Patent ID: 6103015
Filing Date: 2000-08-15
Classification: C03C,C23C

Abstract:
An apparatus for coating a surface of a sheet of glass by deposition of a coating material on the surface as the sheet is conveyed past the apparatus, comprising:a supply line for supplying a gaseous precursor mixture;a chamber having an inlet connected to said supply line and an outlet adapted to be positioned adjacent a surface of a sheet of glass to be coated;an upstream exhaust tower including a passageway for exhausting unreacted portions of the gaseous precursor mixture and an upstream exhaust toe positioned a specific height above the glass surface, said upstream exhaust toe being disposed upstream of said passageway;a downstream exhaust tower including a passageway for exhausting unreacted portions of the gaseous precursor mixture and a downstream exhaust toe downstream from said passageway in said downstream exhaust tower, said downstream exhaust toe being positioned a specific height above the glass surface which is greater than the height at which said upstream exhaust toe is positioned; anda first surface extending from the outlet of said chamber toward the upstream tower and a second surface extending from the outlet of said chamber toward the downstream tower, the first surface and the second surface being disposed substantially equal distances from the glass surface, and wherein the distance between the outlet of said chamber and the passageway in said upstream exhaust tower is approximately equal to the distance between the outlet of said chamber and the passageway in said downstream exhaust.