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:
Aug. 15, 1989
Filed:
Sep. 22, 1988
Applicant:
Inventors:
Ken Okazaki, Higashi-Hiroshima, JP;
Kazuo Satou, Higashi-Hiroshima, JP;
Junichi Yamamoto, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
123 9051 ; 123 906 ;
Abstract
A valve driving mechanism of which a rocker arm is provided at one end portion with a roller brought into a rotative contact with a cam surface of a cam for driving engine valves. The cam consists of 2.0-4.0 wt % of C, 1.5-3.5 wt % of Si, 0.1-1.0 wt % of Mn, 0.005-0.08 wt % of Mg, less than 0.15 wt % of P, less than 0.15 wt % of S, 0.3-1.0 wt % of Cu, 0.03-0.09 wt % of Mo with the balance of Fe, with a matrix of the cam being a granular graphite cast iron having a mixed structure of 30-50 vol % of residual austenite structure and a bainite structure.