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:
Apr. 10, 2012
Filed:
Sep. 18, 2007
Toru Fukami, Yokosuka, JP;
Shinichi Takemura, Yokohama, JP;
Tsuyoshi Arinaga, Yokosuka, JP;
Takanobu Sugiyama, Yokohama, JP;
Shunichi Aoyama, Yokosuka, JP;
Toru Fukami, Yokosuka, JP;
Shinichi Takemura, Yokohama, JP;
Tsuyoshi Arinaga, Yokosuka, JP;
Takanobu Sugiyama, Yokohama, JP;
Shunichi Aoyama, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A valve operating device that opens and closes a valve of an internal combustion engine by driving a valve stem in an axial direction includes a rocker cam that rocks in accordance with a rotation of a drive shaft and has a driving cam portion and a lift restricting cam portion; a cam follower that lifts the valve by contacting the driving cam portion slidingly; and a restricting member that prevents the cam follower from separating from the driving cam portion in cooperation with the lift restricting cam portion. A gap is formed between the restricting member and the rocker cam in a state where the cam follower is in contact with the driving cam portion and disappears such that the restricting member and the rocker cam come into contact with each other only when the cam follower separates from the driving cam portion.