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. 24, 1989
Filed:
Dec. 22, 1988
Applicant:
Inventors:
Shigeaki Akao, Aichi, JP;
Masato Taniguchi, 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 ;
Abstract
A rocker arm comprises a main body section made of ceramics and a protective member section covering the outer surface of the main body section. The protective member section is in the form of a film or layer and made of a ductile material so that upon breakage of the ceramic main body section the protective member is plastically deformed to hold the broken pieces of the ceramic main body together.