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. 30, 1996
Filed:
Nov. 22, 1993
Charles W Connors, Jr, Chicago, IL (US);
James S Irwin, Geneva, IL (US);
Magneco/Metrel, Inc., Addison, IL (US);
Abstract
A method of manufacturing an open top, walled member for containing a molten metal, including the steps of forming an inner wall of a mold with a metal sheet and an inner lining covering the sheet, wherein the inner wall defines an inside surface of the walled member and transferring a casting compound between an outer wall of the mold and the inner lining of the inner wall to form the walled member. The metal sheet and inner lining are then removed to allow one to apply heat to dry the casting compound. In the case where the metal sheet includes a plurality of openings, one may also retain the inner wall during the heating step. The heat to dry the casting compound is applied to the inner lining to a sufficient temperature to melt the inner lining and uncover said openings of the metal sheet. The metal sheet is removed when the casting compound is dried. Another aspect of the present invention is a mold for forming an open top, walled member for containing a molten metal having an inner wall including an inner lining and a metal sheet and an outer wall, wherein the inner wall and the outer wall are spaced relative to each other to define a space so that the open top, walled member is formed therebetween.