| 摘要 |
<p>An interior rack comprising superposed horizontal shelves (2) supported by vertical uprights (1) forming underframes. Each of these uprights comprises a metallic tube (3) and two screw jacks (4) mounted respectively in opposite directions on the two ends of this tube, each jack itself comprising a threaded rod whose external diameter is only slightly less than the internal diameter of the tube. The rod is inserted into the tube over a considerable length, a nut screwed onto this rod bears axially against the corresponding end section of the tube and a pressure-distributing end-fitting is attached over the end of the threaded rod, exterior to the tube. <IMAGE></p> |
