| 摘要 |
<p>The invention relates to a covering device, consisting of a cloth (1) of supple, sheet-like material and of at least one frame (2) for stretching the sheet-like material, said frame being provided with at least one hub (9) and with rods (10) having high bending strength, said rods (10) being hingeably connected to the hub (9), in a plane perpendicular to the hub, and being hingeable relative to the hub beyond a dead center, at least a number of said rods being connected at their free ends with the sheet-like material. The covering device according to the invention is characterized by means (11) for stretching the cloth and the frame relative to each other and by adjustable means (12) for securing the stretching means.</p> |
