Pneumatic radial tires for heavy vehicles

Details Pneumatic radial tires for heavy vehicles Pneumatic radial tires for heavy vehicles

1985-06-26

1987-10-13

Czaja, Donald E.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

152541, 152546, 152547, 152554, B60C 1506

Patent

active

046991948

ABSTRACT:
A pneumatic radial type tire for heavy vehicles having improved durability in its bead section. This tire comprises at least one carcass ply of metallic cords arranged in a substantially radial direction of the tire, at least one chafer of rubberized metallic cords disposed at the outside of the turn-up portion of the carcass ply, one carcass reinforcing member of rubberized metallic cords secured to the inner surface of the carcass ply main portion in the bead section with respect to the axial direction of the tire, which is crossed with the carcass ply cords at an angle of 10.degree.-50.degree.. A portion of the carcass reinforcing member is interposed by a given width between the inner turn-up portion of the aforesaid metallic cord chafer and the carcass ply main portion at the axial inner side of the bead core, a buffer of a composite soft rubber stock with JIS hardness of 45 to 65 is disposed on the bead core between the carcass ply and its turn-up portion and extends outwardly gradually decreasing in thickness to form a substantially triangular section in the radial direction of the tire.

REFERENCES:
patent: 3789900 (1974-02-01), Verdier
patent: 3964533 (1976-06-01), Arimura et al.
patent: 4100955 (1978-07-01), Pottinger et al.
patent: 4215737 (1980-08-01), Motomura et al.
patent: 4234029 (1980-11-01), Peter et al.
patent: 4319622 (1982-03-01), Iuchi et al.
patent: 4342353 (1982-08-01), Tamura et al.
patent: 4352383 (1982-10-01), Matsumoto et al.

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