US 11,053,153 B2
Forming bodies for forming continuous glass ribbons and glass forming apparatuses comprising the same
Olus Naili Boratav, Ithaca, NY (US); Timothy L Lansberry, Watkins Glen, NY (US); and Steven Michael Milillo, State College, PA (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Appl. No. 16/90,413
Filed by Corning Incorporated, Corning, NY (US)
PCT Filed Apr. 5, 2017, PCT No. PCT/US2017/026145
§ 371(c)(1), (2) Date Oct. 1, 2018,
PCT Pub. No. WO2017/176883, PCT Pub. Date Oct. 12, 2017.
Claims priority of provisional application 62/319,419, filed on Apr. 7, 2016.
Claims priority of provisional application 62/376,994, filed on Aug. 19, 2016.
Prior Publication US 2019/0119139 A1, Apr. 25, 2019
Int. Cl. C03B 17/06 (2006.01)
CPC C03B 17/064 (2013.01) [C03B 2201/40 (2013.01); Y02P 40/57 (2015.11)] 20 Claims
OG exemplary drawing
 
1. A forming body of a glass forming apparatus comprising:
an upper portion;
a first forming surface and a second forming surface extending from the upper portion, the first forming surface and the second forming surface converging at a bottom edge of the forming body; and
a trough for receiving molten glass positioned in the upper portion of the forming body, the trough defined by a first weir, a second weir opposite from and spaced apart from the first weir, and a base extending between the first weir and the second weir, wherein:
at least a portion of a vertical surface of the first weir curves inward toward a centerline of the trough;
at least a portion of a vertical surface of the second weir curves inward toward the centerline of the trough; and
the vertical surfaces of the first and second weirs extend from tops of the first and second weirs, respectively, to the base.