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:
Sep. 26, 1978
Filed:
Oct. 07, 1977
Applicant:
Inventors:
Charles K Edge, Sarver, PA (US);
Thomas J Nier, Corpus Christi, TX (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
6518 / ; 65 9 / ;
Abstract
A glass forming chamber wherein glass is formed while floating on the surface of a pool of molten metal is provided with submerged dam barriers in the pool of molten metal which dam barriers are contoured to inhibit the flow of molten metal in a central portion of the pool beneath an advancing layer of glass relative to the flow of molten metal in marginal portions of the pool including marginal portions between the edges of a floating layer of glass and side walls of the forming chamber.