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Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2018131125
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pneumatic tire which can make both improvement in steering stability performance on a dry road surface and improvement in steering stability performance on a wet road surface compatible by devising a shape of chamfering of a sipe.SOLUTION: Sipes 11 have an edge 11A at a step-in side and an edge 11B at a kick-out side. Chamfering parts 12 shorter than a sipe length L of the sipes 11 are formed in the edge 11A at the step-in side and the edge 11B at the kick-out side respectively. There are non-chamfering areas 13 where the other chamfering parts do not exist, in sites opposing to chamfering parts 12 respectively in the sipes 11. In all chamfering parts including the chamfering parts 12 of the sipes 11, chamfer parts formed in grooves other than main grooves 9, total projection areas Aof the chamfering parts included in a center region CE positioned at the center side in a tire width direction when a grounding width TW is divided into three equal widths in the tire width direction and each projection area Aof the chamfering parts included in shoulder regions SH positioned at both sides of the center region CE satisfy a relational expression of A

Inventors:
UEMURA TAKANORI
SHIRAISHI TAKAYUKI
KODA HIRAKU
NIIZAWA TATSURO
Application Number:
JP2017027543A
Publication Date:
August 23, 2018
Filing Date:
February 17, 2017
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
B60C11/12; B60C11/03
Domestic Patent References:
JP2017001584A2017-01-05
JP2015047977A2015-03-16
JP2015140047A2015-08-03
JP2015160487A2015-09-07
JP2013035345A2013-02-21
Foreign References:
WO2015083474A12015-06-11
US20130248068A12013-09-26
Attorney, Agent or Firm:
Seiryu International Patent Service Corporation
Takayoshi in the daytime
Masao Sakaizawa



 
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