Bead for a tire for a civil-engineering heavy vehicle

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United States of America Patent

PATENT NO 11590809
APP PUB NO 20210309052A1
SERIAL NO

17262651

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Abstract

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Improving the endurance of the beads (1) of a radial tire for a civil-engineering heavy vehicle by proposing a solution which blocks the propagation of the cracks initiated in the coating elastomer of the bead reinforcing layer (5), by inserting a cushion rubber (6) interposed between the coating elastomer of the carcass layer turn-up (312) and the coating elastomer of the bead reinforcing layer (5). The elastic modulus in extension of the cushion rubber (6) measured at 100% deformation must be less than the elastic modulus of the coating compound of the carcass layer. Still according to a disclosed embodiment, the thickness of the cushion rubber (6) is at least equal to the thickness of the bead reinforcing layer (5).

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Patent Owner(s)

  • COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Estenne, Vincent Clermont-Ferrand, FR 12 5

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