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. 18, 2013
Filed:
Sep. 13, 2011
Jei Choon Yang, Yongin-si, KR;
Byong Young Choi, Incheon, KR;
Jin Kook Kong, Suwon-si, KR;
Soo Hyung Woo, Yongin-si, KR;
Jin Soon Kim, Hwaseong-si, KR;
Jei Choon Yang, Yongin-si, KR;
Byong Young Choi, Incheon, KR;
Jin Kook Kong, Suwon-si, KR;
Soo Hyung Woo, Yongin-si, KR;
Jin Soon Kim, Hwaseong-si, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
A variable valve timing apparatus according to the present invention may include a camshaft holder connected to a camshaft, a cam sprocket rotating the camshaft, a rotation shaft disposed to the camshaft holder having a moving screw thread formed thereon, a first and second driven bevel gears disposed to distal ends of the rotation shaft, a screw nut engaged with the moving screw thread and moving along length direction of the rotation shaft by rotation of the first driven bevel gear or the second driven bevel gear so as to change relative phase between the camshaft and the cam sprocket and a gear control portion which selectively rotates the first driven bevel gear or the second driven bevel gear.