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. 09, 2011
Filed:
Oct. 28, 2004
Arata Tomita, Kodaira, JP;
Arata Tomita, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A pneumatic tire where the positions of the groove deepest portions () in the circumferential grooves () vary in a predetermined cycle along the circumferential direction in a width direction of the tread within the circumferential grooves (). Moreover, depth direction positions, where a groove bottom surface of the circumferential groove () contacts with each of perpendicular lines (perpendicular line P, perpendicular line P) which are perpendicular or approximately perpendicular to a tread surface and which pass respectively through edges (edge portion, edge portion) of the land portions on a side of each of the circumferential grooves of ribs, as well as angles which are formed by the perpendicular lines and a section line of a cross-section of the groove bottom surface in the width direction of the tread surface vary in the predetermined cycle along the circumferential direction. In the pneumatic tire, uneven wear of the tire caused by lateral force applied in a width direction of a tread is suppressed and wet performance is improved.