The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
May. 19, 2016
Applicant:
Korea Railroad Research Institute, Uiwang-si, KR;
Inventors:
Yong Hyeon Cho, Seoul, KR;
Jin Yu Choi, Seongnam-si, KR;
Yun Suk Kang, Yongin-si, KR;
Joo Uk Kim, Bucheon-si, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01B 5/08 (2006.01); B61C 15/08 (2006.01); B61H 11/00 (2006.01); E01B 5/02 (2006.01); B60B 17/00 (2006.01); B60B 21/08 (2006.01); C21D 10/00 (2006.01); C21D 9/34 (2006.01); C21D 9/04 (2006.01); B60B 19/00 (2006.01); C21D 1/09 (2006.01); C21D 1/10 (2006.01);
U.S. Cl.
CPC ...
E01B 5/08 (2013.01); B60B 17/00 (2013.01); B60B 19/00 (2013.01); B60B 21/08 (2013.01); B61C 15/08 (2013.01); B61H 11/00 (2013.01); C21D 9/04 (2013.01); C21D 9/34 (2013.01); C21D 10/005 (2013.01); E01B 5/02 (2013.01); C21D 1/09 (2013.01); C21D 1/10 (2013.01); Y02P 10/253 (2015.11);
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.