Pneumatic radial tires

Details Pneumatic radial tires Pneumatic radial tires

1982-09-24

1984-03-13

Powell, William A.

Resilient tires and wheels

Tires, resilient

Patches

57902, 152356R, 152361DM, 152374, B60C 900

Patent

active

044361319

ABSTRACT:
A pneumatic radial tire is disclosed, which comprises as a reinforcement a belt consisting of a first belt body composed of a single ply containing metal twisted cords arranged at an inclination angle of 5.degree.-25.degree. with respect to the equatorial plane of the tire and embedded in a coating rubber, both end portions in widthwise direction of which being folded on the remaining central base portion thereof, and a second belt body composed of at least one rubberized ply containing inextensible cords crossed with the cords in the base portion of the first belt body. In the first belt body, the coating rubber has a dynamic modulus of 160-400 kg/cm.sup.2 and a gauge of rubber interposed between the cords in the base portion and the cords in the folded portion is within a range of 1.3-4.5 times an average diameter of the cords and is not less than 2 times a gauge of the coating rubber located outside the cords in the base portion opposite to the folded portion.

REFERENCES:
patent: 4258774 (1981-03-01), Mirtain et al.
patent: 4286645 (1981-09-01), Boileau

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