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AssigneeMichelin Recherche et Technique S.A.
InventorsYves Herbelleau, Bernard Guerinon, Pierre Roux
Estimating the term…
A tire comprising a crown, two sidewalls and two beads, a carcass reinforcement anchored in each of the beads and a crown reinforcement. The carcass reinforcement comprises at least two circumferential alignments of first reinforcing threads of high elasticity modulus, each circumferential alignment of the first reinforcing threads being, within each bead, bordered axially inwardly and axially outwardly by second reinforcing threads, oriented substantially circumferentially, of a modulus greater than or equal to that of the first reinforcing threads. The first reinforcing threads and second reinforcing threads are separated by a layer of mix of very high elasticity modulus. Considering ΣRI as being the total of the rigidities of extension of the second reinforcing threads arranged axially inwardly relative to the carcass reinforcement and considering ΣRE as being the total of the rigidities of extension of the second reinforcing threads arranged axially on either side of the carcass reinforcement, then: 0.6 ≤ Σ R I Σ R E ≤ 1.5
A tire, comprising a crown, two sidewalls and two beads, a carcass reinforcement anchored in each of the beads and a crown reinforcement, wherein the carcass reinforcement comprises at least two circumferential alignments of first reinforcing threads of high elasticity modulus, each circumferential alignment of said first reinforcing threads being, within each bead, bordered axially inwardly and outwardly by windings of second reinforcing threads oriented substantially circumferentially of a modulus greater than or equal to that of said first reinforcing threads, said first reinforcing threads and said windings of second reinforcing threads being separated by a layer of rubber mix of very high elasticity modulus, and wherein, where ΣR1 is the total of the rigidities of extension of the windings of second reinforcing threads arranged axially inwardly relative to the carcass reinforcement and ΣRE is the total of the rigidities of extension of the windings of second reinforcing threads arranged axially on either side of the carcass reinforcement:
Dependencies are inferred from the claim text.