Formed glass sheet having controlled edge stresses

Details Formed glass sheet having controlled edge stresses Formed glass sheet having controlled edge stresses

1998-08-24

2000-01-18

Speer, Timothy

Stock material or miscellaneous articles

Surface property or characteristic of web, sheet or block

Surface modified glass

428432, B32B 17100

Patent

active

060156198

ABSTRACT:
A cooling ring assembly (20) and method for controlling stresses in a bent glass sheet G produce a strengthened bent glass sheet after the cooling is completed. The cooling ring assembly includes a cooling ring (22) that supports the glass sheet edge (24), an insulator (30) juxtaposed inboard of the cooling ring to reduce the cooling rate, and a cooler (34) for providing increased cooling to at least one localized area (36,40,58) of the glass sheet edge. The cooler (34) is preferably embodied by a pressurized air supply (42).

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