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. 17, 1977
Filed:
Mar. 01, 1976
Yositaka Uebayasi, Hiroshima, JA;
Hiroshi Kumon, Hiroshima, JA;
Michinobu Yamada, Hiroshima, JA;
Yoshikazu Oe, Hiroshima, JA;
Toyo Kogyo Co., Ltd., , JA;
Abstract
A method of making a metal casting composed of a steel plate and aluminum material interlocked with the steel plate. A plurality of teeth are formed on at least one of the opposed surfaces of the steel plate by raising up a skin of the plate from the same, the teeth providing primary interstices, each of which extends from the steel plate and has at least one face with a number of flaws formed during the formation of the teeth and providing substantially irregular interstices. The casting is then formed by pouring aluminum material in the molten state onto the steel plate surface so that the molten aluminum material penetrates into the primary and irregular interstices, thereby to provide a firm interlocking between the steel plate and the aluminum material upon solidification thereof.