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. 13, 2015
Filed:
Jul. 16, 2009
Akira Nakamizo, Higashiyamato, JP;
Akira Nakamizo, Higashiyamato, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
An object of the invention is to provide a tire and a method of producing the tire, in which tire breakage of a groove fence in vulcanization molding and generation of cracks at a groove bottom can be suppressed, noise is relatively low and uneven wear is less likely to occur. At least one of a groove wallsurface of the circumferential grooveand a side wallsurface of a stepped land portionis provided with a groove fencewhich are formed in the extending direction of the circumferential groove at a predetermined intervals therebetween such that the groove fence protrudes in the groove widthwise direction of the circumferential groove. The groove fenceis characterized in that: it has a thin wall portionhaving a shape in which a portionthereof on the side of the groove bottom of the circumferential groove has been notched in a section orthogonal to the circumferential groove; and an angle formed by a notched faceof the thin wall portionwith respect to the at least one of the wall surfacesprovided with the groove fenceis set at 70° or smaller.