Radial tire having sidewalls reinforced with a rubbery mixture having a high modulus
AssigneePneumatiques, Caoutchouc Manufacture et Plastiques Kleber-Colombes
InventorYves Masson
Life of this patent
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Abstract
A tire with a radial carcass and a top belt under the tread, has sidewalls which are reinforced by layers of a rubbery mixture exhibiting a high modulus of elasticity and extending over the entire height of the sidewalls. The upper edges of these reinforcement layers are inserted between the carcass and the lateral edges of the belt.
Claims9
A tire comprising a tread, a radial carcass formed of at least one of cord fabric, a top belt located under the tread of the tire, and sidewalls having external sidewall strips, said sidewalls including at least two reinforcing layer comprised of a reinforced rubber mixture exhibiting anisotropy of at least 2:1 with a modulus of elasticity of at least 200 kg/cm.sup.2 at 100% elongation in the direction of the strongest resistance to elongation, the directions of the strongest resistance of each of the reinforcing layers being crossed at angles on the order of 20.degree.-70.degree. with respect to the cords of the radial carcass, said reinforcing layers being more extensible than said radial carcass and being placed under said sidewall strips and extending over the entire height of each of the sidewalls and the upper end portions of said reinforcing layers being inserted between the carcass and the lateral edges of the belt for a distance of approximately 15 to 35 mm.
Dependencies are inferred from the claim text.