Pneumatic radial tires for passenger cars having a low rolling r

Details Pneumatic radial tires for passenger cars having a low rolling r Pneumatic radial tires for passenger cars having a low rolling r

1980-08-18

1982-09-14

Kimlin, Edward C.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152353R, 152360, 152362R, 152374, B60C 1300, B60C 1506, B60C 100

Patent

active

043490611

ABSTRACT:
A pneumatic radial tire for passenger cars having a low rolling resistance is disclosed. The radial tire comprises a body reinforcement including a toroidal carcass composed of radially arranged cords and a belt superimposed about the carcass and consisting of plural rubberized plies each containing cords arranged at 60.degree.-80.degree. with respect to the radial plane of the tire, which cords of said plies being crossed with each other, and a bead reinforcement wherein the carcass is wound around a bead core to form a turnup portion, thread and sidewall rubbers covering these reinforcements. In the radial tire, a super-hard bead filler rubber is arranged at a region extending from the bead core to the middle part of the side portion, and a base rubber having a low loss modulus and a high resilience is arranged on at least both side edge parts of the belt at a volume ratio in the coating rubber for tread portion of 0.1-0.5.

REFERENCES:
patent: 1769694 (1930-07-01), Jenkinson
patent: 3157218 (1964-11-01), Brown
patent: 4250939 (1981-02-01), Shibata et al.
patent: 4274462 (1981-06-01), Ogawa et al.
Ambelang, "Compositional Variables Affecting Dynamic Properties of Tire Compounds", Journal of Elastomers & Plastics, vol. 9 (Oct. 1977), pp. 384-394.

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