Title:
RUN-FLAT TIRE
Document Type and Number:
WIPO Patent Application WO/2021/117424
Kind Code:
A1
Abstract:
Provided is a run-flat tire that can suppress localized deformation even during run-flat traveling and improve run-flat durability. This run-flat tire has a reinforcement rubber layer 50 disposed on a sidewall 12, wherein: a part of the reinforcement rubber layer 50 is disposed inside a bead filter 22 in the tire width direction; in a cross-sectional view in the tire width direction, a tire radial distance Hb from a tire radial outer end 22A of the bead filler 22 to a tire radial inner end 50B of the reinforcement rubber layer 50 is 70% or more of a tire radial distance Ha from the tire radial outer end 22A to a tire radial inner end 22B of the bead filler 22; and within a range from the tire radial outer end 22A of the bead filter 22 to the tire radial inner end of the reinforcement rubber layer 50, a variation range of the total thickness obtained by summing the thickness of the bead filter 22 and the thickness of the reinforcement rubber layer 50 is 10% or less.
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Inventors:
INUI YUSUKE (JP)
Application Number:
PCT/JP2020/042724
Publication Date:
June 17, 2021
Filing Date:
November 17, 2020
Export Citation:
Assignee:
TOYO TIRE CORP (JP)
International Classes:
B60C15/06; B60C17/00
Foreign References:
| JP2013154819A | 2013-08-15 | |||
| JP2017121888A | 2017-07-13 | |||
| JP2019064485A | 2019-04-25 | |||
| JP2015016765A | 2015-01-29 | |||
| JP2012192853A | 2012-10-11 |
Other References:
See also references of EP 4074524A4
Attorney, Agent or Firm:
SHIBA Tetsuo et al. (JP)
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