Patent · US Expired

Method and device for bending glass panes in pairs

US7302813B2 · kind B2 · utility

13Cited by

20References

16Claims

0Family size

Assignee

SAINT-GOBAIN GLASS FRANCE · FR

Inventors

Michael Balduin · Alsdorf, DE
Michael Labrot · Aachen, DE
Hubert Havenith · Würselen, DE

Key dates

Filing date	Feb 6, 2002
Grant date	Dec 4, 2007
Priority date	—
Expiry date	Nov 13, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B35/202
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

In a method for bending, in pairs, panes placed one upon the other, heated to their softening temperature, the pair or panes is deposited on a bending frame and prebent under action of the force of gravity. The prebent pair of panes is transferred onto a suction bending mold with a concave forming face, the underside of the lowermost pane being supported at least on the peripheral edge of the forming face. By applying a depression for a predetermined length of time, the air is sucked out of the intermediate space between the underside of the lowermost pane and the suction bending mold, and the pair of panes is pressed by atmospheric pressure onto the concave forming face of the suction bending mold. After the end of the application of the depression, the finished molded pair of panes is transferred from the suction bending mold onto a transport device and is cooled.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.