Glass tube element with improved quality

US11613489B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Volker Trinks · Mitterteich, DE
• André Witzmann · Waldershof, DE

Key dates

• Filing date: Apr 2, 2021
• Grant date: Mar 28, 2023
• Expiry date: Sep 16, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C21/002
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A glass tube element is provided that includes hollow cylindrical section that has a shell enclosing a lumen and a path extending on a surface of the shell facing away from the lumen. The path extends across a first area of the shell where the stress values are within a first interval. The path also extends across a second area of the shell where the stress values are within a second interval.