Michelin Recherche Et Technique S.a.

Compagnie Générale Des Etablissements Michelin-Michelin & Cie

Compagnie G&eacute;n&eacute;rale Des Etablissements Michelin - Michelin & Cie

Other

Compagnie Generale Des Etablissements Michelin

Michelin & Cie

Jean-Jacques Drieux

Olivier Muhlhoff

Jean-Pierre Pompier

Jean-Charles Lacour

David Jardine

Bernard Guerinon

James Robert Anderson

Pierre Chandezon

Richard Abinal

Francois Hottebart

Adam Jara

Jean-Claude Faure

Claude Eynard

Sebastien Drap

Jean-Pierre Cowart Pompier

René Balichard

Romuald Gaillardon

A tyre for a vehicle wheel comprising two sidewalls, a tread, beads, the sidewall intended to be positioned on the interior side of the vehicle being shorter than that intended to be positioned on the exterior side of the vehicle, a reinforcement structure extending between the beads and maintained in said beads by anchoring zones, each of the beads comprising a specific and distinct arrangement of the anchoring zone thereof, such that the anchoring zone of the bead intended to be positioned on the exterior side of the vehicle exhibits a greater anchoring capacity than the anchoring zone of the bead intended to be on the interior side of the vehicle. The internal and external anchoring zones are thus arranged in such a manner as to produce, in operation, a rim clamping load which is substantially identical on each side.

Extended mobility tire with asymmetrically arranged beads

Vehicle tire including two sidewalls, beads which include a seat and an external flange which are intended to come into contact with a suitable rim, and a carcass reinforcement structure. At least one bead comprises a circumferential cord structure distributed in two regions, and an anchoring region in which the reinforcement structure is anchored in the bead, that region including circumferential cords arranged as stacks distributed symmetrically on opposite sides of the reinforcement structure. The center of inertia of the bead is located in the immediate vicinity of the anchoring region.

Extended-mobility tire with bead having symmetrical load distribution

A safety support designed to be inserted by a translation operation around a rim bearing in which the radially inner surface of the base of the support contains a plurality of protuberances radially arranged internally.

Tire safety support and rim and support assembly containing centering means and with facilitated mounting

A device designed for demounting a tire from a rim at least one of whose seats is inclined outwards, the device being in the form of an insert () of length (L) with three faces and whose cross-section in a transverse plane is triangular overall with a contour formed by two long sides () and a short side (), the angle between the long sides being close to the angle between the rim seats and the rotation axis, the length of the short side being essentially equal to the height of the projection of the outward-inclined rim seat, this insert () comprising on its face intended to come in contact with a bead seat at least one relief () designed to interact with said bead seat () so as to keep the insert engaged with the bead.

Device for demounting a tire on a rim with seats inclined outwards

A tire comprising two sidewalls, beads, a reinforcement structure extending radially from each of the beads towards the crown zone, at least one of said beads comprising: The anchoring rubber mix makes it possible, in spite of its rigidity which is very much less than what was advocated previously, to retain very satisfactory endurance properties.

Extended-mobility tire with anchoring zone of substantially low modulus

A tire having a radial carcass reinforcement winding within each bead around at least one heel reinforcement element and whose meridian profile, when the tire is mounted and inflated, has a constant direction of curvature in a first bead and a sidewall extending it radially, and has a tangent TT&prime; to the point of tangency T of the carcass reinforcement profile with the annular element of the first bead which forms with the axis of rotation an angle &phgr; which is open towards the outside and is greater than 45&deg;, wherein, viewed in meridian section, at least the aforesaid sidewall comprises a reinforcing profiled element having, viewed in section, substantially the form of a crescent, one of the axially inner or outer faces of the crescent-shaped profiled element follows the profile of the carcass reinforcement, and the trace of the face of the crescent-shaped profiled element opposite the face of such profiled element closest to the carcass reinforcement has a single direction of curvature.

Tire comprising a reinforcing profiled element in at least one sidewall, and tire/rim assembly comprising such a tire

The invention relates to a novel tire having beads of a specified structure. In particular, the tire, when viewed in meridian section, has a radial carcass reinforcement and a bead of specified structure. The bead features a reinforcement ring that is able to move axially. The tire also features structures that are responsive to axial movement of the reinforcement ring, which modify clamping of the bead on its rim causing the clamping to increase with increasing tension of the carcass reinforcement.

Tire having beads of specified structure

A tire has a radial carcass reinforcement having a bead, the seat of which is inclined towards the outside, the bead heel axially to the inside and reinforced by at least one reinforcement element, the bead toe axially to the outside and having a profiled element of rubber mix in the form of a wedge defined by two sides, the mix having a Shore A hardness greater than the Shore A hardness of the rubber mixes radially above, wherein the reinforcement winds around the annular element to form an upturn, the end of which is located axially to the outside of a straight line P perpendicular to the axis of rotation and passing through the center of gravity of the meridian section of the element, and axially to the inside and radially to the outside of the straight line P supporting the radially outer side of the profiled element.

Tire having beads of improved structure

The invention concerns a light safety support ( ) for a tire comprising a base ( ), a top ( ) and an annular linking body ( ) with a continuous support element around the circumference and a circumferential median plane, wherein the support element includes a plurality of partitions ( ), ( ) extending axially on either side of the circumferential median plane that are adapted in their central part relative to their lateral end parts to reinforce the support buckling strength under a radial load.

Lightened safety support for tire

A tire having a radial carcass reinforcement of low H/S ratio, at least one bead provided with an axially outer protuberance, the maximum axial width of which is greater than the space taken up by the rim, characterized in that the protuberance is provided with incisions of a width other than zero, of a depth of at most 5 mm and arranged circumferentially parallel to each other.

Tire having a striated bead protuberance

A tire ( ), a mounting rim ( ) therefor and a circumferentially unstretchable ring ( ) for supporting the tread ( ) of the tire when running at low or zero pressure. The tire ( ) has a radial ply casing ( ) on which the points that are furthest apart axially are radially apart close to seats ( B) of outwardly sloping beads ( ). The seats ( B) engage sloping seats ( ) on the rim ( ), which may have at least one mounting well ( ), at least one cylindrical portion ( ) for receiving the supporting ring ( ) and rim flange ( ).

Radial tire with axially outer bead tip

A rim having a bearing support located between its two rim seats, which bearing support is intended to receive a support ring, is characterized in that this bearing surface comprises at least one surface clamping part, each surface clamping part being regularly distributed in the circumferential direction over the bearing surface and having a maximum external development Ds, measured on an enveloping surface concentric to the bearing surface, which is greater than the development Dp of the bearing surface, in order to create mechanical clamping between a support ring and the surface clamping part which is appropriate to ensure holding of the ring on the bearing surface during travel.

Rim intended to receive a support ring

A tire with a radial carcass reinforcement, when viewed in meridian section, includes a first bead, the seat of which is inclined towards the outside, the heel of the bead being axially on the inside and being reinforced by at least a reinforcement ring, the toe of the bead being axially on the outside and having a rubber wedge section made of rubber mix, the wedge being defined by two sides, the said rubber mix having a Shore A hardness greater than the Shore A hardness(es) of the rubber mixes located axially and radially above the bead ring and above the rubber wedge section. The carcass reinforcement is wound around the bead ring, passing from the inside to the outside to form an upturn extending along the radially inner side of the rubber wedge section, then along the side opposite the apex A, and then covering axially and radially, at least in part, the outside of the rubber section above the wedge section, the said upturn having an end located radially above the reinforcement annular ring of the bead and axially between the straight line P,extending the radially outer side of the wedge section and the straight line P,perpendicular to the axis of rotation and tangent at N to the said annular ring.

A tire (1), a mounting rim (2) therefor and a circumferentially unstretchable ring (3) for supporting the tread (10) of the tire when running at low or zero pressure. The tire (1) has a radial ply casing (13) on which the points that are furthest apart axially are radially apart close to seats (12B) of outwardly sloping beads (12). The seats (12B) engage sloping seats (23', 23') on the rim (2), which may have at least one mounting well (22), at least one cylindrical portion (21) for receiving the supporting ring (3) and a rim flange (24).

Growing community of inventors

Volvic, France

Jean-Jacques Drieux