US 11,981,593 B2
Glass tube
Thomas Lenz, Mainz (DE); Andreas Langsdorf, Ingelheim (DE); Fabian Etzold, Ginsheim-Gustavsburg (DE); Christoph Gross, Frankfurt am Main (DE); Ulrich Lange, Mainz (DE); Markus Ollig, Weiden (DE); Arne Riecke, Waldsassen (DE); and Wolfgang Wallat, Klein-Winternheim (DE)
Assigned to Schott AG, Mainz (DE)
Filed by Schott AG, Mainz (DE)
Filed on May 6, 2021, as Appl. No. 17/313,624.
Claims priority of application No. 20173251 (EP), filed on May 6, 2020.
Prior Publication US 2021/0347670 A1, Nov. 11, 2021
Int. Cl. C03B 17/04 (2006.01); A61J 1/06 (2006.01); A61J 1/14 (2023.01); C03C 3/087 (2006.01); C03C 3/091 (2006.01)
CPC C03B 17/04 (2013.01) [A61J 1/065 (2013.01); A61J 1/1468 (2015.05); C03C 3/087 (2013.01); C03C 3/091 (2013.01)] 18 Claims
OG exemplary drawing
 
1. At least one glass tube comprising a glass and having a relative cross-sectional area deviation defined as

OG Complex Work Unit Math
x+t, wherein QFmax is a highest cross-sectional area and QFmin is a lowest cross-sectional area of at least two cross-sections of the at least one glass tube, wherein the at least two cross-sections are spaced apart from each other along a length of the at least one glass tube, and wherein k is 0.0023 m−1, t is less than 0.15 mm2/m and x is

OG Complex Work Unit Math
wherein a distance between the at least two cross-sections is at least 0.5 m in a direction of a longitudinal axis of the at least one glass tube.