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. 14, 1991
Filed:
May. 24, 1989
Applicant:
Inventors:
Shunzo Aoyama, Wakoh, JP;
Kunio Yoshida, Fujimi, JP;
Hachiro Doi, Saitama, JP;
Katsumi Sakamoto, Ohmiya, JP;
Assignee:
Ahresty Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164 72 ; 164113 ; 164267 ; 164312 ;
Abstract
Molten metal is prevented from cooling too quickly when supplied to an injection sleeve of a casting device by applying a heat insulating powder onto an inner surface of the injection sleeve between each supply of molten metal. The heat insulating powder can be applied to the inner surface of the injection sleeve by way of an electrostatic field created between an electrode which has been inserted into the injection sleeve and the injection sleeve itself.