PNEUMATIC TYRE RADIAL CASING WITHOUT BEAD CORE AND METHOD OF ITS MANUFACTURE Russian patent published in 1999 - IPC

Abstract RU 2138402 C1

FIELD: tyre industry; road vehicles. SUBSTANCE: each bead of tyre casing has following characteristics: it has no bead core and it includes ring-shaped member whose tensile strength is considerably lower than value required for bead core. At least two reinforcement layers of cord are arranged either in contact with ring-shaped member or close to number. Tensile strength of reinforcement layers is not less than tensile strength required for bead core. Carcass cord layer is wound on ring-shaped member. Upper ends of reinforcement layers are arranged at different heights in tyre bead. EFFECT: facilitated manufacturing of tyre casing. 8 cl, 4 dwg

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RU 2 138 402 C1

Authors

Mishel' Auanto

Dates

1999-09-27Published

1995-03-15Filed