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:
Apr. 21, 1987
Filed:
Feb. 28, 1986
Applicant:
Inventor:
Nobuyoshi Sasaki, Yokohama, JP;
Assignee:
M. C. L. Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164256 ; 164 61 ; 164 661 ;
Abstract
A casting apparatus having a casting chamber which may be sealingly closed is provided. The casting chamber is evacuated and then an inert gas or a reducing gas is introduced prior to the casting operation. A ladle for containing a one-shot molten metal is disposed on the casting chamber to be evacuated simultaneously with the evacuation of the casting chamber and then surrounded by an inert or reducing gas atmosphere during the casting operation.