公开(公告)号：US09610806B2

公开(公告)日：2017-04-04

申请号：US14248829

申请日：2014-04-09

Applicant: HANKOOK TIRE CO., LTD.

Inventor： Kwan Woo Jung ,  Il Yong Park ,  Kum Kang Hwang ,  Ill Soon Jang ,  Ji Wan Lee ,  Mi Jung Lee

IPC: B60C9/00 ,  D07B1/06 ,  D02G3/48 ,  D02G3/12 ,  B60C9/04 ,  B60C15/06 ,  B60C9/20

CPC classification number: B60C9/0007 ,  B60C9/0057 ,  B60C2009/0014 ,  B60C2009/0021 ,  B60C2009/0071 ,  B60C2009/0092 ,  B60C2009/0416 ,  B60C2009/2074 ,  B60C2015/0685 ,  D02G3/12 ,  D02G3/48 ,  D07B1/062 ,  D07B1/0633 ,  D07B1/0646 ,  D07B1/0653 ,  D07B2201/2003 ,  D07B2201/2005 ,  D07B2201/2011 ,  D07B2201/2018 ,  D07B2201/2025 ,  D07B2201/206 ,  D07B2201/2061 ,  D07B2201/2065 ,  D07B2205/3057 ,  D07B2205/3067 ,  D07B2205/3071 ,  D07B2205/3085 ,  D07B2205/3089 ,  D07B2205/3092 ,  D07B2801/12 ,  D07B2801/14 ,  D07B2801/18 ,  D07B2801/10

Abstract: Disclosed is a tire-reinforcing steel cord for a radial tire. The tire-reinforcing steel cord has a double layer structure including a first-layer core and a second-layer core provided on the surface of the first-layer core. The first-layer core has an elliptical or rectangular cross section. The tire-reinforcing steel cord can improve processability, fatigue characteristics, and rolling resistance performance of a tire, resulting in improved fuel efficiency. A radial tire using the tire-reinforcing steel cord is also disclosed.