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:
Apr. 11, 2017
Filed:
Jul. 27, 2015
Applicant:
Glaston Finland Oy, Tampere, FI;
Inventors:
Assignee:
GLASTON FINLAND OY, Tampere, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 27/02 (2006.01); C03B 35/24 (2006.01); C03B 27/012 (2006.01); C03B 35/16 (2006.01);
U.S. Cl.
CPC ...
C03B 27/012 (2013.01); C03B 35/16 (2013.01); C03B 35/24 (2013.01);
Abstract
The invention relates to a method of heating a glass sheet for tempering. It comprises conveying the glass sheet on top of rollers in a roller-hearth furnace, heating the glass sheet in the roller-hearth furnace to a transfer temperature at which the glass sheet is transferred into an air support furnace. The glass sheet, while resting on an air cushion, is carried on an air support table and the glass sheet is heated in the air support furnace to a tempering temperature. The transfer temperature is not lower than 620° C. and not higher than 675° C. and the tempering temperature is not lower than 650° C. and not higher than 720° C.