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. 23, 1990
Filed:
Dec. 07, 1988
Applicant:
Inventors:
Satoshi Takeyama, Yokohama, JP;
Yasuo Matsumoto, Yokohama, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
123315 ; 123 9016 ;
Abstract
A valve operating mechanism for an internal combustion engine having a plurality of exhaust valves per cylinder comprises a device for driving the exhaust valves in a same cylinder at such a valve timing that makes opening of the exhaust valves with a phase difference, i.e., at different timings relative to a crank angle. In one aspect of this invention, the exhaust valves open at the different times and close at the same time.