Heavy duty pneumatic radial tires

Details Heavy duty pneumatic radial tires Heavy duty pneumatic radial tires

1984-04-30

1985-07-02

Boland, Lois E.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

152534, 152536, B60C 920

Patent

active

045262179

ABSTRACT:
A heavy duty pneumatic radial tire is disclosed, which comprises a carcass composed of at least one rubberized ply containing cords arranged substantially in a radial plane of the tire and a belt superimposed about a crown portion of the carcass just beneath a tread and composed of at least three rubberized belt plies. In this tire, metal cords of a first belt ply nearest to the carcass among the above belt plies are arranged at an angle of 25.degree.-50.degree. without crossing with metal cords of a second belt ply near the carcass next to the first belt ply with respect to a central circumferential line of the tire, and metal cords of the second belt ply and a third belt ply near the carcass next to the second belt ply, a tensile strength of each of which being 1.5-2 times that of the metal cord of the first belt ply, are arranged at an angle of 10.degree.-30.degree. and smaller than the cord angle of the first belt ply with crossing with each other between these two belt plies with respect to the central circumferential line of the tire.

REFERENCES:
patent: 3717191 (1973-02-01), Harrington et al.
patent: 3896869 (1975-07-01), Fujishima
patent: 4169495 (1979-10-01), Maiocchi
patent: 4235274 (1980-11-01), Suzuki et al.
patent: 4310043 (1982-01-01), Inoue
patent: 4446905 (1981-10-01), Tamura et al.

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