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:
Aug. 14, 1979
Filed:
May. 22, 1978
Applicant:
Inventor:
Gunther Ortmanns, Aachen, DE;
Assignee:
Saint-Gobain Industries, Neuilly-sur-Seine, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04C / ; E04B / ;
U.S. Cl.
CPC ...
52232 ; 52573 ; 52308 ; 52764 ; 52476 ;
Abstract
This invention relates to a fire-proof window consisting of at least one glass sheet mounted in a frame and which permits generally uniform heating of the glass sheet when exposed to the effect of heat in a fire thus preventing breakage due to the buildup of stresses. Uniform heating is produced by the inclusion of a listel along the edge of the glass which is moved away from the glass by means of a member disposed between the listel and glass. This member expands in volume under the effect of heat to push the listel away from the glass sheet.