a tread (1), having a carcass inlay (3), having electrically nonconductive sidewalls (7) and having at least one electrically conductive component (8) or element in a bead region, which component or element, in the case of a tyre mounted on a wheel rim, comes into contact with said wheel rim, wherein either the tread (1) is electrically conductive or, in the tread region, at least one electrically conductive component (10) is provided which is overlapped on the outside by the sidewalls (7) and which is connected in electrically conductive fashion to the tread outer surface, and wherein filaments provided with an electrically conductive coating are incorporated at least in a sidewall region, the coating of which filaments forms electrically conductive passages between the tread (1) or the component (10) and the at least one electrically conductive component (8) or element in the bead region.

A pneumatic tire includes a carcass layer, a belt layer, a tread rubber having a cap tread and an undertread, a pair of side wall rubbers, a pair of rim cushion rubbers, and a grounding tread that is exposed to a road contact surface of the tread rubber and that penetrates the cap tread and the undertread to contact the belt layer in an electrically conductive manner. The grounding tread includes a widened portion having a cross-sectional area that widens toward a contact surface with the belt layer at the contact portion with the belt layer. The widened portion of the grounding tread has a profile shape that bulges outward in a tire width direction.

Provided is a pneumatic tire in which an electric resistance can be reduced without adversely affecting other performances such as tire durability or manufacturing processes even when low loss of a rubber member of the tire is attempted. The pneumatic tire includes a belt layer 2 provided at an outer side of a crown portion of a carcass 1 in a tire radial direction, and a rubber chafer 4 is provided at an outer surface of a bead portion in a tire width direction. A cushion rubber 13C and a tread rubber 13G are sequentially provided at an outer side of the belt layer in the tire radial direction, and a composite fiber 3 containing a conductive fiber and a non-conductive fiber extends at least from the bead portion to a position in contact with the cushion rubber or a belt under cushion arranged at an outer end portion of the belt layer in the tire width direction in such a manner as to be exposed on at least one surface the carcass at either the outer and inner sides of the tire, and the rubber chafer contains a carbon black having a nitrogen adsorption specific surface area of 30 to 43 m.sup.2/g.