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Patent Searching and Data


Title:
PNEUMATIC RADIAL TIRE FOR USE ON PASSENGER VEHICLE
Document Type and Number:
WIPO Patent Application WO/2015/182153
Kind Code:
A1
Abstract:
The purpose of the present invention is to improve wet performance and rolling resistance performance in a radial tire of low width and high diameter. When the tire is assembled on a rim and the internal pressure is 250 kPa or greater, the ratio (SW/OD) between the tire cross-sectional width (SW) and the outside diameter (OD) (mm) is 0.26 or less when the tire cross-sectional width (SW) is less than 165 (mm), the tire cross-sectional width (SW) and the outside diameter (OD) (mm) satisfy the relational expression 2.135 × SW + 282.3 ≤ OD when the tire cross-sectional width (SW) is 165 (mm) or greater, the tread rubber has a dynamic storage modulus (E') at 30ºC of 6.0 to 12.0 MPa and a loss tangent (tanδ) at 60ºC of 0.05 to 0.15, and when the tread surface is equally divided into four areas in the tire width direction, the two inward areas in the tire width direction being center parts and the two outward areas in the tire width direction being shoulder parts, shoulder circumferential sipes that extend in the tire circumferential direction are located in the shoulder parts.

Inventors:
HATANAKA, Shintaro (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
KUWAYAMA, Isao (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
Application Number:
JP2015/002711
Publication Date:
December 03, 2015
Filing Date:
May 28, 2015
Export Citation:
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Assignee:
BRIDGESTONE CORPORATION (1-1 Kyobashi 3-chome, Chuo-ku Tokyo, 40, 〒1048340, JP)
International Classes:
B60C11/12; B60C3/04; B60C11/00; B60C11/01; B60C11/03
Domestic Patent References:
WO2013065319A12013-05-10
Foreign References:
JPH09227720A1997-09-02
JP2009202772A2009-09-10
JP2006224770A2006-08-31
Other References:
See also references of EP 3130482A4
Attorney, Agent or Firm:
SUGIMURA, Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigaseki, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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