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:
Jan. 31, 2017
Filed:
Mar. 01, 2012
Takashi Oono, Kodaira, JP;
Takashi Oono, Kodaira, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
In the tire (), a region of the tread portion () overlapping with a range of 80% of a length of the circumferential belt layer () in a tread widthwise direction around a tire equator line CL is a central region CR in the tire radial direction trd, and a remaining region of the tread portion () is a terminal region TR, a maximum curvature radius of the arc portion of the central circumferential grooveis R1, a minimum curvature radius of the arc portion of the terminal circumferential grooveis R2, a maximum depth in the tire radial direction trd from the tread surface () to a groove bottomof the central circumferential grooveis D1, a maximum depth in the tire radial direction trd from the tread surface () to a groove bottomof the terminal circumferential grooveis D2, and a relationship of R1/D1≦0.130 and a relationship of R2/D2>0.195 are satisfied.