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:
Dec. 25, 2012
Filed:
Aug. 05, 2008
Takao Wada, Kobe, JP;
Takao Wada, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
Accumulation of static electricity is prevented while enhancing rolling resistance performance of tire. Tread rubberG has tread rubber bodyforming tread ground contact surfaceS, under treaddisposed radially inward of the tread rubber body, and terminal portionpenetrating the tread rubber body in the radial direction, the under treadbeing in contact with cushion rubberseach having cushion main portionA interposed between edge portionE of tread-reinforcing layerand carcassover an overlap width Wof 1 mm or more. Tread rubber body, topping rubberG of tread-reinforcing layerand sidewall rubbersG are made of an insulating rubber materialhaving a volume resistivity of at least 1×10Ω·cm, and under tread, terminal portion, cushion rubber, topping rubberG of carcassand chafer rubberare made of a conductive rubber material having a volume resistivity of less than 1×10Ω·cm.