公开(公告)号：US20180148897A1

公开(公告)日：2018-05-31

申请号：US15580354

申请日：2016-05-19

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： YONG HYEON CHO ,  JIN YU CHOI ,  YUN SUK KANG ,  JOO UK KIM

IPC: E01B5/08 ,  B60B19/00 ,  B61H11/00 ,  B61C15/08

CPC classification number: E01B5/08 ,  B60B17/00 ,  B60B19/00 ,  B60B21/08 ,  B61C15/08 ,  B61H11/00 ,  C21D1/09 ,  C21D1/10 ,  C21D9/04 ,  C21D9/34 ,  C21D10/005 ,  E01B5/02 ,  Y02P10/253

Abstract: A friction apparatus is provided. The friction apparatus includes: a first member having a first surface; and a second member having a second surface that contacts the first surface, and moving while in contact with the first member, wherein at least one of the first surface and the second surface is hardened.