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:
Dec. 18, 1990
Filed:
Jan. 10, 1990
Applicant:
Inventor:
Lloyd E Hackman, Worthington, OH (US);
Assignee:
Ribbon Technology Corporation, Gahanna, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ; B22D / ;
U.S. Cl.
CPC ...
164453 ; 164450 ; 164423 ; 222 67 ; 222596 ;
Abstract
The invention is directed to an apparatus and method for controlling the overflow of molten material from a receptacle for the purpose of achieving more uniform casting of the molten material. The apparatus and method utilize a force detector able to detect the change in the buoyant force exerted on a submersible body lowered into a molten material. A differentiating means, a control means, and a drive means are responsive to the force detector, whereby a constant rate of change of buoyant force is translated into a uniform rate of overflow of molten material delivered to a heat extracting substrate for solidification.