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:
Nov. 21, 1989
Filed:
Mar. 02, 1989
Applicant:
Inventors:
Tooru Matsuura, Aichi, JP;
Yoshinori Narita, Aichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., Nagoya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
123 9039 ; 123 9044 ; 123 9051 ;
Abstract
A ceramic rocker arm is hollow and formed with two openings for providing communication between an inner hollow place and the outside of the rocker arm. The inner hollow place is communicated with a source of lubricant. The openings are located adjacent surface portions of the rocker arm contacting a cam and a valve so that lubricant is supplied through the inner hollow place and the openings to the joints between the rocker arm and the respective cam and valve. A filler of a synthetic resinous material is filled in the hollow ceramic rocker arm so as to prevent dispersion of small pieces upon breakage of the rocker arm.