| 摘要 |
<p>System to lift the roof, of roof foil (5), of the with a flexible sheet covered loading space of a freight vehicle by inflating a bellows (6) having a multi layer wall. At least one of the layers is provided by an envelope into which the bellows is housed, and the bellows is separate from the envelope and is inserted into the envelope. The roof foil (5) provides part of the wall of the envelope, such that the envelope is integrated with the roof foil. The envelope is substantially sealed along its length and has an opening at one or both its longitudinal ends for insertion of the bellows (6).</p> |
