Title:
STEEL CORD FOR REINFORCEMENT OF RUBBER ARTICLE AND PNEUMATIC TIRE USING SAME
Document Type and Number:
WIPO Patent Application WO/2010/073641
Kind Code:
A1
Abstract:
Disclosed is a steel cord that is used to reinforce a rubber article and that has no sheath wire bias and has excellent rubber penetration; further disclosed is a pneumatic tire which uses said cord and has excellent durability. This steel cord for rubber article reinforcement is comprised of a core (10), which is comprised of two untwisted core wires (1), and six sheath wires (2) which are twisted around the perimeter of the core (10). The average clearance between adjacent sheath wires (2) is 24 μm or greater, and the sheath wires (6) which are arranged around the core (10) occupy 80% or more of the region wherein the sheath wires (6) are located. In addition, the pneumatic tire utilizes the aforementioned steel cord as the carcass and/or the belt layer.
Inventors:
MATSUO, Hiroyuki (3-1-1 Ogawahigashi-cho, Kodaira-sh, Tokyo 31, 〒1870031, JP)
Application Number:
JP2009/007150
Publication Date:
July 01, 2010
Filing Date:
December 22, 2009
Export Citation:
Assignee:
BRIDGESTONE CORPORATION (10-1, Kyobashi 1-chome Chuo-k, Tokyo 40, 〒1048340, JP)
株式会社ブリヂストン (〒40 東京都中央区京橋１丁目１０番１号 Tokyo, 〒1048340, JP)
株式会社ブリヂストン (〒40 東京都中央区京橋１丁目１０番１号 Tokyo, 〒1048340, JP)
International Classes:
D07B1/06; B60C9/00
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)