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:
Sep. 06, 1988

Filed:

Jan. 16, 1987
Applicant:
Inventors:

Takemasa Yamada, Niiza, JP;

Hajime Kashiwase, Tokyo, JP;

Satoshi Maeda, Mitaka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F07L / ;
U.S. Cl.
CPC ...
123 9016 ; 123 9049 ; 123 9017 ;
Abstract

A valve mechanism for an intake valve has a cam block including a first cam comprising a base circle and a second cam having a lobe and a base circle the diameter of which is equal to that of the base circle of the first cam. A first rocker arm engaging with the first cam and a second rocker arm engaging with the second cam are provided. The first and second rocker arms are rotatably engaged with each other so as to be independently rocked by corresponding cams, and have holes in which a lock pin engages to connect the first and second rocker arms with each other so as to be rocked together by the second cam. The system is arranged to engage and disengage the pin with and from both the holes of the first and second rocker arms at a time when both the rocker arms engage with the base circles at the same time.


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