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US 5,855,638 AGranted
Process for producing a vacuum in an insulating glazing
AssigneeSaint-Gobain Vitrage
InventorYves Demars
Life of this patent
Estimating the term…
Abstract
A process for producing a vacuum in an insulating glazing composed of two glass sheets (2, 3) separated by pins (4). According to the invention, one of the glass sheets includes a hole (12) which is plugged by a softened ball after the vacuum has been achieved. The invention also relates to an insulating glazing whose glass sheets are separated by pins (4) and joined at their periphery by a sealing joint.
Claims7
A process for producing a vacuum between two glass sheets of an insulating glazing, one of these glass sheets having a hole drilled in its thickness, comprising:
- placing a ball at an external end of the hole;
- forming a vacuum between the glass sheets;
- softening the ball to seal the glass sheet by plugging said hole;
- and raising a temperature of the glass sheet to that of a softening temperature of the ball simultaneously with softening of said ball.
1 more element
Dependencies are inferred from the claim text.