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. 24, 1979
Filed:
Mar. 06, 1978
Vaughn R Imler, Valencia, PA (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
In tempering glass sheets vertically hung from tongs, the uniformity with which tempering medium is applied onto the glass sheets during quenching is improved by providing the quenching apparatus with a plurality of discs carried on wires on one side of the path taken by glass sheets through the quenching apparatus. The flow of tempering medium is controlled so as to force the glass sheets against the discs, thereby avoiding uncontrolled buffeting of the glass sheets during quenching. The discs are designed to minimize interference with the flow of tempering medium and preferably include openings through which the tempering medium may flow, such as serrations along the edges.