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Patent Searching and Data


Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2018/159538
Kind Code:
A1
Abstract:
Provided is a tire with which air column resonance noise can be reduced while maintaining the degree of freedom of the tread design, and uneven abrasion of the treads can be suppressed. The tire comprises, in a tread surface, at least one circumferential direction groove that extends continuously in the tire circumferential direction, and a shoulder land portion defined by the circumferential direction groove and a tread grounding end. The shoulder land portion has a width direction groove that extends in the tire width direction and that establishes communication between the circumferential direction groove and the tread grounding end. The width direction groove has, within the width direction groove, a narrow groove that communicates with the width direction groove and that has a smaller cross-section area than the width direction groove. The cross-section area of the narrow groove and the cross-section area of the width direction groove satisfy the following relational expression: "0.08 ≤ narrow groove cross-section area/width direction groove cross-section area ≤ 0.80".

Inventors:
WATANABE Toshiyuki (1-1 Kyobashi 3-chom, Chuo-ku Tokyo 40, 〒1048340, JP)
Application Number:
JP2018/006979
Publication Date:
September 07, 2018
Filing Date:
February 26, 2018
Export Citation:
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Assignee:
BRIDGESTONE CORPORATION (1-1 Kyobashi 3-chome Chuo-ku Tokyo, 40, 40, 〒1048340, JP)
International Classes:
B60C11/13; B60C11/03
Foreign References:
JP2013129427A2013-07-04
JPH11198610A1999-07-27
JPH0853004A1996-02-27
JP2011168221A2011-09-01
JP2010013091A2010-01-21
JP2007001484A2007-01-11
JP2013139168A2013-07-18
JP2011051529A2011-03-17
JP2014166827A2014-09-11
Other References:
See also references of EP 3590733A4
Attorney, Agent or Firm:
SUGIMURA Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigasek, Chiyoda-ku Tokyo 13, 〒1000013, JP)
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