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:
Dec. 25, 1990
Filed:
Sep. 18, 1989
Applicant:
Inventors:
Robert G Frank, Sarver, PA (US);
Thomas J Reese, Sarver, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65107 ; 65103 ; 65287 ; 65288 ; 65291 ;
Abstract
A method and apparatus for controlling the shape of heat softened glass sheets. A pan member is positioned inboard of the shaping rails of a bending iron. The upper surface of the pan member has a curvature corresponding to the final desired shape of a selected portion of the glass sheet. As the glass sheet is heated and sags to conform with the contoured shaping rail, it also sags into contact with the pan member and conforms to its shape.