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:
May. 09, 1989
Filed:
Jul. 14, 1987
Applicant:
Inventors:
Masato Taniguchi, Aichi, JP;
Yoshinori Narita, Aichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164 98 ; 164410 ;
Abstract
A method of forming a complex body of a sintered ceramic material and a metal. A through-hole is provided in the sintered ceramic material before it is cast-embedded in the metal. The through-hole provides for the release of gas to prevent the formation of a cavity between the sintered ceramic material and the metal.