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, 1981
Filed:
Mar. 02, 1979
Shinichi Nagumo, Yokohama, JP;
Nissan Motor Company, Limited, Yokohama, JP;
Abstract
A heat-insulating layer secured to a cast metal member of an internal combustion engine so as to be exposed to combustion gas in the engine. A porous or intersticed metal body, preferably having a soft structure, is used as a fundamental material of this layer. A surface portion of the porous metal body is impregnated with a ceramic material, and then the metal body is cast-inserted into the metal member such that the molten metal infiltrates into another surface portion of the porous metal body and that the ceramic-impregnated portion is exposed to combustion gas in the engine. This heat-insulating layer is excellent in toughness, durability and bonding strength and can be embodied in a combustion chamber wall, exhaust port wall or a top portion of a piston.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile