Patent · US Expired

Process for obtaining bent-tempered motor vehicle glazings

US5022906A · kind A · utility

9Cited by

1References

6Claims

0Family size

Assignee

Saint-Gobain Vitrage International · FR

Inventors

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

Key dates

Filing date	Dec 13, 1989
Grant date	Jun 11, 1991
Priority date	—
Expiry date	Dec 13, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B40/005
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A process and device for obtaining bent-tempered motor vehicle glazings exhibiting a greatly bent marginal zone comprises a glass sheet heated in a furnace and shaped by pressing the glass sheet between a solid upper form and a bending frame, of which at least one side part is bent during pressing. The side part is covered with an elastically deformable felt material and is removed from the glass sheet during tempering, while the main part of the glass sheet remains supported by the bending frame which also serves as a tempering frame.

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