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:
Dec. 29, 1987
Filed:
Aug. 01, 1984
Applicant:
Inventors:
Yasuo Tsukuda, Tokyo, JP;
Hisao Hara, Kumagaya, JP;
Hideki Harada, Saitama, JP;
Yasuo Iizuka, Saitama, JP;
Assignee:
Hitachi Metals, Ltd., , JP;
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60272 ; 60282 ; 1231 / ; 164 98 ;
Abstract
An improved exhaust port assembly, for an internal combustion engine comprises a port pipe made of heat resistance steel covered by a fibrous ceramic sheet which is covered by an aluminum foil to prevent molten aluminum from penetrating the fibrous ceramic sheet when aluminum casting.