| 摘要 |
<p>Connecting element forming a shaped bar, in windows, doors, wall facings etc is made of material with a low heat conductivity coefficient. It is made up from an upper part (3) and a lower part (2), both fitted with hook-shaped pieces (6-9) to engage behind ribs (13-16) on interfacing sides of the shaped pieces (10-11). They are connectable by means of one or more bolts (5). The upper part may be U-sectioned, with one or more bolt holes (22), while the lower part has a stem (17) with bolt hole, and shanks (20, 21) with protrusions forming the hooked pieces. The bolt may incorporate annular grooves (24), with flanks at an angle to its longitudinal axis. The diameter of the hole in the stem may be smaller than that of the bolt.</p> |
