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:
Mar. 10, 1987
Filed:
Dec. 21, 1984
Hans Korkemeier, Weissach, DE;
Dr. Ing. h.c.F. Porsche AG, , DE;
Abstract
A ceramic body for use as a gas conduction channel or duct and preferably used to define an exhaust channel in a cylinder head of an internal combustion engine, where the cylinder head is cast around the ceramic body. The ceramic body is provided with a thickening or external layer over at least a part of its outer surface. This external layer adds stability and strength to the ceramic body and allows it to withstand the pressures occurring during the casting of the cylinder head. The thickening or external layer is formed from a pressure resistant material and may be applied to a depression in the ceramic body or into the space between two parallel ceramic bodies to provide the required strength and stability.