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:
Feb. 07, 2012
Filed:
Nov. 05, 2008
IN Woong Lyo, Suwon-Si, KR;
Sung Moom Choi, Suwon-Si, KR;
Woong Kim, Hwaseong-Si, KR;
Jeong Uk an, Dongjak-gu, KR;
Hyung Ick Kim, Gunpo-Si, KR;
Seung Gyun Ahn, Gangseo-gu, KR;
Hong Kil Baek, Gangnam-gu, KR;
Jin Won Jung, Gwacheon-Si, KR;
In Woong Lyo, Suwon-Si, KR;
Sung Moom Choi, Suwon-Si, KR;
Woong Kim, Hwaseong-Si, KR;
Jeong Uk An, Dongjak-gu, KR;
Hyung Ick Kim, Gunpo-Si, KR;
Seung Gyun Ahn, Gangseo-gu, KR;
Hong Kil Baek, Gangnam-gu, KR;
Jin Won Jung, Gwacheon-Si, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
The present invention provides a valve lifter, including a buffer layer, a Me diamond-like carbon layer having a thickness of 0.3˜0.6 μm, and a diamond-like carbon layer having a thickness of 1˜1.5 μm and a SP3 bonding fraction of 60˜70%, which are sequentially formed on a base body which is subjected to carbonitriding treatment. The valve lifter can exhibit superior low-friction characteristics and wear resistance.