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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/004393
Kind Code:
Provided is a rubber component reinforcing-steel cord having improved corrosion resistance without increasing the weight thereof. The rubber component reinforcing steel cord 1 comprises a plurality of sheath strands 3 twisted around at least one core strand 2 having a plurality of steel filaments twisted therein, said sheath strands 3 comprising a plurality of steel filaments twisted therein. The core strand 2 and the sheath strands 3 comprise at least one core filament 2c, 3c, and a plurality of sheath filaments 2s, 3s wound therein. The relationship represented by formula (1), dcc > dcs ≥ dsc > dss, is satisfied, wherein the wire diameter of the core filaments 2c in the core strand 2 is dcc, the wire diameter of the sheath filament 2s is dcs, the wire diameter of the core filament 3c of the sheath strands 3 is dsc, and the wire diameter of the sheath filament 3s is dss.

OBANA Naohiko (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
Application Number:
Publication Date:
January 03, 2019
Filing Date:
June 28, 2018
Export Citation:
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BRIDGESTONE CORPORATION (1-1 Kyobashi 3-chome, Chuo-ku Tokyo, 40, 〒1048340, JP)
International Classes:
D07B1/06; C25D7/06
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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