| 摘要 |
<p>The present invention relates to a fireproof door the purpose of which is to separate one room from the next one and to stand a particular minimal temperature for a certain period of time whereas the shape and measurements of the door remain unchanged. The door of the present invention consists of a single metal sheet installed within the perimetric door frame. Additionally, the door is reinforced by a lattice construction consisting of plurality of rectangular tray-shaped profiles arranged horizontally and gradually over each other and fixed symmetrically to a metal sheet on both sides thereof, the profiles being linked up by several vertical metal ribbons which are connected to an upper and lower door frame rails and to each tray-shaped profile. The chambers formed on both sides of the sheet between the sheet, trays and ribbons are packed with thermo-insulation.</p> |
