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Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2022/030253
Kind Code:
A1
Abstract:
Provided is a pneumatic tire for which rolling resistance at high speed traveling is sufficiently reduced and durability is sufficiently improved.　The pneumatic tire has a side part, a thickness S (mm) of a rubber layer radially outside a carcass on the side part at the maximum tire width position is 3 mm or less, the loss tangent of the rubber layer measured under the conditions of 70°C, a frequency of 10 Hz, an initial distortion of 5%, and a dynamic distortion rate of 1% is 0.15 or less, and when the cross-sectional width of the tire is Wt (mm) and the outer diameter is Dt (mm) when mounted on a regular rim and the internal pressure is 250 kPa, the volume of the space occupied by the tire is the virtual volume V (mm3), (Equation 1) and (Equation 2) are satisfied.　1700 ≦ (Dt2 × π/4)/Wt ≦ 2827.4 (Equation 1) [(V + 1.5 × 107)/Wt] ≦ 2.88 × 105 (Equation) 2)

Inventors:
HAMAMURA KENJI (JP)
KAWAI HIROKI (JP)
TOYA SUBARU (JP)
Application Number:
PCT/JP2021/027204
Publication Date:
February 10, 2022
Filing Date:
July 20, 2021
Export Citation:
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Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C1/00; B60C3/04; B60C13/00
Domestic Patent References:
WO2015159538A12015-10-22
WO2018186367A12018-10-11
Foreign References:
JPH08216629A1996-08-27
JP2010195059A2010-09-09
JP2015033982A2015-02-19
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JP2010058782A2010-03-18
JP2016074283A2016-05-12
JP2013169817A2013-09-02
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JP2016074298A2016-05-12
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Other References:
TOA SYNTHETIC RESEARCH ANNUAL REPORT TREND2000, no. 3, pages 42 - 45
Attorney, Agent or Firm:
JODAI Tetsuji et al. (JP)
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