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:
Oct. 04, 1988
Filed:
Aug. 03, 1987
Applicant:
Inventors:
Yukio Yamamoto, Hiroshima, JP;
Shunzo Takasuga, Hiroshima, JP;
Fujio Ueoka, Yamaguchi, JP;
Norio Kodama, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C / ;
U.S. Cl.
CPC ...
164 14 ; 164 33 ; 164132 ; 164137 ; 164138 ; 164369 ;
Abstract
A casting core adapted to be placed inside a molding cavity for defining a cored-out hollow inside a metal casting, which core comprises a first coated layer formed on an exterior surface of the casting core by coating a slurry containing powdery refractory material, and a second coated layer formed over the first coated layer by applying a solution containing graphite particles. A method of making a metal casting with the use of the casting core is also disclosed.