Patent · US Expired

Process and apparatus for manufacturing a curved sheet of glass

US4915722A · kind A · utility

5Cited by

1References

10Claims

0Family size

Assignee

Saint-Gobain Vitrage · FR

Inventors

Hubert Havenith · Würselen, DE
Herbert Radermacher · Raeren, BE
Hans-Werner Nowoczyn · Aachen, DE
Benoit D'Iribarne · Aachen, DE
Hans-Werner Kuster · Aachen, DE
Luc Vanaschen · Eupen, BE

Key dates

Filing date	Feb 3, 1989
Grant date	Apr 10, 1990
Priority date	—
Expiry date	Feb 3, 2009

Classification

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

Abstract

A process for bending a glass sheet, in particular one for motor vehicles, with curved areas having small radii of curvature. The bending device used is a bending press having a male type mold and a female type mold. The female type mold consists of at least two mold parts hinged together. After part of the glass sheet heated to bending temperature has been received by the bending press, at least one swivelling mold part of the female type mold is swivelled around the swivel axis, against the male type mold. An adjustable electric motor serves as the drive motor to move the swivelling mold parts. The angular velocity of the swivel action of the swivelling mold parts during the bending process is adjusted as a function of the temperature of the glass sheet and the desired degree of deformation.

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