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:
Apr. 12, 2016
Filed:
May. 27, 2009
Akiyoshi Shimizu, Kodaira, JP;
Akiyoshi Shimizu, Kodaira, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
An object of the present invention is to provide a tire possessing improved partial wear resistance by optimizing shapes and dimensions of a block land portion and its position and arrangement. The tire has plural block land portion arraysformed by a large number of block land portionsdefined on a tread portion. Between two block land portion arrayslocated adjacent to each other across the circumferential groove, the block land portionsconstituting the block land portion arraysare arranged on the tread portionso as to be positionally displaced from each other in the circumferential direction of the tire; a groovebetween the block land portions adjacent to each other in the width direction of the tire extends obliquely with respect to the width and circumferential directions of the tire. At this time, the distance dbetween the block land portions adjacent to each other in the width direction of the tire is shorter than the distance dbetween the block land portions adjacent to each other in the circumferential direction of the tire. Further, a length dof the block land portionin the circumferential direction of the tire falls within a range of 1.0 to 2.5% of a circumferential length of the tire.