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. 09, 1990
Filed:
Jul. 06, 1989
Applicant:
Inventors:
John A Redemske, Mont Vernon, NH (US);
Merton C Flemings, Cambridge, MA (US);
Assignee:
Hitchiner Manufacturing Co., Inc., Milford, NH (US);
Primary Examiner:
Int. Cl.
CPC ...
B22D / ; B22D / ;
U.S. Cl.
CPC ...
164 63 ; 164255 ; 1641471 ; 164337 ; 222504 ;
Abstract
The casting apparatus and method include a magnetically responsive valve disposed in the molten metal inlet passage of the mold for movement between an open position during mold filling and a closed position after mold filling and during removal of the mold from the underlying molten metal pool to prevent run-out of molten metal from the metal-filled mold cavity. The valve is moved to the closed position by a magnetic force exerted thereon by permanent magnets or an electromagnet disposed around the inlet passage below the valve.