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US 2025/0289752 A1Published application
Fire Rated Glass Unit
AssigneeO'Keeffe's, Inc.
InventorsWilliam F O'Keefe, Sean A Ross
Life of this patent
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Abstract
An article of fire rated glass and method of producing the same prepared by selecting a sheet of clear float annealed glass of at least 19 millimeters in thickness and providing the edge of the sheet substantially free of imperfections. The glass sheet is then specially tempered at a temperature of at least 575 degrees Celsius for a period of at least 750 seconds, followed by a cooling step.
Claims21
A method of providing a fire rated glass unit, comprising the steps of:
- providing a sheet of clear float annealed glass;
- treating the edges of the sheet of clear float annealed glass to remove surface imperfections;
- heat treating the sheet of clear float annealed glass to become a heat treated glass unit;
- certifying said heat treated glass unit to be a fire rated glass unit according to a national standard;
- and
- certifying said fire rated glass unit to withstand an impact test required of a national standard without breaking.
3 more elements
A method of providing a fire rated glass unit, comprising the steps of:
- providing a sheet of clear float annealed glass;
- treating sheet of clear float annealed glass such that said sheet of clear float annealed glass has edges substantially free of imperfections;
- heat treating the sheet of clear float annealed glass by heating said sheet of clear float annealed glass in an oven at about between 600 and 670 degrees Celsius for about 750 to 960 seconds;
- cooling the sheet heat treated clear float to become a beat treated glass unit;
- certifying said heat treated glass unit to be a fire rated glass unit according to a national standard of the United States;
- and
- certifying said fire rated glass unit to the American National Standards Institute (ANSI) Z97.1 CAT A. and/or rated to the Consumer Product Safety Commission 16 CFR 1201 CAT II.
4 more elements
A fire rated glass unit, comprising:
- a sheet of heat treated clear float annealed glass that has had the edges of the clear float annealed glass treated to be substantially free of imperfections, wherein
- said fire rated glass unit has been certified to be a fire rated according to a national standard;
- and wherein
- said fire rated glass unit has been certified to withstand an impact of 400 ft. lbs of force without breaking.
1 more element
Dependencies are inferred from the claim text.