Base-cap tread

Details Base-cap tread Base-cap tread

1985-12-05

1988-04-05

Ball, Michael

Resilient tires and wheels

Tires, resilient

Anti-skid devices

B60C 100

Patent

active

047352477

ABSTRACT:
A pneumatic tire having a tread of a lug type pattern is disclosed. In this type of the tire, the tread rubber has a composite structure of a cap rubber and a base rubber having a heat build-up property lower than that of the cap rubber and arranged on at least a shoulder portion of the tread just beneath the cap rubber. The base rubber has a thickness that an average thickness just beneath the lug is larger than that just beneath the lug groove in a conical plane imaged by taking as a general line a normal line drawn from the tread end to the inner surface of the tire in the radial section inclusive of a rotational axis of the tire.

REFERENCES:
patent: 4274462 (1981-06-01), Ogawa et al.
patent: 4407346 (1983-10-01), Bandel et al.
patent: 4588009 (1986-05-01), Kitazawa et al.
patent: 4603721 (1986-08-01), Kogure et al.

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