Abstract:
Thermally insulating and transparent laminated glass consisting of at least two superimposed sheets of glass with an interlayer of a solid aqueous alkali metal silicate between each two sheets of glass.
Abstract:
A FIRE-RESISTING DOOR HAVING STIFFENING MEMBERS INSIDE A DOOR FRAME. BOTH THE FRAME AND THE STIFFENING MEMBERS ARE COVERED WITH AN INSULATING LAYER AND A METALLIC OUTER LAYER, THE LAYERS BEING JOINED IN SUCH A WAY THAT THE UNION IS DESTROYED BY THE ACTION OF HEAT.