TIRE - BRIDGESTONE CORP

Title:

TIRE

Document Type and Number:

WIPO Patent Application WO/2018/235464

Kind Code:

A1

Abstract:

Provided is a tire having at least one linearly extending sipe formed in at least one land. The sipe includes: first widened sections which are the portions of the sipe, which have a width increasing in a direction intersecting the direction in which the sipe extends, the portions extending continuously in the depth direction of the sipe from a tread surface; and a second widened section which is the portion of the sipe, which has a width increasing in a direction intersecting the direction in which the sipe extends, the portion extending continuously in a direction intersecting at least one of the first widened sections. In a cross-section perpendicular to the direction in which the sipe extends, the sipe has at least one bend, and at least one of the bends has a widened section formed by increasing the width of sipe portions sandwiching the at least one of the bends. At least one of the widened sections has a rectilinear portion in the reflex angle-side wall surface of a bend among the wall surfaces defining the at least one of the widened sections, the angle formed between the rectilinear portion and a line perpendicular to a line normal to the tread surface at the center of the opening of the sipe being 30º or greater.

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Inventors:

KAJI YOSHIO (JP)

Application Number:

PCT/JP2018/018982

Publication Date:

December 27, 2018

Filing Date:

May 16, 2018

Export Citation:

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Assignee:

BRIDGESTONE CORP (JP)

International Classes:

B60C11/12

Domestic Patent References:

WO2015185236A1

2015-12-10

Foreign References:

JPH02310108A	1990-12-25
JP2012501914A	2012-01-26
JPH1086612A	1998-04-07
JP2006082651A	2006-03-30
JP2012510921A	2012-05-17
JP2006298057A	2006-11-02
JP2013244812A	2013-12-09

Other References: