Glass manufacturing – Processes – Fusion bonding of glass to a formed part
Reexamination Certificate
2007-04-17
2007-04-17
Lopez, Carlos (Department: 1731)
Glass manufacturing
Processes
Fusion bonding of glass to a formed part
C065S043000
Reexamination Certificate
active
09959111
ABSTRACT:
A method of forming an air-tight scal between two pieces of glass is described. It comprises the steps of: (a) introducing a layer of indium or indium alloy between opposing surfaces of the glass pieces; and (b) heating the indium or indium alloy layers and the glass pieces, preferably under vacuum, to a temperature, generally around or below 220° C., to melt the layers to form the seal between the pieces. The method is suitable to form a relatively small air-type seal between two glass panes or sheets, and is particularly suitable for the formation of evacuated double glazing units. Optionally, an additional metal layer is located between the indium or indium alloy layers.
REFERENCES:
patent: 4070749 (1978-01-01), Misono et al.
patent: 4710673 (1987-12-01), Vrijssen
patent: 4886996 (1989-12-01), Field et al.
patent: 5279851 (1994-01-01), Minosou et al.
patent: 0287139 (1988-10-01), None
Griffiths et al., “Fabrication of evacuated glazing at low temperature,”Solar Energy63:243-249 (1998).
Eames Philip Charles
Griffiths Philip William
Hyde Trevor James
Norton Brian
Kirkpatrick & Lockhart Preston Gates & Ellis LLP
Lopez Carlos
University of Ulster
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