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:
Feb. 01, 1977
Filed:
Oct. 16, 1975
Yositaka Uebayasi, Hiroshima, JA;
Hiroshi Kumon, Hiroshima, JA;
Michinobu Yamada, Hiroshima, JA;
Yoshikazu Oe, Hiroshima, JA;
Toyo Kogyo Co., Ltd., , JA;
Abstract
A metal casting made of a steel plate and an aluminum material mechanically interlocked with the steel plate. The metal casting has a resistance to wear, impact and/or elevated temperature, or has other required or desired characteristics such as good heat conductivity. In order to increase the bonding strength or shear strength, the steel plate is formed with a plurality of teeth each raised up from the steel plate and having a number of surface irregularities and the molten aluminum material penetrates into the primary interstices defined by the spaces between the teeth and the irregular interstices defined by the surface irregularities on each of the teeth.