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:
Aug. 23, 2011
Filed:
Dec. 04, 2007
Yasuo Mitarai, Kobe, JP;
Takaaki Ishida, Kobe, JP;
Yasuo Mitarai, Kobe, JP;
Takaaki Ishida, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
A runflat tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions each having a bead core therein, a carcass extending between the bead cores, and a sidewall reinforcing rubber disposed axially inside the carcass in each sidewall portion, wherein each sidewall reinforcing rubber is provided with a plurality of grooves extending on an axially inner surface thereof, each groove has a radially outer end and a radially inner end within the inner surface of the sidewall reinforcing rubber, the grooves are arranged in a circumferential direction of the tire, a length of the groove is in a range of from 30 to 50 mm, a width of the groove is in a range of from 10 to 20 mm and a circumferential pitch of the groove is in a range of from 25 to 60 mm.