US 11,685,684 B2
Contoured glass articles and methods of making the same
Kevin Thomas Gahagan, Painted Post, NY (US); Sean Matthew Garner, Elmira, NY (US); Michael James McFarland, Corning, NY (US); and Michael John Moore, Corning, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Appl. No. 16/613,569
Filed by CORNING INCORPORATED, Corning, NY (US)
PCT Filed May 15, 2018, PCT No. PCT/US2018/032700
§ 371(c)(1), (2) Date Nov. 14, 2019,
PCT Pub. No. WO2018/213267, PCT Pub. Date Nov. 22, 2018.
Claims priority of provisional application 62/506,024, filed on May 15, 2017.
Prior Publication US 2021/0188685 A1, Jun. 24, 2021
Int. Cl. C03B 23/00 (2006.01); C03B 23/023 (2006.01)
CPC C03B 23/023 (2013.01) 17 Claims
OG exemplary drawing
 
1. A method of making a contoured glass article comprising:
cold bending a flat glass sheet having first and second opposing major surfaces, at least one region having a first thickness, and at least one region having a second thickness, to produce cold bent glass sheet having at least one bend region along a portion of the at least one region having the second thickness, wherein the cold bending occurs at a temperature that is below 200° C., wherein the first thickness is in a range from greater than 500 micrometers to 2 mm, and the second thickness is in a range from 300 micrometers to less than 500 micrometers; and
restraining the cold bent glass sheet to produce the contoured glass article by attaching a frame to one of the first and second opposing surfaces such that the frame permanently maintains the at least one bend region in the cold-bent glass sheet, wherein the bend region comprises a bend radius of from 20 mm to 500 mm.