| 摘要 |
<p>Hinges between panels of an overhead door for an opening of industrial premises are defined by configurations (6, 7, 14) which form integral parts of the panel edges, if desired in conjunction with inserted auxiliary members (15). The panel edges may be defined by rigid aluminium extrusions (1,2) and these may have parallel slots to receive and retain panel facing sheets (18,19). Thermally insulating material (21) may be packed between the facing sheets.</p> |
