Tire with radial carcass reinforcement having specified turn-up
AssigneeCompagnie Generale des Etablissements Michelin - Michelin & Cie
InventorJean Billieres
Life of this patent
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Abstract
A tire has a radial carcass reinforcement which is anchored in each bead to a bead ring, going from the outside to the inside, forming a turn-up which is substantially parallel to the generatrix of the rim seat J on which the bead is mounted. Each turn-up is reinforced by at least one additional reinforcing ply of cords oriented at an angle between 0.degree. and 20.degree. with respect to the circumferential direction.
Claims4
A tire with radial carcass reinforcement (1) which is surmounted radially by a crown reinforcement, the tire being inflated to its recommended nominal pressure and mounted on its service rim, formed on each side by a rim flange (5) extended axially to the inside by a rim seat (6), the carcass reinforcement (1) being formed of at least one ply of threads or cords and being turned up in each bead around an anchoring bead ring (2), going from the outside to the inside, so as to form a turn-up (10), said turn-up (10) being reinforced by at least one additional reinforcement ply (4A, 4B) of cables oriented at an angle of between 0.degree. and 20.degree. with respect to the circumferential direction, the value 0.degree. being included within said range, the tire characterized by the fact that the meridian profile of said reinforced turn-up (10) is linear and substantially parallel to the meridian profile of at least the portion of the rim seat axially to the inside of the projection C' of the center (C) of the circle circumscribed on the bead ring onto said rim seat.
Dependencies are inferred from the claim text.