Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2021/085005
Kind Code:
A1
Abstract:
Provided is a pneumatic tire that has stud pins implanted on a tread surface of a tread part and that enables improvement of performance on ice and improvement of ride quality performance on a dry road surface. This pneumatic tire has stud pins P implanted on a tread surface of a tread part 1. When a region demarcated between a pair of tire meridians arranged such that a gap therebetween on a tire center line CL is 1/4 of a tire ground contact length is defined as a belt-like region A and a plurality of the belt-like regions A are arranged on the whole tire circumference at an angular interval of 1 degree along a tire circumferential direction, a number n of the stud pins P included in each belt-like region A of all the plurality of belt-like regions A is not more than 4.0% of a total number N of the stud pins P in the whole tire circumference and the number n of the stud pins included in each belt-like region A of not less than 2/3 of the plurality of belt-like regions A is not less than 2.0% of the total number N.
Inventors:
SHIBAI TAKASHI (JP)
Application Number:
PCT/JP2020/036756
Publication Date:
May 06, 2021
Filing Date:
September 29, 2020
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C11/03; B60C11/16
Domestic Patent References:
| WO2019138792A1 | 2019-07-18 |
Foreign References:
| JPS49132706A | 1974-12-19 | |||
| JPS5945203A | 1984-03-14 | |||
| JPS628105U | 1987-01-19 | |||
| JP2007050718A | 2007-03-01 |
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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