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:
Dec. 04, 1984
Filed:
Apr. 15, 1982
Applicant:
Inventor:
Marcel De Boel, Chatelet, BE;
Assignee:
Glaverbel, Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
52232 ; 52789 ; 428 34 ;
Abstract
Fire screening glazing panels comprise at least one layer 2, 6 of intumescent material such as hydrated sodium silicate sandwiched between flat vitreous sheets 1, 3, 7. To promote fire resistance in a simple and economical way, at least one (and preferably only one) vitreous sheet 1 has a thickness of 6 mm or more, preferably from 7 to 10 mm. The or each other vitreous sheet 3, 7 has a preferred thickness range of 2.5 to 4 mm. The thicker sheet 1 is best located in the interior of a panel with three or more vitreous sheets and it or any other vitreous sheet may be made of boro-silicate or other low expansion or high softening point vitreous material.