Patent · US Expired

Manufacture of gas filled envelopes

US4204721A · kind A · utility

16Cited by

3References

11Claims

0Family size

Assignee

BFG Glassgroup · FR

Inventors

Francois Hubert · Walcourt, BE
Michel Laurent · Nivelles, BE
Lucien Leger · Montigny-le-Tilleul, BE

Key dates

Filing date	Oct 17, 1978
Grant date	May 27, 1980
Priority date	—
Expiry date	Oct 17, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/44
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method of manufacturing a hermetically sealed envelope comprising assembling envelope-forming components of which at least one is a vitreous wall forming component wherein the or each vitreous component is metallized along a zone where it is to be bonded by solder to form a sealing joint. Such sealing is effected while the assembly 13 of envelope-forming components is within a hermetically sealable chamber 1 e.g. using heating devices 11, 12. The chamber may be evacuated via exhaust port 7 and valve 9 and optionally filled with a gas other than air via inlet port 4 and valve 6.

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