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:
Aug. 10, 1982
Filed:
Aug. 01, 1980
Applicant:
Inventor:
Charles K Edge, Sarver, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65 995 ; 651824 ;
Abstract
The marginal edge portions of an accelerating ribbon of float glass are engaged by a plurality of opposed pairs of attenuating devices, each pair exerting substantially equal forces. The pairs of attenuating devices are positioned longitudinally adjacent one another such that the ratio of the ribbon width intermediate adjacent pairs to the average of the ribbon widths at each pair is greater than 0.95. The attenuating devices may be edge rolls each rotating with a peripheral velocity a predetermined amount greater than the linear velocity of the ribbon immediately upstream.