Pneumatic radial tire for heavy load vehicles

Details Pneumatic radial tire for heavy load vehicles Pneumatic radial tire for heavy load vehicles

1981-06-02

1983-01-04

Kimlin, Edward C.

Resilient tires and wheels

Tires, resilient

Patches

152359, 152362R, 152362CS, 152354R, B60C 1506, B60C 908

Patent

active

043668518

ABSTRACT:
A pneumatic radial tire for heavy load vehicles comprising a body reinforcement and a bead portion reinforcement, in which the bead portion reinforcement substantially continuously covers the carcass ply wound around a bead core up to the inside of the tire, the upper end of the turn-up portion of the carcass ply and the outside upper end of the bead portion reinforcement covering the upper end of the carcass ply are arranged at an area other than a bead portion flexible region defined by two segments BC and AD as shown in attached FIG. 3, the bead portion reinforcement makes use of a cord having a modulus which corresponds to 15 to 60% of that of the ply cord of the carcass, and a tension at 100% elongation of a soft stiffener corresponds to 5 to 30% of that of a hard stiffener, the soft and hard stiffeners being disposed on the bead core one upon the other.

REFERENCES:
patent: 3612137 (1971-10-01), Guyot
patent: 3682223 (1972-08-01), Simpson
patent: 3722568 (1973-03-01), Maiocchi
patent: 4086948 (1978-05-01), Suzuki et al.
patent: 4120338 (1978-10-01), Mirtain
patent: 4185677 (1980-01-01), Motomura et al.
patent: 4214620 (1980-07-01), Mezzanotte

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