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:
Oct. 13, 2009
Filed:
Feb. 01, 2007
Makoto Nakamura, Kanagawa, JP;
Mikihiro Kajiura, Tokyo, JP;
Yoshihiko Yamada, Kanagawa, JP;
Seinosuke Hara, Kanagawa, JP;
Makoto Nakamura, Kanagawa, JP;
Mikihiro Kajiura, Tokyo, JP;
Yoshihiko Yamada, Kanagawa, JP;
Seinosuke Hara, Kanagawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A valve operating apparatus for an internal combustion engine including a drive cam, first and second swing cams, first and second motion transmission mechanisms and first and second valve actuating members. The first and second swing cams are provided with identical swing motion characteristic with respect to a rotation angle of the drive cam through the first and second motion transmission mechanisms. The first swing cam and the first valve actuating member cooperate with each other to provide a valve lift amount of the engine valve for the first group of cylinders with respect to a swing angle of the first swing cam which is identical to a valve lift amount of the engine valve for the second group of cylinders with respect to a swing angle of the second swing cam.