Adapter providing the connection between one tire bead and the rim. An axially inner end of the adapter is mounted on the rim seat, an axially outer end is mounted on the rim seat, a body connects said outer end to said inner end, a substantially cylindrical adapter seat receives one of said beads, and an adapter bearing face is substantially contained in a plane perpendicular to the axis. The reinforcer element of the axially outer end is entirely situated axially outside the bearing face. The body comprises, opposite the adapter seat, an annular seat protuberance, said protuberance comprising at least one rubber composition.

A dual, internal, pneumatic, boltless beadlock assembly for effectively securing a tire to a rim is disclosed. A pneumatic beadlock assembly is disposed inside a tire and mounted on a rim. A pneumatic beadlock assembly exerts a force on the two circumferential inner beads of a tire such that the tire stays in secure contact with the rim, even when the inflation pressure of the tire is not sufficient to lock the tire to the rim.

The tire comprises a pair of bead regions having an annular reinforcing structure and at least one carcass reinforcement which is anchored in the pair of bead regions. A protector portion is positioned axially outward and radially inward from the annular reinforcing structure. The protector portion includes a protector surface intended to come into contact with a rim flange and/or a rim sheet of a wheel rim and is provided with at least 2 recessed portions recessed from the protector surface toward an interior of the tire with a depth D. The at least 2 recessed portions have a minimum distance T between one another, and a Young's modulus E of a rubber composition constituting the protector portion is in a range from 1.5 to 6.0 MPa.

A run-flat tire comprises a tread portion, sidewall portions, bead portions, and a carcass ply extending between the bead portions. The sidewall portions are each provided therein with a sidewall reinforcing rubber layer having a crescent-shaped cross sectional shape and disposed on the axially inside of the carcass ply. The sidewall portions are each provided in the axially outer surface thereof with a rim protector which projects radially outward most on the radially outside of the radially inner edge of the sidewall reinforcing rubber layer. The bead portions are each provided therein with an axially inside core and an axially outside core between which each radially inner edge portion of the carcass ply is secured. When measured along a normal line drawn normally to the carcass ply from an apex of the rim protector, the thickness of the sidewall reinforcing rubber layer is in a range of from 29% to 35% of the thickness of the tire.

A dual, internal, pneumatic, boltless beadlock assembly for effectively securing a tire to a rim is disclosed. The beadlock assembly exerts a force on the two circumferential inner beads of a tire such that the tire stays in secure contact with the rim, even when the inflation pressure of the tire is not sufficient to lock the tire to the rim.

A dual, internal, pneumatic, boltless beadlock assembly for effectively securing a tire to a rim is disclosed. A pneumatic beadlock assembly is disposed inside a tire and mounted on a rim. A pneumatic beadlock assembly exerts a force on the two circumferential inner beads of a tire such that the tire stays in secure contact with the rim, even when the inflation pressure of the tire is not sufficient to lock the tire to the rim.

A dual, internal, pneumatic, boltless beadlock assembly for effectively securing a tire to a rim is disclosed. The beadlock assembly exerts a force on the two circumferential inner beads of a tire such that the tire stays in secure contact with the rim, even when the inflation pressure of the tire is not sufficient to lock the tire to the rim.

A tire vulcanizing mold for molding an unvulcanized tire into a pneumatic tire having a bead part with a bead heel part is provided with a side part ring for molding at least the bead part. A circumferential groove part extending in the tire circumferential direction is formed on a tire molding surface of the side part ring in a heel molding region for molding the bead heel part, the side part ring is divided into a side ring and a bead ring that abuts against the side ring, the division position of the tire molding surface of the side ring and the tire molding surface of the bead ring is located in the groove bottom of the circumferential groove part, and the cross-sectional shape of the circumferential groove part tapers toward the groove bottom.

An adapter for a rolling assembly comprising a tire having two beads (B), a rim (J) with two rim seats (7), said adapter connecting one of the beads and the rim. The adapter has an axially inner end (10) comprising inner reinforcer element (16), and an axially outer end (15) comprising outer reinforcer element (15), respectively mounted on a rim seat (7). Body (11) connects said outer end (9) to said inner end (10). Main reinforcement connects said outer reinforcer (15), and said inner reinforcer (16), a substantially cylindrical adapter seat (18) receiving one of said beads (B), an adapter bearing face (21) substantially contained in a plane perpendicular to the rion otataxis. The reinforcer element (15) of the axially outer end (9) is entirely situated axially outside the bearing face (21), and in that the body (11) comprises, opposite the adapter seat (7), an annular seat reinforcer (19).

Adapter providing the connection between one tire bead and the rim. An axially inner end of the adapter is mounted on the rim seat, an axially outer end is mounted on the rim seat, a body connects said outer end to said inner end, a substantially cylindrical adapter seat receives one of said beads, and an adapter bearing face is substantially contained in a plane perpendicular to the axis. The reinforcer element of the axially outer end is entirely situated axially outside the bearing face. The body comprises, opposite the adapter seat, an annular seat protuberance, said protuberance comprising at least one rubber composition.