The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2010
Filed:
Feb. 18, 2005
Kazuo Hochi, Kobe, JP;
Kazuo Hochi, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe-shi, JP;
Abstract
The present invention provides a rubber composition for a bead, which has excellent processability and is capable of decreasing heat generation while maintaining rubber hardness, and a pneumatic tire having improved balance in fuel efficiency and steering stability. Specifically, the present invention provides a rubber composition for a tire bead comprising (B) 10 to 100 parts by weight of carbon black having nitrogen-adsorbing specific surface area of 30 to 100 m/g and dibutyl phthalate adsorption of 40 to 200 ml/100 g, and (C) 5 to 120 parts by weight of a think plate-like natural mineral having aspect ratio of 3 to 30 and average particle size of 2 to 30 μm, based on (A) 100 parts by weight of a rubber component.