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:
Nov. 11, 2014
Filed:
Feb. 17, 2009
Takashi Ookawara, Tokyo, JP;
Kenichi Shibata, Tokyo, JP;
Takashi Ookawara, Tokyo, JP;
Kenichi Shibata, Tokyo, JP;
Kabushiki Kaisha Bridgestone, Tokyo, JP;
Abstract
A pneumatic tire capable of reducing air column resonance arising from circumferential grooves without changing the shape of unilaterally open-ended lug grooves. Lug groovesare formed in land portions, which are defined by the circumferential grooves, and each of the lug groovesconsists of a lateral groove portion, which extends axially to open at one end into the circumferential groove and communicate at the other end with a sub-grooveprovided in the land portion, and an oblique groove portion, which extends in a direction intersecting with the tire axial and circumferential directions to communicate at one end with the sub-grooveand terminate at the other end within the land portion. Also, the lateral groove portionof the lug grooveis provided with a projectionprotruding toward the tread surface from the bottom of the lug grooveand having a height smaller than the height H of the land portionas measured from the bottom of the lug groove