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.

Date of Patent:
Jul. 16, 2002

Filed:

Dec. 26, 2000
Applicant:
Inventors:

Chikara Tanaka, Wako, JP;

Hiromu Nakamura, Wako, JP;

Noriyuki Yamada, Wako, JP;

Junichi Iwamoto, Haga-gun, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/18 ;
U.S. Cl.
CPC ...
F01L 1/18 ;
Abstract

In a valve operating system in an internal combustion engine, a rocker arm has a plurality of valve abutments provided thereon and capable of being individually put into abutment against upper ends of a plurality of engine valves cam abutments, and also has cam abutments provided thereon to come into contact with a valve operating cam. Wall-removed portions are formed in the rocker arm at locations corresponding to the cam abutments and open at opposite sides of the rocker arm. Thus, it is possible to provide a reduction in weight of the rocker arm.


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