Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2022/025006
Kind Code:
A1
Abstract:
The present invention provides a pneumatic tire which is sufficiently reduced in the rolling resistance during high-speed travel, while having sufficiently improved chipping resistance. A pneumatic tire which has a tread part, wherein: at least one rubber layer that forms the tread part contains a rubber component that contains an isoprene rubber, a styrene butadiene rubber and a butadiene rubber, while containing more than 5 parts by mass but not more than 25 parts by mass of carbon black relative to 100 parts by mass of the rubber component; and if Wt (mm) is the cross-sectional width of the tire, Dt (mm) is the outer diameter of the tire, and V (mm3) is the virtual volume that is the volume of the space occupied by the tire when this pneumatic tire is mounted on a regular rim and the internal pressure is set to 250 kPa, (formula 1) and (formula 2) are satisfied. (Formula 1): 1700 ≤ (Dt2 × π/4)/Wt ≤ 2827.4
Inventors:
HAMAMURA KENJI (JP)
KAWAI HIROKI (JP)
TOYA SUBARU (JP)
KAWAI HIROKI (JP)
TOYA SUBARU (JP)
Application Number:
PCT/JP2021/027581
Publication Date:
February 03, 2022
Filing Date:
July 26, 2021
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C1/00; B60C3/04; B60C11/00; B60C11/13
Domestic Patent References:
| WO2018186367A1 | 2018-10-11 |
Foreign References:
| JP2017052330A | 2017-03-16 | |||
| JP2017052329A | 2017-03-16 | |||
| JP2017206194A | 2017-11-24 | |||
| JP2016094552A | 2016-05-26 | |||
| JP2016074408A | 2016-05-12 | |||
| JP2017052361A | 2017-03-16 | |||
| CN109627509A | 2019-04-16 | |||
| US20080264543A1 | 2008-10-30 | |||
| US20180126785A1 | 2018-05-10 | |||
| JP2018178034A | 2018-11-15 | |||
| JP2019089911A | 2019-06-13 | |||
| JP2019206643A | 2019-12-05 | |||
| JP2010111753A | 2010-05-20 | |||
| US4414370A | 1983-11-08 | |||
| JPS596207A | 1984-01-13 | |||
| JPH0558805A | 1993-03-09 | |||
| JP2007313522A | 2007-12-06 | |||
| US5010166A | 1991-04-23 |
Other References:
TOA SYNTHETIC RESEARCH ANNUAL REPORT TREND, no. 3, 2000, pages 42 - 45
Attorney, Agent or Firm:
JODAI Tetsuji et al. (JP)
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