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:
Jul. 19, 1977
Filed:
May. 18, 1976
Applicant:
Inventors:
John S Sieger, Glenshaw, PA (US);
Joseph A Gulotta, New Kensington, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
6518 / ; 65 32 ; 6537 / ;
Abstract
A tin alloying metal seal is employed at refractory joints about the bottom of a float glass forming chamber for containing molten tin upon which glass can be formed in order to prevent leakage of tin through interstices in the refractory, or between refractory pieces, by forming an alloy with molten tin reaching the metal seal which has a substantially higher melting point than tin.