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:
Jul. 18, 1989
Filed:
May. 26, 1988
Applicant:
Inventors:
Shoko Kubota, Zama, JP;
Sadayoshi Yamada, Zama, JP;
Assignee:
Toshiba Machine Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
222595 ; 164155 ; 164156 ; 1641471 ; 222594 ;
Abstract
A pressurized holding furnace having an open feeding chamber is provided with a pressure chamber having a pressure device for pressurizing the pressure chamber and a discharge device for releasing the pressure. The pressure chamber is provided at a lower position than the lowest level of the molten metal in the pressure chamber with an inlet port of a feeding pipe and at a higher position than the highest level of the molten metal in the pressure chamber with an electromagnetic pump.