The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 1979
Filed:
Dec. 01, 1975
Walther E Hentzelt, Witten-Annen, DE;
Hans-Henning Nolte, Gelsenkirchen, DE;
Wolf von Reis, Gelsenkirchen, DE;
BFG Glassgroup, Paris, FR;
Abstract
A fire-screening panel is provided that maintains its effectiveness in preventing fire propagation even after aging of the panel. The panel comprises a first structural ply formed from a vitreous sheet, and a second structural ply, with a layer of intumescent material disposed therebetween. Other plies may also be provided, and the plies are clamped together in face-to-face relationship, and/or bonded together. At least one ply of the panel has an infra-red reflecting coating disposed thereon, remote from the intumescent material, which coating provides for the retained effectiveness of the fire-propagating properties of the panel despite aging thereof.