Truck tire with cap/base construction tread

Details Truck tire with cap/base construction tread Truck tire with cap/base construction tread

2006-04-18

2006-04-18

Maki, Steven D. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

Reexamination Certificate

active

07028734

ABSTRACT:
A pneumatic tire comprising a tread, the tread comprising a tread cap and a tread base in a tread base to tread cap volume ratio ranging from about 0.25 to about 1; the tread cap comprising, based on 100 parts by weight rubber (phr): 100 phr of cis 1,4 polyisoprene natural rubber; from about 25 to about 50 phr of carbon black; and from about 8 to about 35 phr of silica; the tread base comprising, based on 100 parts by weight rubber (phr): 100 phr of cis 1,4 polyisoprene natural rubber; from about 25 to about 50 phr of carbon black; and from about 8 to about 35 phr of silica; wherein the tread cap has a stiffness greater than that of the tread base.

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Derwent Abstract for KR 2003046542.
European Search Report.
Patent Abstract of Japan, vol. 2003, No. 09, for JP Application No. 2001328102.

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