Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2021/111662
Kind Code:
A1
Abstract:
This pneumatic tire comprises, in a tread surface, a plurality of circumferential main grooves that extend in the tire circumferential direction, and a plurality of lands that are demarcated between circumferential main grooves, of the plurality of circumferential main grooves, that are adjacent in the tire width direction or by the circumferential main grooves and a tread edge. The lands each include a plurality of width-direction grooves that extend in the tire width direction and are demarcated into a plurality of blocks by the width-direction grooves. The blocks each include at least one width-direction sipe that extends in the tire width direction; hard rubber with an elastic modulus greater than that of tread rubber is disposed in a region in the tire radial direction of a wall surface that demarcates the width-direction sipe, including at least an opening section open to the tread surface; and microfabrication is applied to a region of the tread surface that surrounds at least part of the opening section of the width-direction sipe open to the tread surface.
Inventors:
TOMIDA TATSUYA (JP)
Application Number:
PCT/JP2020/024393
Publication Date:
June 10, 2021
Filing Date:
June 22, 2020
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C11/00; B60C11/12
Foreign References:
| JP2018203183A | 2018-12-27 | |||
| JP2019064481A | 2019-04-25 | |||
| JP2016540689A | 2016-12-28 | |||
| JP2013091480A | 2013-05-16 | |||
| JPH07257111A | 1995-10-09 |
Other References:
JAPAN AUTOMOBILE TYRE MANUFACTURERS ASSOCIATION (JATMA: "Japan, the STANDARDS MANUAL of the ETRTO"
See also references of EP 4043244A4
See also references of EP 4043244A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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