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Patent Searching and Data


Title:
PNEUMATIC TIRE FOR MOTORCYCLE
Document Type and Number:
WIPO Patent Application WO/2019/012965
Kind Code:
A1
Abstract:
Provided is a pneumatic tire for motorcycles that has improved wet grip properties during turning while ensuring steering stability during turning. Disclosed is a pneumatic tire for a motorcycle, wherein: a tread part is composed of a central-part rubber and a side rubber having a lower modulus than the central-part rubber; both side portions in the tire width direction have a structure in which the central-part rubber and the side rubber are layered in order; the side rubber extends more toward the inside, in the tire width direction, than a point separated from the tire equator toward outside in the tire width direction by a distance of one-fourth of the tread width TW; a tire tread surface part has a tread pattern including a plurality of oblique grooves 21 to 25; and when the tread width is divided into eight equal parts, in region C, which is one of the eight equally divided regions and which is within a range from one-fourth to three-eighth of the tread width from the tire equator toward outside in the tire width direction, the number of oblique grooves included in a single pitch of the tread pattern is the greatest, and the depth of the oblique groove(s) is greater than the thickness of the side rubber in at least a portion within the region C.

Inventors:
TAKAHASHI JUNICHI (JP)
UCHIDA MITSUNORI (JP)
Application Number:
PCT/JP2018/023881
Publication Date:
January 17, 2019
Filing Date:
June 22, 2018
Export Citation:
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Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C11/03; B60C11/00
Domestic Patent References:
WO2012111776A12012-08-23
WO2009013961A12009-01-29
Foreign References:
JP2008044449A2008-02-28
JP2014139031A2014-07-31
JP2005271760A2005-10-06
JP2014162367A2014-09-08
JP2013116709A2013-06-13
JP2008044449A2008-02-28
Other References:
See also references of EP 3653404A4
Attorney, Agent or Firm:
HONDA Ichiro (JP)
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