Tire with a protective crown ply made of very high twist aramid fiber
AssigneeMichelin Recherche et Technique S.A.
InventorsYves Herbelleau, Hubert Pacherie, Jean-Luc Guerbert-Jubert, Philippe Esnault
Life of this patent
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Abstract
A tire comprising a crown, two sidewalls and two beads, a casing reinforcement anchored in each of the beads and a crown reinforcement, the crown reinforcement comprising radially, from the inside outwards, a working block and a protective block having at least one ply of circumferentially oriented parallel reinforcing threads, characterized in that the protective block ply consists of aromatic polyamide reinforcing threads with an initial modulus of less than 1000 cN/tex and a tenacity of greater than 65 cN/tex.
Claims20
A tire comprising a crown, two sidewalls and two beads, a casing reinforcement anchored in each of the beads and a crown reinforcement, said crown reinforcement comprising radially, from the inside outwards, a working block and a protective block having at least one ply of substantially circumferentially oriented parallel reinforcing threads, wherein said at least one ply of said protective block consists of aromatic polyamide reinforcing threads with an initial modulus of less than 1000 cN/tex and a tenacity of greater than 65 cN/tex.
A tire comprising a crown, two sidewalls and two beads, a casing reinforcement anchored in each of the beads and a crown reinforcement, said crown reinforcement comprising radially, from the inside outwards, a working block and a protective block having at least one ply of substantially circumferentially oriented parallel reinforcing threads, wherein said at least one ply of said protective block consists of aromatic polyamide reinforcing threads which are such that the helix angle of said reinforcing threads is greater than 28 degrees.
An aircraft tire comprising a crown, two sidewalls and two beads, a casing reinforcement anchored in each of the beads and a crown reinforcement, said crown reinforcement comprising radially, from the inside outwards, a working block and a protective block having at least one ply of substantially circumferentially oriented parallel reinforcing threads, wherein said at least one ply of said protective block consists of aromatic polyamide reinforcing threads with an initial modulus of less than 1000 cN/tex and a tenacity of greater than 65 cN/tex.
A heavy goods vehicle tire comprising a crown, two sidewalls and two beads, a casing reinforcement anchored in each of the beads and a crown reinforcement, said crown reinforcement comprising radially, from the inside outwards, a working block and a protective block having at least one ply of substantially circumferentially oriented parallel reinforcing threads, wherein said at least one ply of said protective block consists of aromatic polyamide reinforcing threads with an initial modulus of less than 1000 cN/tex and a tenacity of greater than 65 cN/tex.
Dependencies are inferred from the claim text.