| 摘要 |
In these devices, the sections are connected via hinges, the pin of which serves for mounting a roller engaging into a guide profile. So that a retention of the closure can be brought about under these preconditions, as a result of the invention one or more hinge pins are mounted so as to be axially displaceable, and moreover these pins are designed as retaining pins. Expediently, at the same time, the hinge pins can be retained in two positions.
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