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:
Jan. 18, 2000
Filed:
Mar. 22, 1993
Asahi Glass Company Ltd., Tokyo, JP;
Abstract
A process for bend-shaping a glass plate by heating the glass plate to a softening temperature of the glass plate, while the glass plate is transferred along a transferring surface in a shaping furnace. The glass plate is transferred along a complex bending transferring surface having a complex curved face which is upwardly projected with predetermined radius of curvatures along both the axis of the transferring direction and the axis perpendicular to the transferring direction. The transferring surface having an upward gradient portion at at least an area near the exit of the shaping furnace, to thereby bend the glass plate into a shape which substantially corresponds to that of the complex bending transferring surface, and then, the glass plate being cooled and strengthened along a cooling transferring surface which has a complex curved face so as to be substantially continuous to that of the complex bending transferring surface and which has at least a downward gradient portion in at least a part of the cooling transferring surface.