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:
Dec. 02, 2008
Filed:
Sep. 15, 2006
Masaaki Yoshikawa, Naka-Ku, Hamamatsu-Shi, JP;
Masaaki Yoshikawa, Naka-Ku, Hamamatsu-Shi, JP;
Other;
Abstract
A valve train apparatus of 4 stroke-cycle internal combustion engine includes an intake cam shaft, an exhaust cam shaft, an eccentric cam shaft, an intermediate lever, a rocker arm, and an intake valve. A lift of the intake valve is continuously varied by controlling rotations of the intake cam shaft and the eccentric cam shaft via the intermediate lever contacting the intake cam shaft and the eccentric cam shaft, and via the rocker arm contacting the intermediate lever. At least two of a parting surface of a bearing of the eccentric cam shaft, a parting surface of a bearing of the intake cam shaft, and a parting surface of a bearing of the exhaust cam shaft are arranged on a coplanar surface.