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:
Jan. 13, 1976
Filed:
Oct. 15, 1974
Charles K Edge, Sarver, PA (US);
Gerald E Kunkle, New Kensington, PA (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
A layer of molten glass is discharged from a pool of molten glass in a glassmaking furnace and delivered along a substantially horizontal path onto a pool of molten metal in a forming chamber; the glass is then advanced along the surface of the pool of molten metal while being cooled to form a continuous sheet of glass. Prior to discharge and delivery, the molten glass is conditioned to establish an accelerated flow of molten glass in the direction of its delivery. The glass is conditioned by selectively cooling the glass at different depths in the pool of molten glass across the width of the delivery path just prior to delivery to preferentially decelerate the flow of hotter, less viscous glass at one location in the pool of molten glass relative to the flow of cooler, more viscous glass at another location in the pool. In this way the molten glass is caused to uniformly flow into a region for discharge from the pool and delivery for forming.