Patent ID: 8397538
Filing Date: 2013-03-19
Classification: C03B,C03C

Abstract:
1. An apparatus for forming a sheet of glass including a forming body ( 10 ) comprising a trough ( 12 ) and converging forming surfaces ( 16 a , 16 b ) that join at a root ( 18 ) such that molten glass ( 20 ) overflowing the trough forms multiple streams of molten glass that flow over the converging forming surfaces and combine at the root to form a glass ribbon ( 22 ), and wherein the forming body can be tilted relative to a horizontal plane, the apparatus further comprising: an upper transition member ( a lower transition member ( wherein the upper transition member and the lower transition member are separated by a gap δ less than 8 cm and wherein the gap is positioned such that a viscosity of the glass ribbon adjacent to the gap is equal to or less than 10