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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/025754
Kind Code:
Provided is a pneumatic tire of which the cutting resistance is enhanced and of which the resistance to passage of foreign matter is also enhanced without deterioration in crack development resistance of the outermost belt layer. A pneumatic tire 100 comprises a belt which is disposed outside, in a radial direction of the tire, of a carcass 102 and which includes at least three belt layers 103, wherein at least a reinforcing material of an outermost belt layer 103c, among the at least three belt layers 103, is a steel cord having a layer twisted structure which includes a core formed of two core filaments and includes a sheath formed of eight twisted sheath filaments surrounding the core, and the amount of the steel cords in the outermost belt layer 103c expressed by expression (1): the diameter of the steel cord (mm) × the number of the steel cords driven (per 50 mm) (1) is 37-49.

MORI Yuriko (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
Application Number:
Publication Date:
February 08, 2018
Filing Date:
July 27, 2017
Export Citation:
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BRIDGESTONE CORPORATION (1-1 Kyobashi 3-chome, Chuo-ku Tokyo, 40, 〒1048340, JP)
International Classes:
B60C9/00; D07B1/06
Attorney, Agent or Firm:
HONDA Ichiro (HONDA INTERNATIONAL PATENT & TRADEMARK OFFICE, 6th Floor Yusei Fukushi Kotohira Bldg., 14-1, Toranomon 1-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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