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:
Oct. 04, 2022
Filed:
May. 16, 2018
Applicant:
Bridgestone Corporation, Tokyo, JP;
Inventor:
Yoshio Kaji, Higashimurayama, JP;
Assignee:
BRIDGESTONE CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60C 11/12 (2006.01); B60C 11/03 (2006.01); B60C 11/11 (2006.01);
U.S. Cl.
CPC ...
B60C 11/1272 (2013.01); B60C 11/032 (2013.01); B60C 11/0323 (2013.01); B60C 11/1218 (2013.01); B60C 11/1281 (2013.01); B60C 11/0306 (2013.01); B60C 11/11 (2013.01); B60C 2011/0341 (2013.01); B60C 2011/1209 (2013.01);
Abstract
A sipe includes a first widened and a second widened portion. In a cross section orthogonal to the sipe extending direction, the sipe includes at least one bent portion, at least one bent portion has a widened portion where the width of sipe portions sandwiching the bent portion is increased, and at least one widened portion has a straight line portion, in which an angle formed with a line segment orthogonal to the normal line at the opening center of the sipe on the tread surface is 30° or more, in a wall surface on the major angle side of the bent portion of wall surfaces defining the widened portion.