Pneumatic tire having tread portion formed of two layers

Details Pneumatic tire having tread portion formed of two layers Pneumatic tire having tread portion formed of two layers

2006-08-01

2006-08-01

Maki, Steven D. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

Reexamination Certificate

active

07082976

ABSTRACT:
A pneumatic tire has a rubber member at least partially constituting a tread portion, which member is formed of at least two layers of an outer layer on a tire surface side and an inner layer on a carcass side. A blended amount (X) of an antioxidant in the outer layer is in a range of 0.4–1.6 weight % of an entire composition, and the blended amount (X) of the antioxidant in the outer layer and a blended amount (Y) of the antioxidant in the inner layer satisfy the expression: Y≧−0.4 X2+2X. Thus, a pneumatic tire suffering less rubber degradation and alleviated in discoloring of the tire surface in prolonged use is provided.

REFERENCES:
patent: 4257468 (1981-03-01), Ogawa et al.
patent: 4396052 (1983-08-01), Ahagon et al.
patent: 4580608 (1986-04-01), Rampl
patent: 4945964 (1990-08-01), Takiguchi et al.
patent: 5088537 (1992-02-01), Kan et al.
patent: 5181976 (1993-01-01), Iwafune et al.
patent: 6035911 (2000-03-01), Matsumoto et al.
patent: 6095217 (2000-08-01), Nakamura et al.
patent: 0 885 754 (1998-12-01), None
patent: 59-14502 (1984-01-01), None
patent: 63-112636 (1988-05-01), None
patent: 64-30806 (1989-02-01), None
patent: 4-85104 (1992-03-01), None
patent: 06-016012 (1994-01-01), None
patent: 06-191221 (1994-07-01), None
patent: 10-35212 (1998-02-01), None
patent: 11-278008 (1999-10-01), None
patent: 2001-30703 (2001-02-01), None

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