Pneumatic tire having a tread constructed of at least two kinds

Details Pneumatic tire having a tread constructed of at least two kinds Pneumatic tire having a tread constructed of at least two kinds

1980-12-01

1983-05-31

Kimlin, Edward C.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152360, 152374, B60C 100, B60C 1100, B60C 1106

Patent

active

043856535

ABSTRACT:
A pneumatic radial-ply tire having a tread constructed of at least two kinds of rubber which is capable of attaining both braking performance and rolling resistance. The tread portion is constructed so that the tread center zone is comprised of a rubber having a low hysteresis loss and the tread side zones adjacent to the center zone on both sides thereof or the outer layers of them are each comprised of a rubber having a high hysteresis loss; the tread center zone and the tread side zones are disposed in parallel to each other in the circumferential direction or the tread side zones are each disposed adjoining to the tread center zone and in a superposing manner.

REFERENCES:
patent: 2224141 (1940-12-01), Clark
patent: 3364965 (1968-01-01), Oubridge
patent: 4319620 (1982-03-01), Knill
"Automobile Tyres" by L. J. K. Setright, Chapman and Hall (London 1972), pp. 36-39.
"Tread Wear and Wet Skid Resistance of Butadiene-Styrene Elastomers and Blends" by Kienle, Dizon, Brett and Eckert, 44 Rubber Chemistry and Technology 996 (1971).
"Abrasion Resistance of . . . Butadiene Rubber Treads" by Evstratov et al, 41 Rubber Chemistry and Technology 685 (1968).
C. M. Blow, "Rubber Technology and Manufacture", CRC Press, 1971, pp. 346-347.

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