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:
May. 22, 2012
Filed:
May. 29, 2009
Tsuyoshi Arinaga, Yamato, JP;
Toru Fukami, Machida, JP;
Shinichi Takemura, Yokohama, JP;
Shunichi Aoyama, Yokosuka, JP;
Tsuyoshi Arinaga, Yamato, JP;
Toru Fukami, Machida, JP;
Shinichi Takemura, Yokohama, JP;
Shunichi Aoyama, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
A variable valve system for an internal combustion engine includes a drive shaft, a drive cam provided on the drive shaft, a link arm fitted on the outer periphery of the drive cam such as to rotate relative to the drive cam, a crank-shaped control shaft including a main shaft and an eccentric cam, an oscillating arm rotatably attached to the eccentric cam and oscillated by the link arm, and an oscillating cam connected to the oscillating arm via a link rod so as to actuate a valve. Lubricant is communicated from a main lubricant flow path in the drive shaft through three lubricant paths to sliding contact areas between the drive cam and the link arm, between the pin of the oscillating arm and the link arm, and between the eccentric cam and the oscillating arm.