Fire-proof window

US4178728A · kind A · utility

Assignee

• Saint-Gobain Industries · FR

Inventors

• Gunther Ortmanns · Aachen, DE
• Franz Kraemling · Aachen, DE
• Siegfried Pikhard · Roetgen, DE

Key dates

• Filing date: Dec 5, 1977
• Grant date: Dec 18, 1979
• Expiry date: Dec 5, 1997

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E06B3/305
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

This invention relates to a highly effective fire-proof window consisting of at least one glass sheet mounted in a frame, the frame being such that when the glass sheet is exposed to the effect of heat in a fire, it will be subjected to a somewhat uniform heat effect thus preventing breakage due to the buildup of stresses. Uniform heating is produced by the inclusion of a covering along the edge of the glass which falls away upon heating of the window.