Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2018094994
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pneumatic tire that combines ice performance with dry performance by suppressing deterioration in block rigidity caused by providing many sipes.SOLUTION: A plurality of sipes A and B formed in a tread portion of a block T formed in a tire tread portion are constituted of first sipes A and second sipes B. Groove depths H4 at center regions of the first sipes A and the second sipes B are formed deeper than groove depths H2 at both end portions thereof. The groove depths H2 of the first sipes A are formed shallower than a groove depth G of a main groove partitioning the block T. The groove depths H3 at the center regions of the second sipes B are formed shallower than the groove depths H1 at the center regions of the first sipes A, and the groove depths H4 at both end portions of the second sipes are formed deeper than the groove depths H2 at both end portions of the first sipes A. The first sipes A are arranged at both side portions in a tire circumferential direction in the block T.SELECTED DRAWING: Figure 1
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Inventors:
TAKAHASHI MAYUKO
Application Number:
JP2016239598A
Publication Date:
June 21, 2018
Filing Date:
December 09, 2016
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO
International Classes:
B60C11/12
Domestic Patent References:
| JPH0392403A | 1991-04-17 | |||
| JP2010274846A | 2010-12-09 | |||
| JPH02200503A | 1990-08-08 | |||
| JPH04230407A | 1992-08-19 |
Foreign References:
| WO2012072404A1 | 2012-06-07 | |||
| EP1616721A1 | 2006-01-18 |
Attorney, Agent or Firm:
Masato Tsuda
Tetsuji Nakamura
Katsuyuki Tomita
Ariyoshi Yasuomi
Ryu Maesawa
Mizutori Masahiro
Tamako Tsutada
Tetsuji Nakamura
Katsuyuki Tomita
Ariyoshi Yasuomi
Ryu Maesawa
Mizutori Masahiro
Tamako Tsutada