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:
Jun. 25, 2013
Filed:
Jul. 30, 2010
Hosung Cho, Hwaseong-si, KR;
Jin Gyu Yang, Hwaseong-si, KR;
Myung Rae Cho, Incheon, KR;
Hong Wook Lee, Yongin, KR;
Duk Jin Park, Hwaseong-si, KR;
Seong Hyuk Kang, Hwaseong, KR;
Taewon Park, Hwaseong-si, KR;
Wootae Kim, Suwon, KR;
Myungsik Choi, Seoul, KR;
Jin Woo Yang, Hwaseong-si, KR;
Eui Chul Choi, Seoul, KR;
Sung Han Kang, Hwaseong-si, KR;
Won Gyu Kim, Seoul, KR;
Dae Sung Kim, Hwaseong, KR;
Hosung Cho, Hwaseong-si, KR;
Jin Gyu Yang, Hwaseong-si, KR;
Myung Rae Cho, Incheon, KR;
Hong Wook Lee, Yongin, KR;
Duk Jin Park, Hwaseong-si, KR;
Seong Hyuk Kang, Hwaseong, KR;
Taewon Park, Hwaseong-si, KR;
Wootae Kim, Suwon, KR;
Myungsik Choi, Seoul, KR;
Jin Woo Yang, Hwaseong-si, KR;
Eui Chul Choi, Seoul, KR;
Sung Han Kang, Hwaseong-si, KR;
Won Gyu Kim, Seoul, KR;
Dae Sung Kim, Hwaseong, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Abstract
An electro-hydraulic variable valve lift apparatus may include a housing, a master portion which is slidably disposed to the housing and contacts a cam, a first oil supply portion which supplies hydraulic pressure, a slave piston which is slidably disposed within the housing and defines an oil chamber with the master portion, a latching portion which is supplied the hydraulic pressure from the first oil supply portion and selectively connects the slave piston and the master portion, a second oil supply portion which selectively supplies hydraulic pressure to the oil chamber so as to control relative distances between the master portion and the slave piston when the slave piston is disengaged with the master portion, and a stepped portion formed to the housing between the master portion and the slave piston to elastically support the master portion.