Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Reexamination Certificate
2007-02-13
2007-02-13
Fischer, Justin R. (Department: 1733)
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
C152S517000
Reexamination Certificate
active
11052903
ABSTRACT:
The present invention provides a rubber composition for a tire, which achieves both low heat generating properties and high strength and improves durability of a run flat tire, and a run flat tire obtained using the rubber composition. Specifically, the present invention provides a rubber composition for a tire comprising 10 to 100 parts by weight of carbon black having nitrogen-adsorbing specific surface area of 30 to 100 m2/g and dibutyl phthalate oil absorption of at least 50 ml/100 g, and at least 2 parts by weight of a vulcanizing agent, based on 100 parts by weight of a rubber component containing 10 to 50% by weight of star-shaped solution polymerization butadiene rubber, and a run flat tire using the composition as the reinforcing rubber layer of the sidewall.
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Birch & Stewart Kolasch & Birch, LLP
Fischer Justin R.
Sumitomo Rubber Industries Ltd.
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