| 摘要 |
An installation for closing and opening apertures in vehicles, such as openings for sliding roofs, in which a chamber adjustable in its height and its volume and adapted to be connected with a vacuum source is formed between an outer covering and a support part; the sidewalls of the chamber are formed by sectional members of approximately X-shaped cross section with four leg portions which extend elastically along the adjacent top and bottom walls of the chamber.
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